Information security protection has become a fundamental issue in the human life,national security,and social stability,which is enabled through the use of multi-responsive materials.Ideal multi-responsive materials a...Information security protection has become a fundamental issue in the human life,national security,and social stability,which is enabled through the use of multi-responsive materials.Ideal multi-responsive materials are operated with visible to near infrared light,exhibit large separation of absorption bands,and are functional by isomerization,posing an unmet challenge.Here,a series of visible-light-operatedmolecular photoswitches,(E)-1-acetyl-2-((4-(diphenylamino)phenyl)imino)indolin-3-one,and its derivatives(PIO-01/02/03/04/05),featuring near-infrared second aggregation-induced emission(AIE)and impressive acid/basedriven switching,are constructed via twisted intramolecular charge transfer(TICT)and subsequent E/Z isomerization strategies.In addition,protonation not only endows these molecules with large separation(Δλ_(max))of over 100 nm,but also can be used as second independent input altering the light response.Based on calculation studies and advanced spectroscopic techniques,we provide the intricate interplay of the switching behavior of PIO-01/02/03/04/05 on their photochemical properties.The optimized compound PIO-01 shows significant applications in multi-color,multi-patterning display,transient information recording and erasing,and dual-mode encryption-decryption with ternary code.展开更多
基金supported by the Science and Technology Plan Projects of Guangxi Province(2024GXNSFAA010360 and AD22035156)National Natural Science Foundation of China(22265006,U23A20594,22375066 and 52333007)National Key Research and Development Program of China(2023YFB3810001).
文摘Information security protection has become a fundamental issue in the human life,national security,and social stability,which is enabled through the use of multi-responsive materials.Ideal multi-responsive materials are operated with visible to near infrared light,exhibit large separation of absorption bands,and are functional by isomerization,posing an unmet challenge.Here,a series of visible-light-operatedmolecular photoswitches,(E)-1-acetyl-2-((4-(diphenylamino)phenyl)imino)indolin-3-one,and its derivatives(PIO-01/02/03/04/05),featuring near-infrared second aggregation-induced emission(AIE)and impressive acid/basedriven switching,are constructed via twisted intramolecular charge transfer(TICT)and subsequent E/Z isomerization strategies.In addition,protonation not only endows these molecules with large separation(Δλ_(max))of over 100 nm,but also can be used as second independent input altering the light response.Based on calculation studies and advanced spectroscopic techniques,we provide the intricate interplay of the switching behavior of PIO-01/02/03/04/05 on their photochemical properties.The optimized compound PIO-01 shows significant applications in multi-color,multi-patterning display,transient information recording and erasing,and dual-mode encryption-decryption with ternary code.
