基于氰基苯乙烯衍生的四苯乙烯给体的超分子连续光捕获系统的构筑和应用  

A cyanostilbene-derived tetraphenylethylene based donor for constructing supramolecular sequential light-harvesting systems and their application

作　　者：张巧娜 陈邓立 肖唐鑫 王乐勇[2] Qiaona Zhang;Dengli Chen;Tangxin Xiao;Leyong Wang(Jiangsu Key Laboratory of Advanced Catalytic Materials and Technology,School of Petrochemical Engineering,Changzhou University,Changzhou 213164,China;Key Laboratory of Mesoscopic Chemistry of Ministry of Education,School of Chemistry and Chemical Engineering,Nanjing University,Nanjing 210023,China)

机构地区：[1]江苏省绿色催化材料与技术重点实验室,常州大学石油化工学院,常州213164 [2]介观化学教育部重点实验室,南京大学化学化工学院,南京210023

出　　处：《中国科学:化学》2025年第2期505-513,共9页SCIENTIA SINICA Chimica

基　　金：国家自然科学基金(编号:21702020);江苏省研究生科研与实践创新计划(编号:KYCX24_3184)资助项目。

摘　　要：自然界光合作用组织中的光捕获系统表现出高效的能量吸收和转移功能,启发了人们开发各种纳米载体平台和能量转移策略来模仿这一自然现象.在本研究中,我们设计并合成了一种氰基苯乙烯衍生的四苯乙烯分子(TCP),它同时包含一个亲水的吡啶盐基团.TCP不仅在水溶液中自组装形成纳米颗粒,而且结合了四苯乙烯和氰基苯乙烯的结构特点及其聚集诱导发光(AIE)特性,表现出强烈的绿色荧光发射.依次将市售染料曙红Y(ESY)和磺酰罗丹明101(SR101)掺入纳米颗粒中作为中继能量受体和最终受体,来自给体TCP的激发能可以有效地经由ESY转移到SR101上,实现了87.8%的总能量转移效率.最后,将制备的光捕获纳米颗粒应用于发光二极管(LED)器件中,实现了颜色可调的发光.这项工作展示了在分子和超分子层面对发光材料进行调控的策略,构建了高效的连续光捕获系统,在制造明亮的可调发光材料方面具有巨大潜力.The light-harvesting system in natural photosynthesis exhibits efficient energy absorption and transfer,which has inspired the development of various nanocarrier platforms and energy transfer strategies to mimic this natural phenomenon.In this study,we designed and synthesized a cyanostilbene-derived tetraphenylethylene molecule(TCP)that also contains a hydrophilic pyridinium salt group.TCP self-assembles into nanoparticles in aqueous solution,combining the structural characteristics of tetraphenylethylene and cyanostilbene and their aggregation-induced emission(AIE)properties,and exhibits strong green fluorescence.By incorporating the commercially available dyes eosin Y(ESY)and sulforhodamine 101(SR101)as the relay acceptor and the final acceptor into the nanoparticles respectively,the excitation energy from the donor TCP can be efficiently transferred to SR101,achieving a total energy transfer efficiency of 87.8%.Finally,the prepared light-harvesting nanoparticles were applied to light-emitting diode(LED)devices to achieve color-tunable luminescence.This work demonstrates a strategy to regulate luminescent materials at the molecular and supramolecular levels,constructs an efficient light-harvesting system,and has great potential in the manufacture of bright and tunable luminescent materials.

关 键 词：光捕获系统 超分子自组装 四苯基乙烯 氰基苯乙烯 聚集诱导发光 

分 类 号：TP3[自动化与计算机技术—计算机科学与技术]