Journal
ADVANCED MATERIALS
Volume 33, Issue 43, Pages -Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/adma.202104002
Keywords
photoactivated phosphorescence; photochromic sunglasses; photochromism; photoresponsive materials; rewritable photopatterning
Categories
Funding
- National Natural Science Foundation of China [21905197]
- Tianjin University
- Tianjin Government, China
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A new photoresponsive system based on triarylamine derivatives is developed, demonstrating adjustable photoresponsive properties like photoactivated phosphorescence and photochromism. The competition between the formations of triplet excitons and cationic radicals under photoirradiation explains the different photoresponsive properties. Various applications, including information encryption and decryption, are successfully realized.
Photoresponsive materials have drawn much attention and are widely applied in daily life for their reversible changes in luminous color or appearance color under light irradiation. In this work, a new photoresponsive system based on triarylamine derivatives is developed. With the changed aryl substituents, adjustable photoresponsive properties, including photoactivated phosphorescence and photochromism after being dispersed into the poly(methyl methacrylate) (PMMA) matrix, are demonstrated. According to the theoretical calculations and experimental data, the competition between the formations of triplet excitons and cationic radicals under photoirradiation should be the main reason for their different photoresponsive properties. Excitingly, the applications of rewritable photopatterning, anticounterfeiting, information encryption, and decryption are realized conveniently, in addition to the successful model of sunglasses to protect eyes away from ultraviolet radiation and strong light in the sunlight. These studies present a simple and efficient design strategy for the development of photoresponsive materials on modulating the phosphorescence and photochromic property.
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