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Photochromic Dimethyldihydropyrene and its Properties of Optical Switches

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ã€Authorã€‘ Feng Changgen 1 ,Wang Jianying 1,2 ,Hu Wenxiang 2( 1 National Key Laboratory for Prevention and Control of Explosive Disasters, Beijing Institute of Technology, Beijing 100081; 2 Military Unit of Epidemic Prevention and Protection, Headquarters of General Equipment, Beijing 100101)

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ã€Abstractã€‘ The special negative photochromic properties of dimethyldihydropyrene and its derivatives are introduced. The paper also discusses how the properties of optical and the switch change with the substituents, spacers and fused groups. The practical applications on photoswitches and photochemical readout of each state are reviewed and the future foreground of photochromic dimethyldihydropyrene are presented.æ›´å¤š è¿˜åŽŸ