四种新型 D-A 型 Zn(ii) 配合物的晶体结构、红移发光和碘阴离子识别性能。
Crystal structures, red-shifted luminescence and iodide-anion recognition properties of four novel D-A type Zn(ii) complexes.
机构信息
Key Laboratory of Clusters Science of Ministry of Education, School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing, 100081, P. R. China.
Analysis and Testing Center, Beijing Institute of Technology, Beijing, 100081, P. R. China.
出版信息
Dalton Trans. 2020 Apr 7;49(14):4358-4368. doi: 10.1039/c9dt04840e.
Four D-A type Zn(ii) coordination complexes, [Zn(C29H29N3O2)·(CH3OH)]·(CH3OH) (1), Zn2(C74H90N6O4)·(CH3OH) (2), [Zn(C30H28N4O2)·(CH3OH)]·(CH3OH) (3) and [Zn(C38H44N4O2)·(C2H5OH)]·(C2H5OH) (4), were designed, synthesized, and studied. Their fluorescence properties in the solid state and in THF solution were comprehensively analysed based on their single-crystal structures. The results showed that the red-shift of fluorescence emission from complexes 1 to 4 was successfully achieved via the strategy of enhancing intramolecular charge transfer (ICT) effects by increasing the number of electron-pulling and pushing groups gradually. Meanwhile, because of the fluorescence recognition abilities of these four complexes towards iodide anions in THF, they could be regarded as potential fluorescent sensors for I- in this organic solution in the future.
四种 D-A 型 Zn(ii)配位化合物，[Zn(C29H29N3O2)·(CH3OH)]·(CH3OH)（1）、Zn2(C74H90N6O4)·(CH3OH)（2）、[Zn(C30H28N4O2)·(CH3OH)]·(CH3OH)（3）和[Zn(C38H44N4O2)·(C2H5OH)]·(C2H5OH)（4），被设计、合成并进行了研究。基于它们的单晶结构，全面分析了它们在固态和 THF 溶液中的荧光性质。结果表明，通过逐步增加电子拉推基团的数量来增强分子内电荷转移（ICT）效应，成功实现了从配合物 1 到 4 的荧光发射红移。同时，由于这四个配合物对 THF 中碘离子的荧光识别能力，它们在未来可能被视为该有机溶液中 I-的潜在荧光传感器。
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