Issue 9, 2014

A versatile fluorescent dye based on naphthalimide: highly selective detection of Hg2+ in aqueous solution and living cells and its aggregation-induced emission behaviour

Abstract

A simple and versatile fluorescent dye NPS based on 1,8-naphthalimide was successfully designed and prepared. It was found that NPS exhibited excellent selectivity for Hg2+ over many other metal ions including Zn2+, Mn2+, Ba2+, Ni2+, Cu2+, Co2+, Pb2+, Mg2+, Cd2+, Fe2+, Al3+, Ag+, Na+, and Li+. In particular, NPS displayed a significant fluorescence “turn-on” to Hg2+ in aqueous solution and living cells, which could be potentially used for quantification of Hg2+. Moreover, two model compounds were rationally designed and synthesized, from which further insight into the sensing mechanism and binding mode of NPS with Hg2+ was obtained. Surprisingly, NPS exhibited interesting twisted intramolecular charge transfer (TICT) and aggregation-induced emission (AIE) behaviours in aqueous solution.

Graphical abstract: A versatile fluorescent dye based on naphthalimide: highly selective detection of Hg2+ in aqueous solution and living cells and its aggregation-induced emission behaviour

Supplementary files

Article information

Article type
Research Article
Submitted
01 Jul 2014
Accepted
02 Sep 2014
First published
03 Sep 2014

Org. Chem. Front., 2014,1, 1083-1090

A versatile fluorescent dye based on naphthalimide: highly selective detection of Hg2+ in aqueous solution and living cells and its aggregation-induced emission behaviour

H. Un, C. Huang, C. Huang, T. Jia, X. Zhao, C. Wang, L. Xu and H. Yang, Org. Chem. Front., 2014, 1, 1083 DOI: 10.1039/C4QO00185K

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