A lot like porcelain.

The person.

Or electronics is a little thank you.

Thank you thank.

God it was here.

Thank you very much for the invitation I
think the first time I came to Atlanta I

was for the C.S. meeting ninety two
ninety three maybe ninety four I came to.

The F.B.I. meeting I was invited to
Georgia Tech maybe ten years ago it's

really a pleasure it's always growing here
so already I want to come as the city and

I would like to share with you our son to
work on new polarization Meadows for and

new partners also for what we call plastic
electronics I don't want to make a long

introduction of classic electronics here.

I thought that we had a nice campus but
nothing to compare it with here I

mean it's really impressive We don't have
we don't need a trolley to travel within

the campus it's here it's mid
October It's what we call

Indian fall and it's a really lovely
time if you want to come to Quebec City

this is a sense Lawrence River
here Francis on the east and

Atlanta south here and no office
there is almost nothing and space and

lakes rapidly so I did my Ph D.

on conjugated polymers with Michelle
fountain in France and proof.

And so I started in this film
more than thirty years ago now.

While I live with these
materials is the fact that

there are combination of very into.

Improper days so if you are just
looking for a good conductor or a good

semiconductors or counter the parmesan not
the best material if you are just looking

for a dire chroma for four in the optical
application they are not the best Diavolo

bill on the market if you're looking for
partnering materials they are not

the best materials in terms of mechanical
drive days process ability stability but

what is really unique is the combination
of all those probabilities within the same

product of the same material and
that could create new opportunities.

And what we call now the plastic
electronics are called the optical and

photonic electronic application so
plastic electronics could mean.

Light emitting diodes or

LEDs peel LEDs feel effect transistor I
would spend a little time on plastic for

the overall tax plastic saw ourselves at
the time when we worked with Conoco for

instance and still we're still working
with talent here so we try to make

network center i like you're doing here
and we're having mine last year but

it didn't work what we call the ten
ten ten charges for cells and

ten ten ten means ten
cents per kilowatt or.

Knowing that in Quebec it's six seven
cents is the worst place on earth

to to produce electricity with
cell I mean I do it interest is so

cheap it's renewable so
quick it's the worst place but

at least we can bring in new
technology and export it so ten cents

ten per cent of efficiencies
in ten years of life time.

And I would say the efficiency
is perhaps the easiest part.

In ten years of life time and
tense and it's still a challenge

it's still a shot is because we were not
supported so it's still a challenge to

just to make research on this and
one the way to break down the cost of.

This editor is the is using new new
processing techniques like the road to

roll processing and that could be
a key advantage of what we call

plastic electronics rapidly
if you want to make plastics

there are different approaches about what
we prefer it's what we call the bucket or

junction so it's just a mixture of P.
types and the conductor and types and

you can doctor if you want to start in the
field recommend to start with P three H.T.

blend it with figurines
in a given solvent and

by chance you will get
the right morphology so

you need the right morphology to have
energy transfer and charge transport and

just by blending it works sometimes it
could be quite efficient if you have

the right morphology and then if not you
can you have to spend a lot of time to

put additive Chan champers solvent and
so on so although you can

make the best material for this kind of
application you it's hard to predict them

off ology of the finer structure is the
same for FEEL effect transistors if they

don't have the right orientation you
won't get the mobility in the right

direction so
if you look at this literature.

Up to now roughly up to now yet

as their war record on small
molecules it's tandems.

I think it's still.

Upon the sublimation So
it's not mean a wet coating

Kanaka before the bankrupt they
had a certified value of one

person you see it is Salama for
tend to run ten point four

point six roughly year out to the best
mine owners have thirty five values of

one point two I'm not aware if it's
made from polymers or small molecules

all the dormers I don't know the details
and it's a vicious on porphyrin you.

Probably aware of that could get
ten eleven even up to twelve person

with it was materials we
don't know that much.

If you look in the open literature
where you have all the tastes and

in principle you should be able
to repeat those experiments.

This is that this is the so-called P.T.B.
servant developed by looping you at

Chicago that's one of the best materials
in the field recently we have values over

than ten close to eleven person with
this kind of material here I would spend

some time in this court in this
presentation on or work on P.C. the T.V.

It is a car was all there it is I was so
I was also talk about this C.P.D.

copartners here John did work on that
are still working on that probably and

I would just what I want to show today
it's how chemists design new molecules

are we think how we want to make the right
materials for the right applications and

terms of represents ability costs.

