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Hydrazone-linked covalent organic frameworks for fluorescence detection of Hg2
Xuefeng Wang1, Zhaowei Yang1, Lingsuo Meng1
1College of Chemistry and Pharmaceutical Sciences, Qingdao Agricultural University, No. 700 Changcheng Road, Qingdao 266109, P. R. China. ningj@qau.edu.cn.
Abstract:
A hydrazone-linked COF (DvDf-C3XJ-COF) with hydrogen-bond reinforcement and abundant coordination sites was synthesized, exhibiting strong fluorescence and high sensitivity/selectivity for Hg2+ detection, with a detection limit of 1.65 × 10-6 M. The fluorescence quenching for Hg2+ is attributed to coordination interactions, which occur through a dynamic quenching process.

