Photophysics and photochemistry of a water-soluble C60 dendrimer: Fluorescence quenching by halides and photoinduced oxidation of I-

Texier I, Berberan-Santos M, Fedorov A, Brettreich M, Schönberger H, Hirsch A, Leach S, Bensasson RV (2001)

Publication Type: Journal article, Original article

Publication year: 2001

Journal

Journal of Physical Chemistry A American Chemical Society

Original Authors: Texier I., Berberan-Santos M.N., Fedorov A., Brettreich M., Schönberger H., Hirsch A., Leach S., Bensasson R.V.

Publisher: American Chemical Society

Book Volume: 105

Pages Range: 10278-10285

Journal Issue: 45

DOI: 10.1021/jp010215a

Abstract

Using electronic absorption spectroscopy, and steady-state and time-resolved fluorescence, we studied the singlet state properties of dendro[60]fullerene, a C methanoderivative whose addend is a water-soluble dendrimer. Fluorescence quenching, especially by halide ions in water, was characterized at several temperatures. From a new relation for the activation energy of a diffusion-influenced reaction and from a comparison with the quenching in organic solvents, it is concluded that the quenching occurs by the external heavy-atom effect. An efficient photoinduced oxidation of iodide in aerated solutions and in the presence of a fullerene is also reported. The photoinduced oxidation mechanism exclusively involves ground-state oxygen.

Authors with CRIS profile

Michael Brettreich Lehrstuhl für Organische Chemie II Andreas Hirsch Lehrstuhl für Organische Chemie II

Involved external institutions

University of Grenoble Alpes (UGA) / Université de Grenoble FR France (FR) National Center for Scientific Research / Centre national de la recherche scientifique (CNRS) FR France (FR)

How to cite

APA:

Texier, I., Berberan-Santos, M., Fedorov, A., Brettreich, M., Schönberger, H., Hirsch, A.,... Bensasson, R.V. (2001). Photophysics and photochemistry of a water-soluble C60 dendrimer: Fluorescence quenching by halides and photoinduced oxidation of I-. Journal of Physical Chemistry A, 105(45), 10278-10285. https://doi.org/10.1021/jp010215a

MLA:

Texier, Isabelle, et al. "Photophysics and photochemistry of a water-soluble C60 dendrimer: Fluorescence quenching by halides and photoinduced oxidation of I-." Journal of Physical Chemistry A 105.45 (2001): 10278-10285.

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