期刊
CHINESE JOURNAL OF STRUCTURAL CHEMISTRY
卷 41, 期 9, 页码 2209087-2209093出版社
ELSEVIER
DOI: 10.14102/j.cnki.0254-5861.2022-0077
关键词
coordination polymer; fluorescence sensing; heavy metal ions; pesticides; X-ray crystallography
Two coordination polymers with one- and two-dimensional architectures were synthesized using Zn(II) ion and different organic linkers. The two polymers displayed effective, sensitive, and selective abilities towards Fe3+ and Cr2O72- ions, while CP-1 showed better performance in sensing metamitron and CP-2 was highly sensitive towards imidacloprid. The quenching of fluorescence intensity involves the inner filter effect and the fluorescence resonance energy transfer effect.
Two coordination polymers (CPs) [Zn(PTA)(DTP)(H2O)2]center dot(DMF) (CP-1) and [Zn(BTC)(DTP)]center dot(CH3CN)1.5 center dot(H2O)4(CP-2) with one-and two-dimensional architec-tures were synthesized from Zn(II) ion and different organic linkers like terephthalic acid (H2PTA), benzene-1,3,5-tricarboxylic acid (H3BTC), and 3,5-di(1,2,4-triazol-1-yl) pyri-dine (DTP). The fluorescent sensing experiments showed that the two CPs displayed effective, sensitive, and selective abilities towards Fe3+ and Cr2O72-. For sensing the pesticides, CP-1 outperforms in sensing of metamitron (MMT) and CP-2 is ultrasensi-tive towards imidacloprid (IMI). The possible mechanisms involved in the quenching of the fluorescence intensity include the inner filter effect (IFE) and the fluorescence re-sonance energy transfer (FRET) effect.
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