WANG Kaimin,GU Xiong,YANG Chongfu,et al.Synthesis and fluorescence properties of Cd (Ⅱ) complexes constructed with mixed ligands[J].Acta Scientiarum Naturalium Universitatis Sunyatseni,2024,63(03):113-118.
WANG Kaimin,GU Xiong,YANG Chongfu,et al.Synthesis and fluorescence properties of Cd (Ⅱ) complexes constructed with mixed ligands[J].Acta Scientiarum Naturalium Universitatis Sunyatseni,2024,63(03):113-118. DOI: 10.13471/j.cnki.acta.snus.ZR20230027.
Synthesis and fluorescence properties of Cd (Ⅱ) complexes constructed with mixed ligands
O} was constructed by self-assembly at room temperature using a mixture of N containing rigid ligand 4,4'- bipyridine (bpy), zwitterionic ligand 4-carboxyl-1- (3-carboxybenzyl) pyridin-1-onium chloride (H
2
LCl) and Cd
2+
using liquid phase diffusion method. The structures and properties of the coordination polymer were analyzed by single crystal X-ray diffraction, Hirshfeld surface and two-dimensional fingerprint, powder X-ray diffraction, thermogravimetry, and solid fluorescence. The results showed that the coordination polymer is a one-dimensional ladder shaped chain composed of [Cd(bpy)
2
] symmetric rod-shaped unit and two parallel ring chain structures. By abundant intermolecular interactions (π···π stacking interactions, O—H···O, and C—H···O hydrogen bonding), the ladder shaped chains penetrate parallel and stack with each other, ultimately forming a stable three-dimensional supramolecular structure. In addition, due to the presence of d
10
metal ions, the coordination polymer exhibits a similar but enhanced light green fluorescence to the ligand H
2
LCl in the wavelength range of 425-466 nm, with CIE coordinates is (0.287 0, 0.334 6).
关键词
配合物晶体结构液相扩散分子间相互作用固体荧光
Keywords
coordination polymercrystal structureliquid phase diffusion methodintermolecular interactionssolid state fluorescence
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