两种镉（II）配位聚合物作为多功能发光传感器，用于检测水介质中的六价铬阴离子、二氯硝基苯胺农药和硝基呋喃抗生素。
Two cadmium(II) coordination polymers as multi-functional luminescent sensors for the detection of Cr(VI) anions, dichloronitroaniline pesticide, and nitrofuran antibiotic in aqueous media.
作者信息
Fan Liming, Wang Feng, Zhao Dongsheng, Sun Xinhu, Chen Hongtai, Wang Huaiwei, Zhang Xiutang
机构信息
Department of Chemistry, College of Science, North University of China, Taiyuan 030051, China.
Department of Chemistry, College of Science, North University of China, Taiyuan 030051, China.
出版信息
Spectrochim Acta A Mol Biomol Spectrosc. 2020 Oct 5;239:118467. doi: 10.1016/j.saa.2020.118467. Epub 2020 May 12.
Two ternary cadmium(II) coordination polymers, with the formulas being {[Cd(tptc)(bpz)(HO)]·0.5HO} (CP 1), and [Cd(tptc)(bpy)] (CP 2), were designed through mixed ligands strategy. Benefiting from the excellent chemical stability and luminescent property, two Cd(II) CPs possessing efficient multi-functional fluorescent responses toward Cr(VI) anions, 2,6-dichloro-4-nitroaniline pesticide, and nitrofuran antibiotic in aqueous media with high sensitivity, selectivity, and excellent recyclable behaviors with the detection limits (LODs) are 235 ppb for CrO anion, 343 ppb for CrO anion, 112 ppb for DCN pesticide, 62 ppb for NFT antibiotic for CP 1, and 173 ppb for CrO anion, 270 ppb for CrO anion, 638 ppb for DCN pesticide, 184 ppb for NFT antibiotic for CP 2, respectively. Besides, the mechanisms of luminescence quenching were revealed from the viewpoint of internal filter effect (IFE) and photoinduced electron transfer (PET).
通过混合配体策略设计了两种三元镉（II）配位聚合物，化学式分别为{[Cd(tptc)(bpz)(H₂O)]·0.5H₂O}（CP 1）和[Cd(tptc)(bpy)]（CP 2）。得益于优异的化学稳定性和发光性能，两种镉（II）配位聚合物在水性介质中对Cr(VI)阴离子、2,6-二氯-4-硝基苯胺农药和硝基呋喃抗生素具有高效的多功能荧光响应，具有高灵敏度、高选择性以及优异的可循环使用性能，CP 1对Cr₂O₇²⁻阴离子的检测限（LOD）为235 ppb，对CrO₄²⁻阴离子为343 ppb，对DCN农药为112 ppb，对NFT抗生素为62 ppb；CP 2对Cr₂O₇²⁻阴离子的检测限为173 ppb，对CrO₄²⁻阴离子为270 ppb，对DCN农药为638 ppb，对NFT抗生素为184 ppb。此外，从内滤效应（IFE）和光致电子转移（PET）的角度揭示了发光猝灭机制。
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