含ESIPT染料的光开关多色荧光聚合物纳米粒子  

Study of ESIPT Dyes-based Photoswitchable Multicolor Fluorescent Polymeric Nanoparticles

作　　者：李钰琪 张玉彬 唐佳 姜佳伟 林众 陈建[1] LI Yuqi;ZHANG Yubin;TANG Jia;JIANG Jiawei;LIN Zhong;CHEN Jian(School of Chemistry and Chemical Engineering,Hunan University of Science and Technology,Xiangtan 411201,China)

机构地区：[1]湖南科技大学化学化工学院,湖南湘潭411201

出　　处：《湖南科技大学学报（自然科学版）》2023年第4期103-110,共8页Journal of Hunan University of Science And Technology：Natural Science Edition

基　　金：国家自然科学基金资助项目(52273206);湖南省杰出青年科学基金资助项目(2021JJ10029)。

摘　　要：采用一步细乳液聚合法,将激发态分子内质子转移(ESIPT)荧光染料给体4-甲基苯胺基苯并噻唑(ABT)和4-甲基苯酚基苯并噻唑(HBT)与光致变色受体2-(3′,3′-二甲基-6-硝基螺[苯并吡喃-2,2′-吲哚啉]-1′-基)辛基-甲基丙烯酸酯(SP8MA)引入单个聚合物纳米粒子中,合成一系列基于荧光共振能量转移(FRET)的新型光开关多色荧光聚合物纳米粒子.在365 nm紫外光和525 nm可见光的交替照射下,通过选择性发生给受体间的FRET,聚合物纳米粒子表现出多色及可开关调控和可区分的荧光发射信号.该纳米粒子在信息加密、动态防伪等方面有着潜在的利用价值.By introducing two of the excited-state intramolecular proton transfer(ESIPT)fluorescent donor:4-methylphenol-benzothiazole(HBT)and 4-methylanilinyl-benzothiazole(ABT),and photochromic acceptor:2-(3′,3′-dimethyl-6-nitrospiro[benzopyran-2,2′-indoline]-1′-yl)octyl-methacrylate(SP8MA)into nanoparticles,a series of novel photoswitchable multicolor fluorescent polymeric nanoparticles based on fluorescence resonance energy transfer(FRET)principle are synthesized via one-step miniemulsion polymerization method.Upon alternatively irradiating by 365 nm UV and 525 nm visible light,the process of fluorescence resonance energy transfer selectively occurs between donors and receptor,the polymeric nanoparticles show multicolor and switchable,distinguishable fluorescent emission signals.The nanoparticles exhibit potential use value in information encryption,dynamic anti-counterfeiting,etc.

关 键 词：光开关 荧光能量共振转移 聚合物荧光纳米粒子 信息加密 

分 类 号：TQ317[化学工程—高聚物工业] O632[理学—高分子化学]