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Issue 1, 1993
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Charge-transfer complexes of discogenic molecules : a time-resolved study based on Kerr ellipsometry

Dimitra Markovitsi,  Nicola Pfeffer,  Fabrice Charra,  Jean-Michel Nunzi,  Holger Bengs  and  Helmut Ringsdorf 

Abstract

Charge-transfer complexes formed by a discogenic electron donor (2,3,6,7,10,11-hexa-n-pentyloxytriphenylene) and a non-discogenic electron acceptor (2,4,7-trinitrofluoren-9-one) in non-polar solvents are studied by picosecond time-resolved absorption spectroscopy based on Kerr ellipsometry. The transient spectra obtained following laser excitation either in the charge-transfer band or in the lower lying local acceptor band correspond to the oxidized donor and reduced acceptor. Recombination of the geminate ion pair occurs with a first order rate constant of 1.7 × 1010 s–1. It is shown that the polarization of the transient species absorption is orthogonal to the charge-transfer transition. It is also demonstrated that the relative orientation between the donor and the acceptor in the geminate ion pair is not random.

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Article type: Paper
DOI: 10.1039/FT9938900037
Citation: J. Chem. Soc., Faraday Trans., 1993,89, 37-42
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    Charge-transfer complexes of discogenic molecules : a time-resolved study based on Kerr ellipsometry

    D. Markovitsi, N. Pfeffer, F. Charra, J. Nunzi, H. Bengs and H. Ringsdorf, J. Chem. Soc., Faraday Trans., 1993, 89, 37
    DOI: 10.1039/FT9938900037

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