A selective fluorescent sensor for Zn2+ based on aggregation-induced emission (AIE) activity and metal chelating ability of bis(2-pyridyl)diphenylethylene. Issue 36 (23rd August 2016)

• Record Type: Journal Article
• Authors: Gabr, Moustafa T.; Pigge, F. Christopher
• Is Part Of: Dalton transactions. Volume 45:Issue 36(2016)
• Page Start: 14039
• Page End: 14043
• Publication Date: 2016-08-23
• Subjects: Chemistry, Inorganic -- Periodicals; Chemistry, Physical and theoretical -- Periodicals; Chemistry, Inorganic -- Periodicals; 546.05
• DOI: 10.1039/c6dt02657e
• Languages: English
• ISSNs: 1477-9226

Abstract

Abstract : A bis(2-pyridyl)tetraarylethylene exhibits selective "turn-on" fluorescence enhancement in the presence of Zn 2+ ions. Abstract : Polypyridyl ethylenes have been prepared as heterocyclic analogues of tetraphenylethylene. In addition to conventional AIE effects, a derivative possessing a 1, 1-bis(2-pyridyl)ethylene fragment displays Zn 2+ -selective enhanced fluorescence in aqueous solution, in contrast to the behavior of isomeric bis(3- and 4-pyridyl)ethylenes. The Zn 2+ -sensing capability of this material is attributed to formation of chelated Zn 2+ -bis(pyridyl) complexes and is supported by the X-ray crystal structure of a bis(2-pyridyl)ethylene-Zn(OAc)2 complex.