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

Kenneth P. Ghiggino; James A. Hutchison; D. M. Shafiqul Islan; Yasuyuki Araki; Osamu Ito; Steven J. Langford; Vei Lin Lau; Makoto Takezaki

doi:10.1039/b614282f

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

Kenneth P. Ghiggino, James A. Hutchison, D. M. Shafiqul Islan, Yasuyuki Araki, Osamu Ito, Steven J. Langford, Vei Lin Lau, Makoto Takezaki

Division of Organic- and Biomaterials Research

Research output: Contribution to journal › Article › peer-review

15 Citations (Scopus)

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.

Original language	English
Pages (from-to)	1150-1153
Number of pages	4
Journal	Photochemical and Photobiological Sciences
Volume	5
Issue number	12
DOIs	https://doi.org/10.1039/b614282f
Publication status	Published - 2006 Dec 1

ASJC Scopus subject areas

Physical and Theoretical Chemistry

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10.1039/b614282f

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title = "Metal ion dependent fluorescence quenching in a crown ether bridged porphyrin–fullerene dyad",

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.",

author = "Ghiggino, {Kenneth P.} and Hutchison, {James A.} and {Shafiqul Islan}, {D. M.} and Yasuyuki Araki and Osamu Ito and Langford, {Steven J.} and Lau, {Vei Lin} and Makoto Takezaki",

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T1 - Metal ion dependent fluorescence quenching in a crown ether bridged porphyrin–fullerene dyad

AU - Ghiggino, Kenneth P.

AU - Hutchison, James A.

AU - Shafiqul Islan, D. M.

AU - Araki, Yasuyuki

AU - Ito, Osamu

AU - Langford, Steven J.

AU - Lau, Vei Lin

AU - Takezaki, Makoto

PY - 2006/12/1

Y1 - 2006/12/1

N2 - 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.

AB - 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.

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

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