Dual dopable poly(phenylacetylene) with nitronyl nitroxide pendants for reversible ambipolar charging and discharging

Kenichi Oyaizu, Takashi Sukegawa, Hiroyuki Nishide

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Abstract

An electrode-attached layer of poly(phenylacetylene) bearing a pendant nitronyl nitroxide group per repeating unit, obtained by the Rh-catalyzed polymerization of 2-(4-ethynylphenyl)-4,4,5,5- tetramethylimidazoline-l-oxyl 3-oxide, underwent oxidation and reduction at 0.80 and -0.84V vs. Ag/AgCl, respectively. The magnetically determined unpaired electron density of 92% was coulometrically reproduced, which supported the presumption that the radical survived during the course of the polymerization to allow both positive and negative charging of the pristine neutral polymer substantially per repeating unit. Galvanostatic Coulomb titration revealed the charge storage capability of the polymer, which demonstrated usefulness as organic electrode-active material with unprecedented ambipolar chargeability.

Original languageEnglish
Pages (from-to)184-185
Number of pages2
JournalChemistry Letters
Volume40
Issue number2
DOIs
Publication statusPublished - 2011

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ASJC Scopus subject areas

  • Chemistry(all)

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