Ease of processing and keep it simple you
have to simplify the centers of source

that's that's another point so one trick
which is very very useful in the field and

many people are using it is
the so-called push for core polymers

I prefer the push pull approach seen that
done acceptable polymers because when you

blend it with an accept on the which is
the Accept who is which is the diner so

the push pull approach so
where you mix of turn eight and then

thrown rich unit with a neutron poor unit
it could be large Ben gap monomers but

at the end the I'll turn a thing called
quantum A with have a low vent gap.

And it's not tall it through and
through attrition will tell me it's not

it's not it's not true at all but
let's say that the almost level.

The final alternating
copartner is determine of pin

by the OEM a level of the electron rich
unit and the loom or level is more or

less related to the loom or level of
the poor unit so knowing your monomers and

knowing your your your building
bricks Let's say you may have

a sort of sense I want a prediction but
a sense of where you're going and

what could be the bandgap when you cope
on the rise these two call monomers OK so

that's very very useful especially for

the over the occasional where you
want to have low band gap materials.

Are keys to the band gap
at different wavelengths So

our produce started in directly
we were working on blue light

emitting diodes and three is one.

Material you can use and put cobbles all
the things on paper could also be useful.

And add a graduate student
who came to me and

that is I.D.E.'s said I would like
to make original contribution.

I read the literature I think
it could be a good topic.

And I told him good but nobody or

nobody was able to make such call
polymers at the two seven position so

good luck and come back in two
weeks if you find a solution.

And.

It's a good source of motivation if
you tell a student you want to work or

you don't believe in that or
her it's a good source of material and

they found in a textbook for
a seven year undergrad organic.

Course.

This ring closure reaction it's
called Rain closure reaction and

the point of causality were so

difficult to prepare before this war is
the fact that if you start with cobbles.

As the starting material.

The two seven position are not
reactive you have to block all three

six one eight position to activate
the two seven position and

the answer is very simple don't start from
Kabul's all but start from a by feel unit.

Therefore you will activate the one
what we call the one for prime position.

Ring closure and then you have exactly
your activation are you have I would say

substituted the colors of the right
position so we have a pattern on that.

And that's the idea of.

A.
Graduate student within the first two

weeks so it's a shame on us I mean because
we have thought about this polymers and

we kept our focus on cobbles all and so

things are differently and

you may have a good story so
I'm always repeating this story

because I think there is a lot
of lessons buried behind that.

So we're we're we're with time so

chlorinated monomer are not
the best monomer and

class you learn and grins there at the
time they started from this commercially

available Di Bromo here you have
the night ration here rain closure and

then you get the right call monomer we
put linear all sites in there were not so

solid gold process of a monarch really
was quite low it took another Ph D.

student to find the right side chain so
these branch so

it reminds it reminds us like
the fury in substitution So

the sergeant are going
strip straight this way and

you mate prepared to die bro moderate
is our Deborah Nick caster here and

with these starting
blocks you can make out.

OK you can make your mom
with a cup plain sit.

Coupling and Suzuki Cup.

And so on other Ph D.
students so prepare this monomer here and

make Opara really if we follow the work
from Anderson and in Ghana and

Sweden and party through our brains and
we just I mean mimic what they've done

with your reins and we just adapted.

Our strategy with the cars out here so

by changing the electron with rowing
I was saying if efficiency that's a.

Monomer here you can't zoom the bandgap
the loom or more level and and so

on you need these tires feen
units here to keep it call planar

So if you put two feet in a group next
to each other you would get twisted and

it's not clear you would get
a flat conjugated bag-O.

So these tire fins units
here to make is to keep

the Copeland narrative of the pattern and
so

prepare cobbles Well if you make
the almost part of the band gap

will give you is about three even
if you copal arise cobbles out with

different electron poor unit you
consume the Ben gap down to one

point one even lower now OK So really you
can make the color you want you can fix

the bandgap you can fix the Lumo there are
more lever for most partners here though

more level is around minus five point
eight because it's made from Kabul and

they can move from I don't know from
minus five down to minus three point six.

Accordingly Here's.

The problem with chemists if
you don't tell them stop and

check what are the properties
they will just make molecules and

with different colors different molecule
weights and frankly they are just one good

polymer in this series for the world hey
complication but it took a while to five.

Which one.

And it was this what we
call sorry the P.C.T.

