Photoinduced electron transfer in PPV-viologen composites

J. I. Lee, H. Y. Lee, H. K. Shim, H. S. Eom, S. C. Jeoung, D. Kim

Research output: Contribution to journalConference article

2 Citations (Scopus)

Abstract

PPV was sensitized by ethyl viologen which is well known as a good electron acceptor, to achieve efficient ionization of the excitons created by photoexcitation of PPV. PPV/ethyl-viologen composites were successfully prepared from PPV-precursor and ethyl-viologen because both compounds could be soluble in polar solvents such as methanol, water etc. We observed dramatic decrease of photoluminescence efficiency in the PPV/ethyl-viologen composite film as compared with PPV film. This is attributed to photoinduced electron transfer in PPV/ethyl-viologen composites and the efficient ionization of the excitons was occurred in this composite film. Time-resolved photoluminescence of composite films was also studied to obtain the information of this photoinduced electron transfer dynamics.

Original languageEnglish
Pages (from-to)257-260
Number of pages4
JournalMolecular Crystals and Liquid Crystals Science and Technology Section A: Molecular Crystals and Liquid Crystals
Volume316
DOIs
Publication statusPublished - 1998
EventProceedings of the 1998 IEEE Instrumentation and Measurement Technology Conference, IMTC. Part 1 (of 2) - St.Paul, MN, USA
Duration: 1998 May 181998 May 21

All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics

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