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

Dong Hoon Choi, Eun Ju Lee, Kyeong Ah 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 a 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.

Original languageEnglish
Pages (from-to)1429-1433
Number of pages5
JournalJournal of Applied Polymer Science
Volume50
Issue number8
DOIs
Publication statusPublished - 1993 Dec 1
Externally publishedYes

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Photovoltaic effects
Photoconductivity
Charge transfer
Condensation reactions
Electrons
Open circuit voltage
Conversion efficiency
Absorption spectra
Polymers
Vapors
Electric fields
Acids
Chemical analysis
dichlorodicyanobenzoquinone
quinoline

ASJC Scopus subject areas

  • Polymers and Plastics

Cite this

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. / Choi, Dong Hoon; Lee, Eun Ju; Kim, Kyeong Ah; Park, Soo Young; Kim, Nakjoong.

In: Journal of Applied Polymer Science, Vol. 50, No. 8, 01.12.1993, p. 1429-1433.

Research output: Contribution to journalArticle

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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 a 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.",
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