Synthesis And Properties Of Spirooxazine Photochromic Materials

The21st century is an information age, with the fast development of science and technology and the popularization of computer application, people are having higher and higher demands on data transfer and storage. More rapid development of large capacity of information storage materials has become a hot research topic in the world today, and organic photochromic materials with a high performance are able to meet the requirements.The main content of this paper and the results are generalized as the following several aspects:In Chapter1, recent progress of photochromic materials, especially the application of spirooxazine photochromic materials is reviewed.In Chapter2, two new spirooxazine photochromic materials Spxl and Spx2, basing on different N-substituent groups, have been synthesized,incorporating carbazole group to the designed compounds. After254nm UV light, there is a new absorption peak appeared in the visible area, then the influences of different N-substituent group and solvents on the properties of spirooxazine photochromic materials, such as, thermal decay rate and fatigue resistance, were explored.In Chapter3, introducing tetraphenylethylene into the spirooxazine system as the fluorophore to form a photochromic AIE system. The synthetic method of this new spirooxazine material was investigated in detail. However, after trying several synthetic methods, the target compound can not be obtained owing to the problem in the synthesis of the nitroso compound. So a deep work of photochromic AIE system still need further be investigated.In Chapter4, there is a summarization of this paper.