客体异构化对主客体型有机掺杂晶体余辉颜色的影响  

Effect of Guest Isomerism on Afterglow Color of Organic Host-guest Crystals

作　　者：毛嘉懿 冯文慧 汪天洋 MAO Jiayi;FENG Wenhui;WANG Tianyang(Tianjin Key Laboratory of Molecular Optoelectronic Science,School of Science,Tianjin University,Tianjin 300072,China;Department of Thermal Engineering,Hebei Petroleum University of Technology,Chengde 067000,China)

机构地区：[1]天津市分子光电重点实验室,天津大学理学院,天津300072 [2]河北石油职业技术大学热能工程系,承德067000

出　　处：《高等学校化学学报》2023年第6期163-171,共9页Chemical Journal of Chinese Universities

基　　金：国家自然科学基金(批准号:22178263);天津市自然科学基金(批准号:22JCQNJC00770);河北省高等学校科学技术研究项目(批准号:ZD2022051)资助。

摘　　要：通过磁力搅拌分别使客体材料苯并蒽(BA)与苯并菲(BPT)两种同分异构体均匀地混合在熔融的主体材料4,4′-二甲基二苯甲酮(2MBP)中,构建了两种主客体掺杂型晶体材料2MBP:BA及2MBP:BPT.研究发现,由于主客体之间的Förster能量转移性能差异,两种晶体呈现出明显的余辉颜色不同.通过客体分子结构的改变,实现了从绿色余辉向红色余辉的转变,并获得了时间长达2 s的深红色余辉(2MBP:BA).利用余辉颜色的差异,构建了一种新颖的基于ASCII二进制码的双色微阵列用于信息加密,体现出此类长余辉材料的独特性能优势.High-performance organic long-persistent luminescence materials(OLPLMs)have potential applications in information storage,anti-counterfeiting,photodynamic therapy,etc.However,due to the limitation of the energy gap law,there are few studies on preparation of red afterglow materials.Herein,two kinds of host-guest doped-crystals 2MBP:BA and 2MBP:BPT were constructed by mixing the two isomers of benzanthracene(BA)and triphenylene(BPT)into the molten host material 4,4′-dimethylbenzophenone(2MBP)through magnetic stirring,respectively.Taking advantage of the difference of both doped-crystals in Förster energy transfer between the host and guest,the distinct afterglow colors were exhibited.By changing the structure of the guest molecule,the transition from green afterglow to red afterglow was realized,and a deep red afterglow(2MBP:BA)lasting for 2 s was obtained.Moreover,utilizing the difference of afterglow color,a novel two-color microarray based on ASCII binary code was constructed for information encryption,reflecting the unique performance advantages of this kind of OLPLMs.

关 键 词：红色有机长余辉 同分异构体 主客体掺杂 Förster共振能量转移 信息保护 

分 类 号：O641.3[理学—物理化学]