Issue 10, 2003
From the journal:

Photochemical & Photobiological Sciences

Spin control of the lifetime of an intramolecular charge-transfer excited state

Lene Hviid,a   Wim G. Bouwman,b   Michael N. Paddon-Row,c   Hendrik J. van Ramesdonk,a   Jan W. Verhoevena  and  Albert M. Brouwer*a  

* Corresponding authors

a Institute of Molecular Chemistry, University of Amsterdam, Nieuwe Achtergracht 129, 1018 WS Amsterdam, The Netherlands
E-mail: fred@science.uva.nl

b Interfacultair Reactor Instituut, Technische Universiteit Delft, Mekelweg 15, 2629 JB Delft, The Netherlands
E-mail: w.g.bouwman@iri.tudelft.nl

c The School of Chemical Sciences, University of New South Wales, Sydney, NSW 2015, Australia
E-mail: m.paddonrow@unsw.edu.au

Abstract

Triplet-sensitized generation of a long-lived intramolecular charge-separated excited state is described in an electron donor–acceptor molecule with a short distance between the donor and the acceptor. Time-resolved UV-Vis optical absorption spectroscopy shows that the lifetime of this triplet excited state is 1.4 µs in acetonitrile at 298 K, i.e. five orders of magnitude greater than that of the corresponding singlet charge-separated state. In slightly less polar alkane nitrile solvents, the local and CT triplet states coexist, which allows determination of their relative energies.

Graphical abstract: Spin control of the lifetime of an intramolecular charge-transfer excited state

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Article information

DOI
https://doi.org/10.1039/B306052G
Article type
Paper
Submitted
29 May 2003
Accepted
02 Jul 2003
First published
25 Jul 2003

Photochem. Photobiol. Sci., 2003,2, 995-1001

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Spin control of the lifetime of an intramolecular charge-transfer excited state

L. Hviid, W. G. Bouwman, M. N. Paddon-Row, H. J. van Ramesdonk, J. W. Verhoeven and A. M. Brouwer, Photochem. Photobiol. Sci., 2003, 2, 995 DOI: 10.1039/B306052G

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