T V This one here with
the cobbles all side chain tire

feeling this unit here with
a good molecular weight so

clearly the molecule weight is a keeper
I mean in this field we were not such so

sure at that time and we camper we
compare molecules with different ways and

that bit better or worse probably race and
probably was just related to

the fact that we will not get
the right medical way to arrange.

And another long we're not well equipped.

I even don't have a glove box so
I have to make estable materials and

we'll sell ourselves because I don't have
regular access to a glove box I was.

With Alan here and Kanaka that time
wrapped in the P.C. the T.B.D.

was the first parliament to give
a value around six person so

most of the results at that time two
thousand and eight two thousand and

nine was the best result we're
always obtain with few reasons and

there was no new player in the field and
it was the one he example I

think of a part in our design for
sauce elocution and that could be compared

with the key feature with this class of
materials the fact that since the all

more level is quite low the open service
vault age is about twenty eight point nine

compared to point six with between OK The
Ben gap is around one point nine even so

it's comparable to be to reach T. but
frankly we got some good gains here from

the open circle validation we got up to
six percent of the time with what we call

internal quantum efficiency
close to one hundred person.

And we're processing physics device so

we keep the material always
the same it's possible.

It's quite easy now to get seven person up
to seven point nine So if you buy a sample

of P C D T V D You will get roughly around
six seven person it's quite stable and

quite reproducible what we know we won't
get ten person with this material we know

we're after on the rivers of studies
we know exactly what we can get and

what we cannot get where we
are happy with this material so

I told you a deal more
level is quite low so.

McGee had stand for with our sample
emails are a true accelerating.

Time Research a lifetime around seven
seven years which is among the most stable

within a working device and recently in
nature communication if you read carefully

the paper you may find results that
could tell you that the ten years

lifetime is feasible with P.C. D.V.D.
I'm not saying that we should make so

also with this material I'm just saying
that organic materials in general

can survives in some
cases seven ten years.

We without any special encapsulation
nothing really so fence in terms of

packaging.

You know I thought works so yeah six seven
person but if you read the literature and

your competitor or your colleague
depends on you call them are.

Reports of an eight person so.

Why not wide enough to us so
we look at this P T V seven and

we found it very I mean it's
a remarkable well done everything is.

Well thought and well done we
were pleased by these big coal

monomer it's quite easy to make scalable
quite stable we thought that it could.

It is quite complicated it's not symmetry
it's not simple I think you need seven

to ten steps to make just this call
Manama So if you're looking for

low cost electricity for account power
which is already quite expensive.

It's not the perfect the so
we are clearly inspired by this work and

we work on B.D.D. with it a tie in with
electron we draw in such substitution.

Symmetry no big stricken rence and

just have a look.

So.

That's what we've done in about five
five years ago now so this is known

you need to interest this retire if in
most of the time Susan it's not so.

It's not working properly
it's somehow unstable and

most of the time people will rely on stick
up in for typhoon typhoon coupling and

with this T.P.D.
you have a sort of ring closure here and

you activate with the Bromo here in few
steps you get the right partner with

the market always around twenty
thousand thirty thousand

number of rich molecular
weight it's not so solid bill.

But rapid they were got five point five
six person and we had to get our at

the National Research Council in Ottawa
you can get on the surface a once in

a square about seven person and.

Recently McGee fresh air show
that if you soon decide.

That will not change the optical
properties it won't change electronic

probably even not the molecule or
weight but really clearly that

the morphology is different depending
upon the nature of the side it's hot.

To predict a thing you observe you then
you can find reasons why it's better but

it's hard to predict frankly the what what
is called the side change in arena I think

it's not that clear in my point of view so
if you move from CA to see seven

you move from five point five six seven
percent to up to eight point five.

If you put a C. fourteen here you have.

Four person so you have to assume the site
change I would change morphology to buy

when you then it will with P.C. V.M. and
you can get improved properties the good

news is that so the good news is we
can improve the efficiency by changing

the site change the bad news is
a lot of time it's time consuming

hard to predict and perhaps you
don't get the up to month reach or

because the company is quite.

I put this lie saying that if you slightly
change a call monomer you toward a bend

gap and it was possible to get
up to seven point three percent.

It's just to introduce this slide

that shows that if you move from this this
polymers prepare from steady coupling

if you move from ten thousand number of
years want to wait measured by bit G.P.C.

although we know it's it's
not the real number but OK.

