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Photoinduced charge shift and charge recombination through an alkynyl spacer for an expanded acridinium-based dyad

Lookup NU author(s): Professor Andrew Benniston, Dr Jerry Hagon, xiaoyan He, Emeritus Professor Bill CleggORCiD, Dr Ross Harrington


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The photophysical and electrochemical properties of a dyad comprising an expanded acridinium light-harvester, coupled via a triple bond to a trialkyloxybenzene donor, are described. Laser excitation of the dyad in 1,2-dichloroethane (DCE) results in rapid charge shift (5 ps) followed by slower charge recombination (81 ps) to completely restore the ground state. Discrimination between forward and return electron transfer (k(ret)/k(for) similar to 16) is rather poor. There is no indication of triplet formation on the expanded acridinium-based group following charge recombination.

Publication metadata

Author(s): Benniston AC, Hagon J, He XY, Lemmetyinen H, Tkachenko NV, Clegg W, Harrington RW

Publication type: Article

Publication status: Published

Journal: Physical Chemistry Chemical Physics

Year: 2012

Volume: 14

Issue: 9

Pages: 3194-3199

Print publication date: 18/01/2012

ISSN (print): 1463-9076

ISSN (electronic): 1463-9084

Publisher: Royal Society of Chemistry


DOI: 10.1039/c2cp23273a


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