Heterometallic organic framework: a highly selective functional probe for carmine and TNP molecules?
CrystEngComm Pub Date: 2022-11-14 DOI: 10.1039/D2CE01417C
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.
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Journal Name：CrystEngComm
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CAS no.: 89640-58-4
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