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Proceedings Paper

Highly efficient pH-induced intramolecular quenching of luminescence in rhenium complexes containing the hydroxypyridinde ligand
Author(s): William D. Bare; Nathan H. Mack; James N. Demas; Benjamin A. DeGraff
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Paper Abstract

12 Rhenium(I) tricarbonyl complexes have been studied as possible luminescence-based pH probes. A dramatic change in luminescence intensity near pH 7 was observed for those species containing the hydroxypyridine ligand. The change in intensity was not accompanied by any significant change in excited state lifetime, indicating a static quenching mechanism. A bimolecular quenching study with phenol and phenolate ions indicates that an intramolecular quenching mechanism is responsible for the observed photophysical changes.

Paper Details

Date Published: 14 February 2001
PDF: 7 pages
Proc. SPIE 4199, Water, Ground, and Air Pollution Monitoring and Remediation, (14 February 2001); doi: 10.1117/12.417357
Show Author Affiliations
William D. Bare, Univ. of Virginia (United States)
Nathan H. Mack, Univ. of Virginia (United States)
James N. Demas, Univ. of Virginia (United States)
Benjamin A. DeGraff, James Madison Univ. (United States)

Published in SPIE Proceedings Vol. 4199:
Water, Ground, and Air Pollution Monitoring and Remediation
Tuan Vo-Dinh; Robert L. Spellicy, Editor(s)

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