Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
5209837 | Reactive and Functional Polymers | 2014 | 7 Pages |
Abstract
I report a facile synthetic route for synthesizing a main-chain donor-acceptor type polymer containing strong electron donating dialkylamino groups and strong electron accepting 1,1,4,4-tetracyanobuta-1,3-diene (TCBD) units. To accomplish this, an electron donating monomer 4,6-diethynyl-N,N,N,N-tetrahexylbenzene-1,3-diamine was successfully synthesized by converting two carbaldehyde groups in the corresponding monomer into acetylene groups using lithium trimethylsilyldiazomethane via Colvin rearrangement. This electron donating monomer was then polymerized with a carbonyl-activated diiodide monomer to afford an electron-donating Ï-conjugated precursor polymer with a reasonably high molecular weight, which was further reacted with TCNE via cycloaddition/retroelectrocyclization reaction under mild conditions to afford the target polymer with a low bandgap energy (Egopt=1.40eV and EgCV=1.10eV) arising from strong intramolecular charge-transfer interactions between electron donors and acceptors in the polymer.
Related Topics
Physical Sciences and Engineering
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Organic Chemistry
Authors
Wenyi Huang,