Long-Persistent Circularly Polarized Luminescence from a Host-Guest System Regulated by the Multiple Roles of a Gold(I)-Carbene Motif

Yu, Fei-Hu1,2,6; Jin, Rui3; Chang, Xiaoyong4; Li, Kai5; Cui, Ganglong3; Chen, Yong1,2,6

2023-10-01

10.1002/anie.202312927

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION   Impact Factor & Quartile

1433-7851

1521-3773

The promotion of intersystem crossing (ISC) is critical for achieving a high-efficiency long-persistent luminescence (LPL) from organic materials. However, the use of a transition-metal complex for LPL materials has not been explored because it can also shorten the emission lifetime by accelerating the phosphorescence decay. Here, we report a new class of LPL materials by doping a monovalent Au-carbene complex into a boron-embedded molecular host. The donor-acceptor systems exhibit photoluminescence with both high efficiencies (>57 %) and long lifetimes (ca. 40 ms) at room temperature. It is revealed that the Au atom promotes the population of low-lying triplet excited states of the host aggregate (T-1*) which can be converted into the charge-transfer (CT) state, thereby resulting in afterglow luminescence. Moreover, the use of a chirality unit on the guest molecule results in the LPL being circularly polarized. This work illustrates that transition-metal complexes can be used for developing organic afterglow systems by exquisite control over the excited state mechanism.

Charge Transfer Heavy Atom Effect Host-Guest System Long-Persistent Luminescence Spin-Orbit Coupling

SCI

English

NI Journal Papers

Others

This work is supported by the Natural Science Foundation of China (22175191, 21971250 and 22271196). Y.C. thanks the financial support from CAS-Croucher Funding Scheme for Joint Laboratories and Beijing Municipal Science amp; Technology Commission (Z21110["22175191","21971250","22271196"] ; Natural Science Foundation of China[Z211100007921020] ; Beijing Municipal Science amp; Technology Commission[2019QN01C617]

Chemistry

Chemistry, Multidisciplinary

WOS:001083364200001

WILEY-V C H VERLAG GMBH

CHEMISTRY

Web of Science

1.Chinese Acad Sci, Tech Inst Phys & Chem, Key Lab Photochem Convers & Optoelect Mat, Beijing 100190, Peoples R China
2.Chinese Acad Sci, Tech Inst Phys & Chem, CAS HKU Joint Lab New Mat, Beijing 100190, Peoples R China
3.Beijing Normal Univ, Chem Coll, Minist Educ, Key Lab Theoret & Computat Photochem, Beijing 100875, Peoples R China
4.Southern Univ Sci & Technol, Dept Chem, Shenzhen 518055, Peoples R China
5.Shenzhen Univ, Coll Mat Sci & Engn, Shenzhen Key Lab New Informat Display & Storage Ma, Shenzhen 518055, Peoples R China
6.Univ Chinese Acad Sci, Beijing 100049, Peoples R China

Yu, Fei-Hu,Jin, Rui,Chang, Xiaoyong,et al. Long-Persistent Circularly Polarized Luminescence from a Host-Guest System Regulated by the Multiple Roles of a Gold(I)-Carbene Motif[J]. ANGEWANDTE CHEMIE-INTERNATIONAL EDITION,2023.

Yu, Fei-Hu,Jin, Rui,Chang, Xiaoyong,Li, Kai,Cui, Ganglong,&Chen, Yong.(2023).Long-Persistent Circularly Polarized Luminescence from a Host-Guest System Regulated by the Multiple Roles of a Gold(I)-Carbene Motif.ANGEWANDTE CHEMIE-INTERNATIONAL EDITION.

Yu, Fei-Hu,et al."Long-Persistent Circularly Polarized Luminescence from a Host-Guest System Regulated by the Multiple Roles of a Gold(I)-Carbene Motif".ANGEWANDTE CHEMIE-INTERNATIONAL EDITION (2023).