If you move from ten twenty to thirty
you move from three five seven and

same open circuit voltage the same field
factor really the photo current is

completely different so the end groups or
the morphology is strongly

depending upon the molecule weight and.

If you want to improve and there are many
examples in the literature showing that

increase in the model who are to some
extend you will increase the mobility

in the photo current and particularly.

This.
Kind of corp armors based on T.P.D.

is also could be also interesting for FEEL
effect transistor this is a work from Marx

and K.T. where they showed that
the mobility is around twenty one but but

the point is it's quite rare stable
Typhon Here is an electron poor

unit based on typhoon so though more level
is quite low and it's it's quite stable so

it's quite stable for sauce
allegation it's also quite stable for

FEEL effect transistors.

Once again changing the side chain and

how to predict frankly if you look at
these tree structure and give us for

an exam tell me what what is the best
strap structure for home ability.

You can get the answer you cannot get
a rational answer for that question so

depending on the pond the side chain here
it's possible to get mobility up to one

with this class of material by finding the
right call Mom That's the main point here.

Yeah so we were in the we're not alone and

John also in his working on
this unit here with the German.

Germ all derivatives Let's say we became
more and more interested with this D.V.D.

called monomer here and
we wanted to simplify the census and

also to lower the cost so
we first started with the monomer.

And from Aldrich if you want
to make this call monomer here

from Aldrich you can start from tire.

Trouble more triumphing
three four feet in science.

This is seven dollars a gram.

From from here.

So it's not a cheap sorry material if it's
commercially available it's just seven

dollars a gram so it's seven thousand
dollars a kilo for study material.

Then you make your enclosure here and
you get the right.

Pre-modern monomer So
we wanted to simplify and

we discovered by accident and once again
that there is a reaction starting from

molecular sulfur and molecular SOL for is.

Clearly cheap but it's not useful
I mean compound in chemistry and

it's gullet gay Wald reaction
in the one step Don't

ask me the McCann isn't I'm not
sure the can is and is known but

it's reproducible and
scalable in one step you get this

ring closure here you make the D.M.
initial reaction.

In few steps you get the right
call monomer based on T.V..

So it's so simple that even
this men here are this man

can make it quite easily and
you can make the scale up of this man so

that's one point to decrease the costs
of four preparing the monomer But

the key point is really to find better
position to make better materials

cleaner materials cheaper materials and
leads use I would say the number of steps

and there is a research center
now in the States on C.H.

It's called C H activation C H.

OK.

One of the precursor in this
field was the late kids

knew from the Eurostar about
how on he died up forty five.

From the virus.

And within one week forty five years old.

And.

Three or four years ago so even reported
this amazing real reaction I think for me.

Where you have a C.-H.
activation and you can.

From a C.B.R. ban on the bends
in the benzene derivatives

with the heel of it is it a seven
person this discussion here so

there is no sense of coupling those
to the copying is based on Kallis but

Paladin as it is not so
fancy it's not a so complicated reaction.

It doesn't mean if you have
a reaction that works for

small molecules that it could be useful
for problems action reaction if you have

a follow if you follow the polymer course
and you know the car authors equation

you know you need a yield of ninety eight
ninety nine person for four condensation

to achieve true weight you need the
perfect selectivity because if you create

the effects of with the cop things
you cannot remove the defects from

from crystallization the defects will be
involved in bedded within the problem Rick

structure you cannot remove them so
you need high yields quite and

the almost perfect selectivity
of the company and.

This is I.

Think.

The.

Important paper in this
starting field from.

Two thousand and ten among all
brominated Typhon there it is so

it's the precursor of Petri H.T.
with Ehrman Callista's pet idea

there are it's B D two plus.

Cesium carbonate th If so
you need the pressure it's upon pressure

with th F. you get a number of
Richmond where the thirty thousand and

a regional Riviera T.F.
ninety eight person so

it's comparable to the beach and
you can prepare from Green For

instance I'm not saying it's a living
proposition but you can insulation here.

Touch with and

we check carefully the N.M.R. and it's
even better than ninety eight percent.

It.

Is almost perfect I would
tell you why because this is

the at two point six P.P.M.
you have the C H two and

I didn't like pose duck on that
topic I know that quite well

you can see defects of about between what
we call the head to tail company and

the head to head coupling OK And the
difference is between two point eight and

two point six ppm in the NE mom but
be careful because

the end groups here are different
from other center the census.

And believe me the H.

here as the ng groups will
give you a distributes here.

