光致变色吡啶三嗪鎓盐配体的合成和晶体结构
Synthesis and Crystal Structure of Photochromic Ligand Based on Pyridinium Triazine
DOI: 10.12677/JOCR.2018.64014, PDF,    科研立项经费支持
作者: 李筱涵, 李小菊：福建师范大学，化学与材料学院，福建 福州；蔡丽璇*：中国科学院海西研究院，福建物质结构研究所，福建 福州
关键词: 吡啶鎓盐；晶体结构；光致变色；Pyridinium Triazine； Crystal Structure； Photochromism
摘要: 本文通过1,3,5-三(4-吡啶)-2,4,6-三嗪(TPT)三齿三角配体与对溴甲基苯甲酸的亲核取代设计合成了一例三取代吡啶鎓盐分子，并对其进行核磁、红外光谱和单晶X-射线衍射分析等结构表征。采用溶液挥发法得到的单晶结构分析表明，该配体属于正交晶系，空间群为Fdd2。该化合物具有良好的光致变色性能，通过光照前后的电子自旋共振光谱测试，发现光照后的样品出现强的吡啶鎓盐特征自由基顺磁信号(g = 2.0039)。
Abstract: We reported a pyridinium triazine ligand 1 synthesized from 2,4,6-tris(4-pyr-idyl)-1,3,5-triazine (TPT)with 4-(bromomethyl)benzoic acid. The structure of the ligand was then determined by NMR, IR spectra as well as X-ray crystallographic analysis. Colorless single crystals, suitable for X-ray crystallography, were obtained by solvent evaporation method. The compound crystallizes in or-thorhombic space group Fdd2. The photochemistry of the compound was also investigated, which showed that the compound displayed good photochromic behaviors upon irradiation. From the ESR study, a single resonance at g = 2.0039 was observed after irradiation, which was ascribed to the formation of pyridinium radicals.
文章引用：李筱涵, 李小菊, 蔡丽璇. 光致变色吡啶三嗪鎓盐配体的合成和晶体结构[J]. 有机化学研究, 2018, 6(4): 95-101. https://doi.org/10.12677/JOCR.2018.64014

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