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

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Hydrazone-linked covalent organic frameworks for fluorescence detection of Hg²⁺†

Xuefeng Wang,

^a Zhaowei Yang,^a Lingsuo Meng,^a Xuehui Li,^a Hongtao Wei,^a Jing Ning,

*^a Shitao Wang,

^b Dapeng Cao

*^b and Long Hao

Author affiliations

* Corresponding authors

^a College of Chemistry and Pharmaceutical Sciences, Qingdao Agricultural University, No. 700 Changcheng Road, Qingdao 266109, P. R. China
E-mail: ningj@qau.edu.cn

^b State Key Laboratory of Organic–Inorganic Composites, Beijing University of Chemical Technology, Beijing 100029, P. R. China
E-mail: caodp@mail.buct.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.

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Article information

DOI: https://doi.org/10.1039/D4CC05468G
Article type: Communication
Submitted: 15 Oct 2024
Accepted: 08 Nov 2024
First published: 11 Nov 2024

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Chem. Commun., 2024,60, 14391-14394

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Hydrazone-linked covalent organic frameworks for fluorescence detection of Hg²⁺

X. Wang, Z. Yang, L. Meng, X. Li, H. Wei, J. Ning, S. Wang, D. Cao and L. Hao, Chem. Commun., 2024, 60, 14391 DOI: 10.1039/D4CC05468G

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