Photocurrent generation of diarylethene polymers

Eunkyoung Kim, Hyo Won Lee

Research output: Contribution to journalArticle

11 Citations (Scopus)

Abstract

The combination of photochromism and electrical properties in diarylethene (DA) polymers were investigated. Photoswitching function could be introduced into a polymer by incorporating 2,3-bis(2-methylbenzo[b]thiophene-3-yl) hexafluorocyclopentene (BTF) unit plus p-phenylene vinylene (PPV) unit alternatively. The photochromic film of BTF-PPV polymer become dark colored upon exposure to a UV light because π-conjugation delocalizes between the π-conjugative groups and the new absorption band centered at 570 nm was observed from the colored film. In dark the photochromic electrode coated with BTF-PPV copolymer did not show current generation. Upon exposure to UV, large incident photon-to-current generation was observed with the quinone/hydroquinone carrier couple under a bias potential of 165 mV (vs. Ag/AgCl). By optical modulation, a reversible photocurrent generation was observed from the photochromic electrode. On the otherhands, DA polymers derived from 2,3-bis(2-methyl-3-thienyl)hexafluorocyclopentene (TF) and PPV showed no photocurrent generation, indicating photodecomposition of the closed isomer.

Original languageEnglish
Pages (from-to)281/[581]-286/[586]
JournalMolecular Crystals and Liquid Crystals
Volume431
DOIs
Publication statusPublished - 2005 Dec 1

Fingerprint

Photocurrents
photocurrents
Polymers
polymers
Photochromism
photochromism
Thiophenes
photodecomposition
Electrodes
electrodes
Light modulation
light modulation
quinones
Thiophene
thiophenes
conjugation
Ultraviolet radiation
Isomers
Absorption spectra
copolymers

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Materials Science(all)
  • Condensed Matter Physics

Cite this

Kim, Eunkyoung ; Lee, Hyo Won. / Photocurrent generation of diarylethene polymers. In: Molecular Crystals and Liquid Crystals. 2005 ; Vol. 431. pp. 281/[581]-286/[586].
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Photocurrent generation of diarylethene polymers. / Kim, Eunkyoung; Lee, Hyo Won.

In: Molecular Crystals and Liquid Crystals, Vol. 431, 01.12.2005, p. 281/[581]-286/[586].

Research output: Contribution to journalArticle

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