高效发光的吡啶嗡盐基单组份白光发射材料的研究  

Study of pyridinium salt-based single component white light emitter with high luminous efficiency

作　　者：马骁 周明月 贾玲 MA Xiao;ZHOU Mingyue;JIA Ling(School of Petrochemical Engineering, Changzhou University, Changzhou 213164, China)

机构地区：[1]常州大学石油化工学院,江苏常州213164

出　　处：《功能材料》2022年第4期4182-4186,4192,共6页Journal of Functional Materials

基　　金：江苏省自然科学基金青年基金项目(BK20170290);江苏省教育厅面上项目(17KJB150002);常州大学科研基金项目(ZMF17020036)。

摘　　要：发展合成上简单、高发光效率的单组份有机白光发射材料具有重要的科学意义,但极具挑战性。以4′-(4-吡啶基)-2,2′:6′,2″-三联吡啶为原料,设计合成了一个简单且高发光效率的吡啶嗡盐基单组份白光发射材料。基于荧光性能研究发现,该材料在365 nm波长激发下呈现的白光量子产率高达22.4%,且该单组份白光发射材料呈现激发波长依赖的发光特性,发光颜色可从白光变为黄光。研究揭示了对阴离子对有机离子化合物的发光性能具有重要影响,调控对离子是改善有机离子化合物光学性能的一个有效策略。鉴于吡啶嗡盐基单组份白光发射材料优异的发光性能,该简单发光材料将可能应用于白光发射器件或作为信息防伪材料。It is important but challenging to develop single component organic white light emitter with high luminous efficiency which is easily synthesized.In this work,a simple pyridinium salt-based single component white light emitter with high luminous efficiency is synthesized from 4′-(Pyridin-4-yl)-2,2′:6′,2″-terpyridine.Based on the measurement of luminescence properties,it is found that this material exhibits nearly pure white light with high quantum yield of up to 22.4%.More interestingly,the single component white light emitter exhibits excitation-dependent color-tunable emission from white light to yellow light.Moreover,this study reveals that the counter anion has an important influence on the emission property of the corresponding organic ionic compound,on the other hand,modifying the counter ion is an effect strategy to enhance the emission property of the organic ionic compound.In view of those good performances,this sample pyridinium salt-based emitter may be applied to white devices or information anti-counterfeit.

关 键 词：白光发射 吡啶嗡盐 量子产率 激发波长 发光材料 

分 类 号：TB322[一般工业技术—材料科学与工程]