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引用本文:   孔怡, 曾梓晖, 黄萍, 罗野林, 张保华, 陈丽娟, 张玉微, 韩冬雪, 程延祥, 牛利. 热辅助延迟荧光共轭高分子实现多种模式的电化学发光. 分析化学, 2021, 49(6): 1015-1024. doi:  10.19756/j.issn.0253-3820.210424 [复制]

Citation:   KONG Yi , ZENG Zi-Hui , HUANG Ping , LUO Ye-Lin , ZHANG Bao-Hua , CHEN Li-Juan , ZHANG Yu-Wei , HAN Dong-Xue , CHENG Yan-Xiang , NIU Li . Multiple Modes of Electrochemiluminescence Using Thermally Activated Delayed Fluorescent Polymer. Chinese Journal of Analytical Chemistry, 2021, 49(6): 1015-1024. doi: 10.19756/j.issn.0253-3820.210424 [复制]

热辅助延迟荧光共轭高分子实现多种模式的电化学发光

通讯作者:  张保华, ccbhzhang@gzhu.edu.cn; 韩冬雪, dxhan@gzhu.edu.cn; 牛利, lniu@gzhu.edu.cn

收稿日期: 2021-04-09

基金项目: 广东省自然科学基金项目(Nos.2019B010933001,2021A1515010510)和国家自然科学基金项目(No.51773195)资助。

Multiple Modes of Electrochemiluminescence Using Thermally Activated Delayed Fluorescent Polymer

Corresponding author:  ZHANG Bao-Hua , ccbhzhang@gzhu.edu.cn; HAN Dong-Xue , dxhan@gzhu.edu.cn; NIU Li , lniu@gzhu.edu.cn

Received Date:  2021-04-09

Fund Project:  Supported by the Natural Science Foundation of Guangdong Province, China (Nos.2019B010933001, 2021A1515010510) and the National Natural Science Foundation of China (No.51773195).

热辅助延迟荧光(Thermally activated delayed fluorescent,TADF)发光材料是新型的纯有机电化学发光(Electrochemiluminescence,ECL)材料,具有合成简便、不含贵金属、生物相容性好、颜色易调节、发光效率高等优势。与传统的荧光有机材料只能利用单线态发光相比,TADF发光材料基于热活化性质,能发生快速、高效的反向系间窜越,使得三线态激子向单线态激子发生有效上转换,实现暗态三线态激子的辐射复合利用。TADF型ECL发光材料能够克服自旋禁阻效应,有望实现近100%的ECL发光效率。但目前尚未有实现全部典型模式下的ECL行为的TADF型ECL的体系材料。本研究基于一种高效的TADF共轭高分子材料,实现了全部典型的ECL发光模式(包括湮灭式、阶跃式、阳极共反应剂式和阴极共反应剂式),特别是通过优化TADF高分子电极制备条件和共反应剂用量,获得了有效的阴极共反应剂式ECL。对此TADF高分子的光物理特征、电化学和电化学发光性质进行了系统研究,与传统荧光高分子的ECL效率进行对比,证明了TADF高分子在电极修饰型ECL研究中,实现高ECL发光效率的潜在优势。

关键词:   电化学发光, 热辅助延迟荧光, 共反应剂型电化学发光, 电化学, 三线态激子
Key words:   Electrochemiluminescence, Thermally activated delayed fluorescence, Co-reactant electrochemiluminescence, Electrochemistry, Triplet excitons
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目录

热辅助延迟荧光共轭高分子实现多种模式的电化学发光

孔怡, 曾梓晖, 黄萍, 罗野林, 张保华, 陈丽娟, 张玉微, 韩冬雪, 程延祥, 牛利

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