In the end groups here with
the biasa to see it next to

the B R R the head to head with
happier here at the same place

if you calculate from in a mile the number
originally through word of thirty thousand

you will calculate that it's almost
ninety nine plus plus regional regular

If you check carefully by the CID the
crystal didn't in the melting temperature

it's really better even better than
the pizza reaching of the a person so

it's a well well defined had to
take up playing selectivity and

there is no trace trace of branching.

So it's very very selective much it's
much better than anticipated and

even I was I was if you was
here would tell you that

it published in two thousand and twelve
another paper showing that the N.M.R.

worry even better than
what the first reported.

Second paper in the field two thousand and

seven it's a direct correlation
between figurines and

a quite acidic sage bombs so
they are not just for fun.

This for a few are here how
to activate those see it's

bound to make them reactive enough to
make I would say cross coupling and

it's a well defined Parmar party florins
I don't see any obvious suffocation for

this polymer but it's quite impressive
because the coupling is between C.B.R.

bone on your reins and the C.H.P..

When seen that say with Gemma said it
within within one hour and the number

Ridge microwaves around thirty thousand
which is I would say at the equator.

Then another student came to me said
Have you seen the it was those papers

we should try to apply it to our T.P.D.
called monomer because the T.P.D.

monomer is a perfect monomer for C.H.

activation because you just have to say
just bounce exactly where you want so

that's the perfect model and then you
have to make a cope on immersed so

we started with the byte I feel here it's
quite easy to make the die Bromo And

that's typically our we make this cope on
him or hear from from fact Katie marks our

lab in the you have to make the stand
interest is here and you made a silly

coupling and they are not so stable they
don't survive involved in Tallinn for

a long time and you may get a number of
original who were wrong ten thousand OK

it's not only OS This is what is
reported in the literature and

my students say OK I think
the direct relation could be Apply

think I can make a perfect alternating or
bottom or and I remember I told him

I don't believe that it won't be
selective enough not reactive enough

come back when it's done it didn't take
two weeks it took several several months.

I was anxious about these C.H.
won't hear frankly you have C.H.

bone here at the better position and
it's not clear to me.

You want to get a sort of branching or
homework you can call it come a copy so

you got this polymer and not only got
this part of my with a number of rich

Michael with a fifty five thousand.

Then I said OK pressure got a polymer
doesn't mean you get the right partner so

you have to run an M R and compare
the N.M.R. spectra So this is the N.M.R.

spectral you get from city coupling and
this is the N.M.R.

spectrum you get from Derek
a relation totally comparable if

you see these extra little peaks here it's
related to what we call the end group so

we have a low or weight with City
copping and you see the in groups.

And you barely see the in groups with
the art so it's not perfect I'm just

saying it's comparable to what
you get from city copying.

Without And it isn't so there is no
product by products it's quite clean.

So.

If you publish an unvented they ask
you for something spherical and

I wanted to make a sort of Kenedy and.

Origin of it and we try with ice hockey
we didn't find anything spherical with

ice hockey so clearly it's not
very I won't say it's popular but.

If you watch the Olympic Games.

Canada with win most of the time would
win the gold medal men and women and

I would tell you why because no
other countries are curling so

it's tougher to be the Canadian I would
say champion to go to the Olympics then

winning the old gold medal so but nobody's
watching it usually you see it at midnight

after hours if you have a hockey game at
the same time there is no comparison so

I think in some cases in some cases in
few cases we had higher market or wait.

I think it's I would call it not
green chemistry but eco friendly.

You reduce the number of steps and
if you reduce the number of steps and

production on a toxic byproduct it
should be low cost or lower cost and.

So then we try to apply to duck out of
coal monomers start with this one I would

tell you we not just problems and natural
we get with this diagram what I think

the right partner I don't think it works I
would tell you later why doesn't work but

in this case with the bite I feel I told
you it was quite well would just change

aside chain to increase the molecule
weight here in the sole building but

it is first index for pretty
condensation has to be around two so

don't look for one for Polygon and
station if you follow corridors

equation it has to be around two.

And that's more or less the same
polymer we've done previously

we run in a mass spectrum and
spectrum follows upon a most and

frankly I'm not saying it's perfect
I'm just saying it's well defined and

you see the peaks where
you should see them for.

And then an attorney thing called bottom.

So we were quite pleased as
chemists of the sentences

of such conjugated polymers from
a such a simple reaction OK so

we send this polymer to and he got here.

