Oxolinic Acid Generated Green Fluorescence Based on a Terbium-Functionalized Covalent Organic Framework

Jin, Qianqian; Hou, Yuzhen; Zhu, Dandan; Yu, Yanxin; Ren, Yanbiao

doi:10.1021/acs.langmuir.4c01141

Langmuir

2024

DOI: 10.1021/acs.langmuir.4c01141

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Oxolinic Acid Generated Green Fluorescence Based on a Terbium-Functionalized Covalent Organic Framework

Qianqian Jin,

Yuzhen Hou,

Dandan Zhu

et al.

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Cited by 2 publications

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A review of fluorescent covalent organic frameworks for heavy metal ion sensors

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He,

Wei

et al. 2025

Chemical Engineering Journal

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A review of fluorescent covalent organic frameworks for heavy metal ion sensors

Wang,

He,

Wei

et al. 2025

Chemical Engineering Journal

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Rational Design of Regenerable Amino-Functionalized Fluorescent Covalent Organic Framework for the Exclusive Detection of Mercury(II)

Ren,

Hou,

Song

et al. 2024

Langmuir

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Goal-oriented development of novel covalent organic frameworks (COFs) to construct a sensing platform for highly toxic mercury (II, Hg 2+ ) is of tremendous significance. Recently, numerous COFs with sulfur-based ligands were developed for Hg 2+ monitoring; however, strong binding of Hg 2+ by sulfur makes their regeneration very tough. Herein, we designed and developed an amino-functionalized fluorescent COF (COF− NH 2 ) through facile postmodification for Hg 2+ detection in which the π-conjugation skeleton is the signal reader and the nitrogenbased side is the highly selective Hg 2+ receptor. More importantly, this nitrogen-based receptor permits the reversible binding of Hg 2+ . As a sensing platform, the outstanding performance of COF−NH 2 for Hg 2+ detection was reached with respect to high sensitivity with an ultralow detection of 15.3 nM, real-time response with rapid signal change of 10 s, and facile visualization with significant fluorescence color change. Expectedly, COF−NH 2 obtained facile recycling which still shows excellent response performance toward Hg 2+ after six cycles based on the reversible interaction between amino groups and Hg 2+ . Our work not only shows an attractive foreground of fluorescent COF for Hg 2+ detection but also emphasizes the easy construction of novel COF materials via the rational introduction of metal ligands for the recognition of other metal ions.

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Oxolinic Acid Generated Green Fluorescence Based on a Terbium-Functionalized Covalent Organic Framework

Cited by 2 publications

References 39 publications

A review of fluorescent covalent organic frameworks for heavy metal ion sensors

A review of fluorescent covalent organic frameworks for heavy metal ion sensors

Rational Design of Regenerable Amino-Functionalized Fluorescent Covalent Organic Framework for the Exclusive Detection of Mercury(II)

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