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An efficient fluorescence sensor for superoxide with an acridinium ion-linked porphyrin triad

Title
An efficient fluorescence sensor for superoxide with an acridinium ion-linked porphyrin triad
Authors
Kotani H.Ohkubo K.Crossley M.J.Fukuzumi S.
Ewha Authors
Shunichi Fukuzumi
SCOPUS Author ID
Shunichi Fukuzumiscopus
Issue Date
2011
Journal Title
Journal of the American Chemical Society
ISSN
0002-7863JCR Link
Citation
vol. 133, no. 29, pp. 11092 - 11095
Indexed
SCI; SCIE; SCOPUS WOS scopus
Abstract
Addition of potassium superoxide with 18-crown-6 ether (KO 2 •- - 18-crown-6) to a toluene solution of an acridinium ion-linked porphyrin triad (Acr + - H 2P - Acr +) resulted in a remarkable enhancement of the fluorescence intensity. Thus, Acr + - H 2P - Acr + acts as an efficient fluorescence sensor for superoxide. Electron transfer from KO 2 • - - 18-crown-6 to the Acr + moiety to produce the two-electron-reduced species (Acr • - H 2P - Acr •) results in inhibition of the fluorescence quenching via photoinduced electron transfer, as revealed by laser flash photolysis measurements. © 2011 American Chemical Society.
DOI
10.1021/ja204161j
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자연과학대학 > 화학·나노과학전공 > Journal papers
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