Dual-Phase Thermally Activated Delayed Fluorescence Luminogens: A Material for Time-Resolved Imaging Independent of Probe Pretreatment and Probe Concentration

被引：52
|
作者：
Li, Xuping [1 ,2 ]
Baryshnikov, Gleb [3 ]
Ding, Longjiang [4 ]
Bao, Xiaoyan [2 ]
Li, Xin [3 ]
Lu, Jianjun [1 ]
Liu, Miaoqing [1 ]
Shen, Shen [2 ]
Luo, Mengkai [2 ]
Zhang, Man [2 ]
Agren, Hans [3 ,5 ]
Wang, Xudong [4 ]
Zhu, Liangliang [2 ]
机构：
[1] Taiyuan Univ Technol, Key Lab Coal Sci & Technol, Minist Educ & Shanxi Prov, Taiyuan 030024, Peoples R China
[2] Fudan Univ, State Key Lab Mol Engn Polymers, Dept Macromol Sci, Shanghai 200438, Peoples R China
[3] KTH Royal Inst Technol, Sch Biotechnol, Div Theoret Chem & Biol, S-10691 Stockholm, Sweden
[4] Fudan Univ, Dept Chem, Shanghai 200438, Peoples R China
[5] Henan Univ, Dept Chem, Coll Chem & Chem Engn, Kaifeng 475004, Henan, Peoples R China
来源：
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION | 2020年 / 59卷 / 19期
关键词：
dual-phase emission; imaging agents; luminescence; self-assembly; thermally activated delayed fluorescence; AGGREGATION-INDUCED EMISSION; LIGHT-EMITTING-DIODES; EFFICIENCY; RIGIDITY; DESIGN; BRIGHT; DOTS;
D O I：
10.1002/anie.202000185
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
Developing luminescent probes with long lifetime and high emission efficiency is essential for time-resolved imaging. However, the practical applications usually suffer from emission quenching of traditional luminogens in aggregated states, or from weak emission of aggregation-induced emission type luminogens in monomeric states. Herein, we overcome this dilemma by a rigid-and-flexible alternation design in donor-acceptor-donor skeletons, to achieve a thermally activated delayed fluorescence luminogen with high emission efficiency both in the monomeric state (quantum yield up to 35.3 %) and in the aggregated state (quantum yield up to 30.8 %). Such a dual-phase strong and long-lived emission allows a time-resolved luminescence imaging, with an efficiency independent of probe pretreatment and probe concentration. The findings open opportunities for developing luminescent probes with a usage in larger temporal and spatial scales.
引用
收藏
页码：7548 / 7554
页数：7
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