U.C.S.B. and
with a six percent efficiency was

please about not that much it's
just barely comparative But

this it shows that we prepare a partner
of from CA It's articulation and

you can get a chief I would
see probably days in a device

comparable to what you would get from
city cop to your Suzuki company so.

I was just happy to see that
it's processor ball and

give you I would say interesting
results for saw ourselves for instance.

Could be applied to
different color monomers.

We follow carefully the work on eyes
who Indigo so with T.P.D. by T.B.D.

either it's quite well defined but
you see we always

use the electron pore unit with
limited amount of C H One So

T.P. the and by T.V.
We were not sure that we could

try with typhoon or bite out of inference.

So.

I.
Want to spend too much time but

what you get from Susan Regarding is
more or less the same I was in the same

problem there is that you get with
this age their calculation and

the number originally who were it's
comparable to what you get from

what I call traditional
forms Asian reaction.

Problems.

So this is the work from Canberra
in two thousand twelfth if so

and we were convinced that.

If you started with Di Bruno
typhoon the theory story and by.

If you repeat these experiments you
will get insolvable materials and

the reason for
this insolubility is cross-linking.

And he said you have better copy
in here and then branching and

branching will become cross-linking and
then you get an insoluble polymer

if you made model compounds here showing
that traces of branching could be

enough to make cross thinking and
really to.

Make the point even prepare
this coal monomer here with

fully middle aged bite if you need it and
you've got the process of a.

All solvable but twisted none
cross-link well defined copartner So

I think it was quite convincing that
branching and cross thinking would occur

with with bite if in but
if you block this extra opposition you

can get something which is well defined.

And I have a student would
just repeat it just to see and

follow carefully the kinetics in
the gust this got this studying

data here after three hours
it's fully unsolvable.

If you keep a sample or
remove a sample after

twenty minutes you get a number of
ish molecular weight of ten thousand.

And the materials for this all of them so
it goes and then it becomes

cross think that's it so there is a window
where you have a low market away but

still so little material.

And the result of those of this behavior
could be as reported here I think it's

from Thomson perhaps your review is sorry
so it's there is one missing reference and

that's that's your thing where you see
that as a function of the molecule Wait

the number of bad up wrong will increase
in compact it won't increase but

the ratio between the proton here and
the alpha up around here will increase as

the molecule is increasing so
the probability of side.

Reaction or branching will increase as
a function of the molecule and that and

this is not true for us to the Suzuki Cup
so it could be that the right answer so

what decisions have done as done you
decided to slow down the reaction.

To use a catalyst and condition whether
action is slower and try to follow.

Can it.

And that's where they go and
if you're teaching polymer chemistry

disses the characters equation it's
the increase of the molecule weight as

a function of the conversion of
the reaction so within a certain window

you may have achieved a fully solar
bill with a year of not ninety percent.

Of that's a twenty five thousand
number average medical weight

if you wait too long you have
a completely insoluble meter.

Is across thinking this is just
the fact that you're going to a too

high a microwave and then you decrease
the process ability of the fine and

polymer I don't know you also follow.

The U.V. visible of social specter So

this is the spectrum you get
from says if you coupling.

And these are the U.V. visible absorption
spectra as a function of the time.

And frankly at the end if you
use you stop the reaction

here you get something which is
comparable to Suzuki copy so

at least from the U.V. visible spectrum
there is no evidence of branching or

something going wrong in
this in this reaction.

We've done we have repeated it with
cobbles all by tell you fiend.

This is the kinetics here if you wait for
too long period of time it's all insoluble

is that because of matter who is too
high or crossing I repeat I don't know.

Souza keep.

Your views of a spectrum
as a function of time so

you will just recover exactly if you
stop the reaction in the right place.

Visible spectra spectrum
comparable to others and M.R..

And Mars not perfect but
what I can tell you is that.

What you get from Suzuki coupling for
this polymer that part.

It's comparable to what you get for
directly through a racial polarization

I don't see any difference
Indian among spectrum.

And groups of course but but
the main peaks are similar.

Cobbles although with D.P.P..

In principle two years ago I wouldn't
have tried this reaction because I would

I would have said all D.V.D.'s full of C.
age bounce and

it won't be specific so
I would say make the Suzuki coupling

therefore you will get the right
partner so we just reported.

