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Topic: conjugated polymers/materials  (Read 3349 times)

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Offline agalev

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conjugated polymers/materials
« on: March 27, 2015, 12:44:46 PM »
Hey,

I'm having a problem for some time finding out which of these materials are conjugated polymers and which aren't.

Can somebody please help me?
I know it has something to do with pi-bounds but I can't find an answer to which are the conjugated polymers





great thanks to anyone who could help me out!

Offline Arkcon

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Re: conjugated polymers/materials
« Reply #1 on: March 27, 2015, 01:07:35 PM »
Yes, conjugated pi bods does have "something" to do with pi bods.  Can you recheck you class notes or textbook what exactly what?  This is a pretty simple definition question.  There's not much of a hint or help we can give you.
Hey, I'm not judging.  I just like to shoot straight.  I'm a man of science.

Offline agalev

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Re: conjugated polymers/materials
« Reply #2 on: March 28, 2015, 11:00:14 AM »
Yeah I checked the definition, but how do I know in the examples which of these polymers have pi bonds?

Offline Arkcon

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Re: conjugated polymers/materials
« Reply #3 on: March 28, 2015, 02:13:05 PM »
Yeah I checked the definition, but how do I know in the examples which of these polymers have pi bonds?

From the definition:  http://en.wikipedia.org/wiki/Pi_bond#Multiple_bonds
Hey, I'm not judging.  I just like to shoot straight.  I'm a man of science.

Offline samyukth

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Re: conjugated polymers/materials
« Reply #4 on: May 09, 2015, 11:03:55 AM »
Organic PV right? Even im finding answers for it. There is no enough information given to attend the question.

Offline kriggy

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Re: conjugated polymers/materials
« Reply #5 on: May 09, 2015, 11:10:36 AM »
Organic PV right? Even im finding answers for it. There is no enough information given to attend the question.

Wait what? Out of all those compounds, there are only two that are polymers...

Agalev:
single bond = sigma bond
double bond = sigma bond + pi bond
tripple bond = sigma bond + two pi bonds

there is a question: what does it mean than bonds are conjugated? can you give a example of compound with cojugated bonds?

Offline masaa

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Re: conjugated polymers/materials
« Reply #6 on: May 26, 2015, 02:15:32 PM »
single bond followed by double bond followed by single bond...etc.
the lower band gap the higher conjugated polymer.

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