Chemical Forums
Specialty Chemistry Forums => Materials and Nanochemistry forum => Topic started by: amal on September 04, 2011, 08:21:56 PM
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I am trying to find an electrically conductive polymer, I have searched a lot and could not find any useful info.
I want to buy it and dissolve it in organic solvent and then make thin coating from it (by any method, i.e. spin coating). the coating should be electrically conductive.
Thanks
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google polyacetylene McDiarmid and others were awarded the Noble Prize for its discovery a few years ago (google).
As I recall, polyacetylenedoped with I2 is silver colored and has a conductivity better than silver the best
RT electrical conductor.
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google polyacetylene McDiarmid and others were awarded the Noble Prize for its discovery a few years ago (google).
As I recall, polyacetylenedoped with I2 is silver colored and has a conductivity better than silver the best
RT electrical conductor.
will this polymer dissolve in organic solvent? will it loss its conductivity?
Thanks
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It all depends on what you desire to achieve.
A commonly used polymer for charge conduction in devices is PEDOT:PSS.
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PEDOT-PSS is a good option and is commercially available, and so is polyaniline. These are not soluble in organic solvents, though, they are generally aqueous suspensions. Polypyrrole would work as well.
http://www.sigmaaldrich.com/etc/medialib/docs/Aldrich/General_Information/conducting_polymers.Par.0001.File.tmp/conducting_polymers.pdf
To get something which is soluble in organics, you will have to start with a semiconducting polymer and dope it to make it conductive. Depending on how much conductivity you need, the poly-3-alkylthiophenes above might work. To dope, you can expose the polymer to iodine vapor or ferric chloride vapor/solution.
You can also go with a precursor route; there are precursor polymers to polyacetylene in the link above, or you can spincast terthiophene then oxidize it to polythiophene.
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Can you say more about your application? There are rubber copounds that are conductive. But, you wouldn't want to send large amounts of current through them. They are made conductive by putting large amounts of conductive carbon black in the compound.
Other polymers can be made conductive by adding a conductive metal to the compound. Most of the conductive metals are expensive (read that as silver or worse).
Hope this helps and good luck.
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Dear amal! As i know, All normal conductive polymer are insoluble in organic solvent or water, thus limiting it's practical application to large extent. To date the most extensively used solution to address this insolubility problem is to incorporate kinds of substituents onto the polymer backbone (ex: polythiophene) such as alkyl, alkoxyl, perfluoroalkyl, amine, carboxyl and zwitterionic groups, making
PT soluble or dispersible in organic solvents, water or supercritical fluids. These soluble polymer derivatives are directly used as film
materials. Currently, I am doing thesis synthesized polythiophene, hoping to discuss with you and everyone. ncaothach from Vietnam
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Hello!
I am new here and I need some help.
Can you make polyaniline and polyacetylene in home lab?
Which chemicals I need to make conductive polyaniline (PANI)? And how is the process?
Please if you can help me!
Best regards
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Some initial information to aid in the discussion
http://en.wikipedia.org/wiki/Polyaniline
http://en.wikipedia.org/wiki/Polyacetylene