Photo-induced reversible emission switching in pyridine/europium(III) chloride/organic fluorophore system

Evgeniya Vaganova, Shlomo Yitzchaik, Lev Shapiro, Mark Sigalov, Vladimir Khodorkovsky

Research output: Contribution to journalArticlepeer-review

8 Scopus citations

Abstract

A blue-red reversible optical switch was created by combining EuIII, pyridine, and a fluorescent organic chromophore. In the initial stage Ch-EuIII interaction was responsible for the EuIII emission quenching. The irradiation of pyridine brought about its protonation and formation of the hydrogen-bonded aggregates. The high electron-accepting ability of pyridinium cations lead to donor-acceptor interaction with the chromophore, and quenching of fluorescence in the presence of the EuCl3 or (Et)4NCl.

Original languageEnglish
Pages (from-to)1669-1671
Number of pages3
JournalAdvanced Materials
Volume12
Issue number22
DOIs
StatePublished - 16 Nov 2000

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