新型双螺噁嗪分子的合成及性能

设计合成了3个双螺噁嗪化合物, 采用核磁共振谱、红外光谱和高分辨质谱对这些化合物进行了表征. 测试了光照前后化合物在不同溶剂中的紫外吸收光谱、荧光光谱以及在高分子薄膜中的消色动力学曲线. 结果表明, 目标化合物均具有良好的光致变色性能和耐疲劳度, 在材料、分子开光及生物探针领域有潜在的应用前景.

Synthesis and Properties of Novel Photochromic Bispirooxazine

At present,the photochromic compounds in terms of molecular switches have attracted much attention of many researchers.As an important class of molecular switch system,spirooxazines have gradually aroused widespread concern.The common single spirooxazines have defects such as lack of coordination position,weak affinity between the molecules,poor molecule recognition selectivity,and low sensitivity.On the contrary,bispirooxazines have the advantages of more coordination position,stronger affinity between the molecules,higher molecule recognition selectivity,and higher sensitivity.In this paper,a series of bispirooxazines was designed,synthesized and characterized by 1H NMR,13C NMR,IR as well as HRMS.The photochromic properties of compounds 5a—5c in different solutions(trichloromethane,dichloromathane and cyclohexane) and polymer films(PMMA and PVB) were studied with the aid of UV absorption spectrometry.The thermal decay process of the compounds 5a—5c in different polymer films were recorded and analyzed and the kinetic process were fitted and discussed.The results show that these compounds have good photochromic properties and favorable fatigue resistance.These properties are helpful for their potential use in material,molecular switch and biological probe area.