1. Solution-processable transmissive-to-green switching electrochromic polyamides bearing 2,7-bis(diphenylamino)naphthalene units
- Author
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Jhong-Syuan Han and Sheng-Huei Hsiao
- Subjects
Polymers and Plastics ,Organic Chemistry ,02 engineering and technology ,Intervalence charge transfer ,010402 general chemistry ,021001 nanoscience & nanotechnology ,Photochemistry ,01 natural sciences ,0104 chemical sciences ,chemistry.chemical_compound ,Monomer ,chemistry ,Polymerization ,Electrochromism ,Diamine ,Materials Chemistry ,Thermal stability ,Solubility ,0210 nano-technology ,Naphthalene - Abstract
A new 2,7-bis(diphenylamino)naphthalene-based diamine monomer, N,N′-bis(4-aminophenyl)-N,N′-bis(4-methoxyphenyl)-2,7-naphthalenediamine, was synthesized and polymerized with various aromatic dicarboxylic acids via the phosphorylation polyamidation reaction leading to a new series of redox-active and electrochromic aromatic polyamides. The polyamides exhibited high solubility in many polar aprotic solvents, good film-forming ability, and high thermal stability. They also showed stable electrochemical stability and anodically green coloring when oxidized. The two arylamino centers showed a weak electronic interaction via the 2,7-naphthalenediyl bridge, and thus they started to oxidize almost at the same time. No intervalence charge transfer (IVCT) absorption was observed during the oxidation processes of these polyamides. © 2016 Wiley Periodicals, Inc. J. Polym. Sci., Part A: Polym. Chem. 2017, 55, 1409–1421
- Published
- 2017