Issue 48, 2022

Heterometallic organic framework: a highly selective functional probe for carmine and TNP molecules

Abstract

Based on the 2,2′-bipyridine-4,4′-dicarboxylic acid ligand (H2LZ), a heterometal–organic framework with a three-dimensional interpenetrating structure, namely [TbZn(LZ)2(HCOO)(H2O)3]n (1), was synthesized. Compound 1 exhibited stable luminescence in the pH range of 2–12 in an aqueous solution. It is noteworthy to mention that compound 1 could discern carmine (CM) in some food additives and trinitrophenol (TNP) in nitroaromatic explosives by the fluorescence quenching effect. In particular, compound 1 displayed high sensitivity, selectivity, recyclability, and anti-interference for sensing CM and TNP in aqueous solutions, and the detection limits of CM and TNP were 7.76 × 10−6 M and 1.35 × 10−4 M, respectively. In addition, the fluorescence mechanisms of compound 1 for sensing CM and TNP molecules are also discussed in detail.

Graphical abstract: Heterometallic organic framework: a highly selective functional probe for carmine and TNP molecules

Supplementary files

Article information

Article type
Paper
Submitted
13 Oct 2022
Accepted
13 Nov 2022
First published
14 Nov 2022

CrystEngComm, 2022,24, 8434-8439

Heterometallic organic framework: a highly selective functional probe for carmine and TNP molecules

N. Wu, Z. Li, Y. Jia, D. Li and M. Hu, CrystEngComm, 2022, 24, 8434 DOI: 10.1039/D2CE01417C

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