Learning from Spiropyrans:How to Make Further Developments of Donor-Acceptor Stenhouse Adducts  

作　　者：Yongli Duan Haiquan Zhao Chaoyue Xiong Lijun Mao Dongsheng Wang Yonghao Zheng 

机构地区：[1]School of Optoelectronic Science and Engineering,University of Electronic Science and Technology of China,Jianshe North Road Section 2 No.4,Chengdu,Sichuan 610054,China [2]Institute of Electronic and Information Engineering of UESTC in Guangdong,Zongbu Second Road No.17,Dongguan,Guangdong,523808 China

出　　处：《Chinese Journal of Chemistry》2021年第4期985-998,共14页中国化学（英文版）

基　　金：the financial support from the National Natural Science Foundation of China(61805034);Guangdong Basic and Applied Basic Research Foundation(2019A1515110678);Opening Project of State Key Laboratory of Polymer Materials Engineering(Sichuan University)(Grant No.sklpme2018-4-28).

摘　　要：Donor-acceptor Stenhouse adducts(DASAs)as a species of novel photochromic molecules,have been developing rapidly and attracting broad researchers’sights since 2014.DASAs show visible/near-infrared(NIR)light induced linear-to-cyclic isomerization and heat induced cyclic-to-linear isomerization,therefore they are attractive in photoresponsive hydrogels,drug delivery,cell culturing and tissue engineering.As a series of well-known photoresponsive molecules,spiropyrans(SPs)show similar molecular properties and comparable photoswitching with DASAs.UV light triggers closed-to-open(also known as spirocyclic(SC)-to-merocyanine(MC))isomerization of SPs,while the reversed open-to-closed isomerization occurs under visible light or heat.Light irradiation switches the molecular color,scale,geometry,and polarity of SPs and DASAs reversibly.Since the researches on DASAs are still in the infancy,the chemical structures,isomerization mechanisms and potential applications need to be further investigated and explored.The well-studied SPs have important reference values to the comprehensive developments of DASAs.In the present review,we summarized,compared and discussed SPs and DASAs with regards to their molecular structures,synthesis,photoswitching and applications.We also make our perspective on the developments of DASA in future.

关 键 词：PHOTORESPONSIVE Donor-acceptor Stenhouse adducts SPIROPYRANS Applications ISOMERIZATION 

分 类 号：O62[理学—有机化学]