Issue 12, 2006
From the journal:

Photochemical & Photobiological Sciences

Metal ion dependent fluorescence quenching in a crown ether bridged porphyrin–fullerene dyad†

Kenneth P. Ghiggino,*a   James A. Hutchison,a   D.-M. Shafiqul Islan,b   Yasuyuki Araki,b   Osamu Ito,b   Steven J. Langford,c   Vei-Lin Lauc  and  Makoto Takezaki‡a  

* Corresponding authors

a School of Chemistry, University of Melbourne, Victoria, Australia
E-mail: ghiggino@unimelb.edu.au
Fax: +03 9347 5180
Tel: +03 8344 7137

b Institute of Multi-disciplinary Research for Advanced Materials, Tohoku University, Katahira, Sendai, Japan

c School of Chemistry, Monash University, Victoria, Australia

Abstract

The fluorescence decay kinetics from a benzonitrile solution of a dibenzo-18-crown-6 ether bridged porphyrin–fullerene dyad has been studied in the presence of a range of metal ions. Dual-exponential fluorescence decay behaviour has been attributed to conformational flexibility of the molecule influencing quenching interactions between the photo-excited porphyrin and fullerene. Additions of sodium, potassium and lithium ions significantly modulate the observed fluorescence decay processes while the larger tetrabutylammonium ion has only a minor affect. The results are discussed in terms of ion inclusion within the crown ether affecting both the bridge conformational properties and donor–acceptor electronic interactions.

Graphical abstract: Metal ion dependent fluorescence quenching in a crown ether bridged porphyrin–fullerene dyad

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Article information

DOI
https://doi.org/10.1039/B614282F
Article type
Paper
Submitted
03 Oct 2006
Accepted
26 Oct 2006
First published
07 Nov 2006

Photochem. Photobiol. Sci., 2006,5, 1150-1153

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Metal ion dependent fluorescence quenching in a crown ether bridged porphyrin–fullerene dyad

K. P. Ghiggino, J. A. Hutchison, D.-M. Shafiqul Islan, Y. Araki, O. Ito, S. J. Langford, V. Lau and M. Takezaki, Photochem. Photobiol. Sci., 2006, 5, 1150 DOI: 10.1039/B614282F

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