We've done the same experiments
just want to show the M.R. So

this is then I'm up to in from Suzuki
coupling this is related to end groups

here and frankly we've got
comparable in a mile spectra.

From the record to our recent So
it's quite selective and even D.P.P.

will will link as his most of
them will link this position.

So the alpha problems are much from more
reactive compared to the better approach.

If you wait for too long period of
time you would get inside of them and

none process of a material.

We have repeated the same
experiments with the P.C. the T.B.D.

that's a polymer we know
quite well in our lab.

Comparable you have the visible absorption
spectrum comparable in amount it's not for

this so solid material so
from Suzuki It's not perfect and I would.

Just say that it's comparable so
it's full of proton here but

it seems to be quite selective.

OK if you want to make.

It's called Literature P U T twelve it's
a polymer made from Xerox for transistor.

That's another way to make it.

If you start from this for us or
from the strategy here will work.

If you.

Make the opposite so I like symmetry.

If you put the Brahma group here and
polarize on by Typhon you will get

the right partner at the same with a good
article proverb There is an M.R.I..

Whole mobility comparable if you want to
make the same Parmer from this approach so

you make the die broke.

And you want to make cutting
here it doesn't work.

You don't get a well defined polymer so

with the Typhon units depending
where you put the Bromo groups.

Is important it's not important
with the theory cobbles of filling

in the goal because the C.S. bonds are not
sore reactive my point of view but here.

If it's more tricky.

Another example is with CO
polymer from D.P.P. and D.P.P..

You can make the same part of her
from this coupling of that coupling.

If you put the C.B.R.
bone here Pew one you will get

a low medical no weight and
a lower M ability.

If you put the Bromo here next
to the middle group here and

make up thing on Sage bounce here you
would get the mobility up to one and

a number are rich microwave or
forty five so

depending on where you put your Bromo
groups it will change the reactivity

it's really true with
Typhon your nets are.

Built from the uptick zero
spectra is told a different so

this is pure one the low
molecule with material.

Well warm ability it's hard to have nice
animist Bactrim with you for the D.P.P.

so I don't have such data if you make
the opposite it's more conjugated and

mobility is better and
Marco is better so depending on upon

how you choose your manner with
the typhoon it's a problem.

So while I want to tell you.

With those conditions general
conditions so we will also looking for

conditions that could be applied for
a large number of monomers and

we don't want to make our sins Asian for

a given set of monomers that's what
we where we spend a lot of time so

a pledge I'm source P.D.U.
be the two plus.

This ligand.

Privilege as one equivalent citizen
carbonate equivalent tarring of th.

Th F. it means seal glassware with
pressure th of it could be boiling.

If you have a bromo group
on any not any but on many.

Variants carbs all eyes will
go filling you can cope and

rise with with an subsidy to
tie feen are bad are blocked

you will get a well defined polymer
comparable to what you get from Susan.

If you start with the Bromo Typhon
there it is you have to block at these

are two not at least with those condition
just about the bed up was ition here but

the selectivity would be quite good on
the on serve Caesar the typhoon unit.

There the reason why.

It comes here.

I think if you put a Bramah
group here you will

activate the sage on here
you will you will make it.

That's my explanation.

It could be more acidic here and
you can create perhaps some branching.

Ill defined coupling it was our current
here because those sage bond here are not

reactive enough in those conditions
to make side reaction so

here we have a problem at least with this
strategy here and we look we are working

on finding new Liggins new source new
tricks to make it more selective but

from the knowledge we have in the last
two years we know it's not we're

not able to get well
defined without defect.

Tired copy that's but here so
up to now I think that what

was done in the past from Suzuki copying
could be done by director of Asian.

And some see the couple part American now
and be done with this new process but

it's not still it's not yet a general.

Strategy for any combination so
I've more or

less stop I will stop here so.

For me serious a very convenient reaction
was we think it's a hammer because

you need not so easy to end
the stuff some toxic byproduct so

that's something if we can avoid it we
would prefer I've been told that the big

companies at this in Europe there are no
other allowed to scale up and the reaction

based on stick up they have to find
another way to move to scale the can and.

It's not bringing the reactor is
the byproduct which are the problem

how to get rid of the byproduct
in a safe way and convenient way.

We put a software cop interaction so
it's clearly a mistake it's a very nice

cup interaction in the course
like solution no taxi by product.

