Issue 9, 2012

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

Abstract

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 (kret/kfor ∼ 16) is rather poor. There is no indication of triplet formation on the expanded acridinium-based group following charge recombination.

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

Supplementary files

Article information

Article type
Paper
Submitted
17 Oct 2011
Accepted
09 Jan 2012
First published
18 Jan 2012

Phys. Chem. Chem. Phys., 2012,14, 3194-3199

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

A. C. Benniston, J. Hagon, X. He, H. Lemmetyinen, N. V. Tkachenko, W. Clegg and R. W. Harrington, Phys. Chem. Chem. Phys., 2012, 14, 3194 DOI: 10.1039/C2CP23273A

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