题目：

A Dislocated Twin-Locking Acceptor-Donor-Acceptor Configuration for Efficient Delayed Fluorescence with Multiple Through-Space Charge Transfer

作者：

Feng-Ming Xie^1,#, Hao-Ze Li^2,#, Kai Zhang^3,#, Yang Shen¹, Xin Zhao⁴, Yan-Qing Li,^2,* Jian-Xin Tang^1,3,*

单位：

¹Institute of Functional Nano & Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices Soochow University Suzhou, Jiangsu 215123, P. R. China

²School of Physics and Electronic Science, Ministry of Education Nanophotonics & Advanced Instrument Engineering Research Center, East China Normal University

Shanghai 200062 (P. R. China)

³Macau Institute of Materials Science and Engineering (MIMSE), Faculty of Innovation Engineering, Macau University of Science and Technology, Taipa, Macau SAR 999078 (P. R. China)

⁴School of Chemistry and Life Sciences, Suzhou University of Science and Technology, Suzhou, Jiangsu 215009 (P. R. China)

摘要：

Organic materials featuring intramolecular through-space charge transfer (TSCT) excited states are advantageous for efficient thermally activated delayed fluorescence (TADF), while the realization of multiple TSCT systems remains challenging. Herein, a rigid molecule with three-dimensional dislocated sandwich acceptor-donor-acceptor configuration has been developed by linking bi-phenazines (2PXZ) donor and 2,4,6-triphenyl-1,3,5-triazine (TRZ) acceptor via twin-locking of two spiro-fluorene bridges. The twin-locking construction with multiple TSCT effects suppresses the intramolecular rotations of various segments in 2PXZ-2TRZ, leading to a small singlet-triplet energy difference, fast reverse intersystem crossing process, and high photoluminescence quantum yield. This material simultaneously possesses the capabilities of TADF and aggregation-induced emission. The device employing 2PXZ-2TRZ as dopant displays an optimal external quantum efficiency of 27.1% and low efficiency roll-off.

影响因子：

15.336

分区情况：

一区

链接：

https://doi.org/10.1002/anie.202213823