We think the H.E.P.A.
seeing the fine tuning but

with the fine tuning up to nation it
could be a very very versatile tool for

conjugated partners it could be our legal
Murs Also it's not limited to two partners

those you could be applying for
different compounds if you

want to get rid of by product metallic
by product and have clean materials for

all it's for instance I think
it could be a very good tool.

Supports comes from different ways.

You take a granted grant you take
an American grand you divide by ten and

that's the Among we receive in Canada so
we have to apply ten times to have

something competitive with one grand
here I know it's recorded but.

They know it's true.

It will pass the border
without any problem

with this of course to
thank my my students.

Photograph taken out this
summer about last summer and

with this I would like to conclude and
thank you again for

your kind visitation and I've been
listening to me thank you very much thank

you.

Source on

purpose.

What we found out we prefer
to keep the same Ligon and

vary from parent that.

It will affect the speed.

You know this window it looks funny but
it's not funny because you have to follow

carefully your reaction and
started exactly at the right spot so

in some combination the students found
that this gallery is will be less active

or more active or two to be in a scale
that could be give us enough time

to stop the reaction and have
something which is reproducible OK but

in principle if you have pledge
a mass at eight I would say.

Are the better calories which is
more stable you could make all those

polymers you would need some tuning to
find the right could be concentration

depend you see so you you you change your
concentration the Saldanha temperature to

get to have access to the right material
at the right time if you make Yamamoto

coupling I don't know if you have done
that with nickel it's so fast you get none

sellable material and you have to follow
carefully the kinetics and the loading and

so it's more or less the same OK if
the pattern as highly soluble it's

not a big deal is when you're dealing with
partners which are sort of about like P.C.

did you have ever worked with it.

If the market was too
high it's not process of.

OK so.

It has to be convenient

it's more about convenience than
saying you have to stick to this

source.

So.

Yeah.

It's always most of the time around
ninety percent on a five person.

Really what is surprising
is it becomes come.

It's not yield a zero after a while.

So it's completely insoluble I
doubt that cross thinking with.

All polymer chain you won't
be able to recover some so

my feeling just a feeling it's
a question of molecules it's so

efficient that you go to too high Michael
weight and you cannot recover it and

dissolve it after all that.

Is four to one.

It so this event page of our
system because figure is expensive

why I cannot tell you I.

Can debate the on the fact that we can
create a on the weight ratio it doesn't

take into account the weight
of a repeating unit.

I cannot give you a neck and
thence or a reason and

explanation I can tell you it's
true it's four to one all the time.

And it's not an advantage
people are looking for.

The loading of fear in their ears as their
theory is more expensive than most country

bombers why I cannot tell you.

To see even lower than
one point eight and.

Know and no explanation.

Yeah.

OK.

To all knowledge especially
with the fluorine says C.B.R.

on I ring groups that we
don't see in the carbon.

And I don't want to go
into too much detail but

now we're working on Mother compounds
where you will amplify if you have bad up

it will be amplified it will disrupt
that CD The structure Tolly.

And.

Animal don't see it.

If you make Chris's ation and melting
you see some little defects branching

can change the morphology I would say the
crystal structure it is at this level so

it's less than it's clearly
less than one person.

When you when you when it works well
I'm not saying there is zero but.

Even Studion soup.

I think we have to check again
because we have taken for

granted that Suzuki was perfect and still
us perfect if you check carefully because

we want to compare what we get from C.H..

And now with Discover defects with
those traditional forms Asian.

Macartney in particular and
sometimes wrenching So it's comparable OK

it's less than one person in
most cases it's hard to see.

I wanted to see it it's hard to see
it's hard to prove that we have the

effects.

The acuity twelve because it's symmetric
it works quite well surprising well.

In the past I work on
Exile tired feelin with.

A person head to.

Oxidative coupling.

No sorry I thought a radical NO NO.

I yeah.

That would be the dream how
do you achieve CITIC T.V.

a perfect cross coupling between
two sage bounce that's a dream.

Probably people are working on
that it has to be general but

that's the key how do you get
perfectly I'll turn aging

cross-cutting between sage
about that I would be doing.

On television with my

guests.

Yeah.

You're close to what we need.

Yes.

OK yeah.

Yeah

that's.

Right.

Thank you.

Thank you for
you know we have a tradition.

With like.

Thank you again.

I would have to buy another when I get

home I got to give you a little
souvenir how Thank you I'm not here on.

The way to get it to come back or

to hopefully though you have a space
somewhere in your office where.

You can put it on so
thank you again thank you.