Three-primary-color molecular cocrystals showing white-light luminescence,tunable optical waveguide and ultrahigh polarized emission

作     者：Shuzhen Li Yan Hao Shuai Guo Chunjie Ding Yujuan Ma Ruibin Liu Dongpeng Yan Shuzhen Li;Yan Hao;Shuai Guo;Chunjie Ding;Yujuan Ma;Ruibin Liu;Dongpeng Ya

作者机构：Beijing Key Laboratory of Energy Conversion and Storage MaterialsCollege of ChemistryBeijing Normal UniversityBeijing 100875China Beijing Key Lab of Nanophotonics and Ultrafine Optoelectronic SystemsSchool of PhysicsBeijing Institute of TechnologyBeijing 100081China College of Chemistry and Molecular EngineeringZhengzhou UniversityZhengzhou 450001China 

出 版 物：《Science China Chemistry》 (中国科学（化学英文版）)

年 卷 期：2022年第65卷第2期

页      面：408-417页

核心收录：

学科分类：081702[工学-化学工艺] 07[理学] 08[工学] 0817[工学-化学工程与技术] 070205[理学-凝聚态物理] 0703[理学-化学] 0702[理学-物理学] 

基　　金：supported by the National Natural Science Foundation of China(21771021,21822501,22061130206) the Beijing Municipal Natural Science Foundation(JQ20003) the Newton Advanced Fellowship award(NAFR1201285) the Fok Ying-Tong Education Foundation(171008) the Measurements Fund of Beijing Normal University the State Key Laboratory of Heavy Oil Processing。 

主　　题：three-primary-color emission molecular crystal white light optical waveguide polarized luminescence 

摘      要：Three-primary-color luminescent materials are highly desirable to construct white-light emitting resource,multi-color optical displays,and tunable photonic applications.However,the efficient strategy to establish the three-primary-color systems with unique photofunctionalities is still rather limited,particularly for molecular materials.Herein,we developed a molecular cocrystal route to obtain three-primary-color emissive materials by tuning different donor-acceptor units based on the same chromophore(4,4′-bis(2,5-dimethylstyryl)biphenyl,Bdb).The warm and cold white-light together with multi-color emission in most of visible region can be highly adjusted by rationally tuning different mixture components of three-primary-color cocrystals through an energy transfer mechanism.Furthermore,the blue/green/red emitters endow Bdb molecular cocrystals novel colortunable photonic properties(such as one-dimensional(1D)/2D optical waveguide,polarized fluorescence,up-conversion luminescence,and amplified spontaneous emission),benefitting from their well-defined micro/nanostructures and high crystallinity.Particularly,the high luminescence quantum yield(82.49%)and polarized anisotropy(0.723)outperform most of state-ofthe-art molecular crystalline materials.Therefore,this work supplies an effective way to fabricate new types of three-primarycolor phosphors through luminescent cocrystals,which have promising applications in the fields of full-color displays,whitelight irradiation,low-dimensional optical polarization,and micro/nanophotonics.