An OFF-OFF-ON fluorescence sensor for metal ions in stepwise complex formation of 2,3,5,6-tetrakis(2-pyridyl)pyrazine with metal ions

Junpei Yuasa, Shunichi Fukuzumi

Research output: Contribution to journalArticlepeer-review

34 Scopus citations

Abstract

The fluorescence intensity of 2,3,5,6-tetrakis(2-pyridyl)pyrazine (TPPZ) begins to increase at concentrations of metal ions (Mn+) above the 1:2 ratio of metal ion concentration to the initial concentration of TPPZ ([Mn+]/[TPPZ]0 > 0.5), when a 2:1 complex of TPPZ with Mn+ [(TPPZ)2-Mn+] is converted to a 1:1 complex of TPPZ with Mn+ (TPPZ-Mn+), which exhibits strong fluorescence.

Original languageEnglish
Pages (from-to)15976-15977
Number of pages2
JournalJournal of the American Chemical Society
Volume128
Issue number50
DOIs
StatePublished - 20 Dec 2006

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