Photoconductivity and photovoltaic effect of charge‐transfer complex of poly[4‐phenyl‐2,6‐(p‐phenoxy) quinoline] and 2,3‐dichloro‐5,6‐dicyano‐1,4‐benzoquinone

Donghoon Choi, Eun Ju Lee, Kyeong‐Ah ‐A Kim, Soo Young Park, Nakjoong Kim

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

A new polymer containing a heterocyclic quinoline unit in the main chain, poly[4‐phenyl‐2,6‐(p‐phenoxy) quinoline] (PQ), was synthesized by an acid‐catalyzed self‐condensation reaction. We have found that PQ, which is generally a good insulator itself, can show photoconductivity when doped with an electron acceptor. From the UV‐VIS absorption spectra, we found that PQ can form a charge‐transfer (CT) complex with an electron acceptor, 2,3‐dichloro‐5,6‐dicyano‐1,4‐benzoquinone (DDQ). The CT complex of the PQ‐DDQ mixture showed distinct photoconductivity. Employing the DDQ composition ranging from 5 to 10 wt %, the ratio of dark and photoconductivity was calculated to be about 1 : 100 at an applied electric field of 105 V/cm. Additionally, the bilayer sample of PQ/DDQ exhibited a significant photovoltaic effect. The photovoltaic current increased with increasing photointensity. The open‐circuit voltage was measured ranging from 0.4 to 0.7 V and the photovoltaic conversion efficiency was calculated to be 10−3−10−2%. The PQ film treated with DDQ vapor showed a relatively higher photovoltaic effect than that of the sample treated with DDQ solution. © 1993 John Wiley & Sons, Inc.

Original languageEnglish
Pages (from-to)1429-1433
Number of pages5
JournalJournal of Applied Polymer Science
Volume50
Issue number8
DOIs
Publication statusPublished - 1993 Nov 20
Externally publishedYes

ASJC Scopus subject areas

  • Chemistry(all)
  • Surfaces, Coatings and Films
  • Polymers and Plastics
  • Materials Chemistry

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