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Long-lived charge-transfer states in 9-Aryl-Acridinium ions: a critical reinvestigation

Lookup NU author(s): Professor Andrew Benniston, Emeritus Professor Anthony Harriman

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Abstract

In the recent literature a simple 9-aryl-acridinium ion was claimed to undergo an intramolecular, photoinduced charge shift to produce an extremely long-lived and very high energy charge-transfer state. The possible consequences of this observation are discussed and the tenability of the claims made is investigated via time resolved spectroscopy of a closely related system with spectroscopic characteristics allowing more solid identification of the actual photophysical events taking place. From the results obtained it appears likely that the long-lived species observed earlier in solution cannot be charge transfer in nature but must instead be identified as the lowest triplet state of the acridinium chromophore.

Publication metadata

Author(s): Verhoeven JW, van Ramesdonk HJ, Zhang H, Groeneveld MM, Benniston AC, Harriman A

Publication type: Article

Publication status: Published

Journal: International Journal of Photoenergy

Year: 2005

Volume: 7

Issue: 2

Pages: 103-108

Print publication date: 01/01/2005

Date deposited: 17/12/2007

ISSN (print): 1110-662X

ISSN (electronic): 1687-529X

Publisher: Hindawi

URL: http://dx.doi.org/10.1155/S1110662X05000152

DOI: 10.1155/S1110662X05000152

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