Hydrazone-linked covalent organic frameworks for fluorescence detection of Hg2

Xuefeng Wang; Zhaowei Yang; Lingsuo Meng; Xuehui Li; Hongtao Wei; Jing Ning; Shitao Wang; Dapeng Cao; Long Hao

doi:10.1039/d4cc05468g

Hydrazone-linked covalent organic frameworks for fluorescence detection of Hg²

Chem Commun (Camb). 2024 Nov 19. doi: 10.1039/d4cc05468g. Online ahead of print.

Authors

Xuefeng Wang¹, Zhaowei Yang¹, Lingsuo Meng¹, Xuehui Li¹, Hongtao Wei¹, Jing Ning¹, Shitao Wang², Dapeng Cao², Long Hao¹

Affiliations

¹ College of Chemistry and Pharmaceutical Sciences, Qingdao Agricultural University, No. 700 Changcheng Road, Qingdao 266109, P. R. China. [email protected].
² State Key Laboratory of Organic-Inorganic Composites, Beijing University of Chemical Technology, Beijing 100029, P. R. China. [email protected].

PMID: 39558873
DOI: 10.1039/d4cc05468g

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.