Photoinduced electron transfer reaction of mono-(6-deoxy-p-nitrobenzylamino)-β-cyclodextrin with naphthalene derivatives

Photoinduced electron transfer reaction of mono-(6-deoxy-p-nitrobenzylamino)-β-cyclodextrin with... The fluorescence of a number of naphthalene derivatives was quenched by 6-deoxy-p-nitrobenzylamino-β-cyclodextrin (NACD) in aqueous solution. The origin of the quenching was attributed to the electron transfer from the excited naphthalene groups to the ground state p-nitrobenzyl group of NACD. Both steady-state and time-resolved fluorescence measurements revealed that there were two routes of electron transfer, i.e. (1) electron transfer between the free donor and free acceptor in solution and (2) electron transfer between the donor and acceptor bound in a supramolcular assemble. The evidence collected demonstrates that the latter route was very efficient. As a result, the electron transfer rate and quantum yield of the fluorescence quenching in the present host-guest system were appreciably large. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Research on Chemical Intermediates Springer Journals

Photoinduced electron transfer reaction of mono-(6-deoxy-p-nitrobenzylamino)-β-cyclodextrin with naphthalene derivatives

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Publisher
Brill Academic Publishers
Copyright
Copyright © 2003 by VSP 2003
Subject
Chemistry; Inorganic Chemistry; Physical Chemistry
ISSN
0922-6168
eISSN
1568-5675
D.O.I.
10.1163/156856703321505067
Publisher site
See Article on Publisher Site

Abstract

The fluorescence of a number of naphthalene derivatives was quenched by 6-deoxy-p-nitrobenzylamino-β-cyclodextrin (NACD) in aqueous solution. The origin of the quenching was attributed to the electron transfer from the excited naphthalene groups to the ground state p-nitrobenzyl group of NACD. Both steady-state and time-resolved fluorescence measurements revealed that there were two routes of electron transfer, i.e. (1) electron transfer between the free donor and free acceptor in solution and (2) electron transfer between the donor and acceptor bound in a supramolcular assemble. The evidence collected demonstrates that the latter route was very efficient. As a result, the electron transfer rate and quantum yield of the fluorescence quenching in the present host-guest system were appreciably large.

Journal

Research on Chemical IntermediatesSpringer Journals

Published: Oct 17, 2004

References

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