Multi-resonance emitters with room-temperature phosphorescence in amorphous state and excited by visible light
Baoyun Du, Yuliang Wu, Xingdong Wang, Hongkun Tian, Shiyang Shao, Lixiang Wang
Abstract
α-positions exhibiting bathochromatically shifted emissions and longer phosphorescence lifetimes (47.7-119.4 ms) than those with β-position linkages. Given these features, amorphous RTP films with different emission colors and lifetimes are fabricated by dispersing the emitters in a poly(methyl methacrylate) matrix, and their applications in multi-color anti-counterfeiting are presented. These findings thus open a way to develop multi-resonance emitters as a new family of pure organic RTP materials that can work in an amorphous state and under visible-light excitation.
Topics & Concepts
PhosphorescenceExcited stateAmorphous solidMaterials sciencePhotochemistryResonance (particle physics)OptoelectronicsVisible spectrumState (computer science)Atomic physicsChemistryOpticsPhysicsFluorescenceComputer scienceOrganic chemistryAlgorithmOrganic Light-Emitting Diodes ResearchLuminescence and Fluorescent MaterialsPhotoreceptor and optogenetics research