A selective fluorescent sensor for Zn2+ based on aggregation-induced emission (AIE) activity and metal chelating ability of bis(2-pyridyl)-diphenylethylene

作者：Gabr Moustafa T; Pigge F Christopher^*

来源：Dalton Transactions, 2016, 45(36): 14039-14043.

DOI：10.1039/c6dt02657e

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 Zn2+-selective enhanced fluorescence in aqueous solution, in contrast to the behavior of isomeric bis(3- and 4-pyridyl) ethylenes. The Zn2+-sensing capability of this material is attributed to formation of chelated Zn2+-bis(pyridyl) complexes and is supported by the X-ray crystal structure of a bis(2-pyridyl) ethylene-Zn(OAc)(2) complex.

• 出版日期2016