Research Advances in Helicene Structure-Based Chiral Luminescent Materials and Their Circularly Polarized Electroluminescence  

作　　者：Xu-Feng Luo Jie He Yang Wang Hong Dai Zheng-Guang Wu 

机构地区：[1]School of Chemistry and Chemical Engineering,Nantong University,Nantong,Jiangsu 226019,China [2]College of Material Science and Chemical Engineering,Ningbo University of Technology,Ningbo,Zhejiang 315211,China

出　　处：《Chinese Journal of Structural Chemistry》2022年第12期70-79,共10页结构化学（英文）

基　　金：National Natural Science Foundation of China(No.22005158);Program of High Level Talents(Nos.03083064 and JSSCBS20211122);Large Instruments Open Foundation of Nantong University.

摘　　要：Benefited from direct generation of circularly polarized(CP) emission with tunable colors, high efficiencies and facile device architectures, CP organic light-emitting diodes(CP-OLEDs) have attracted great attention and are expected to meet industrial applications. Particularly, CP electroluminescence(CPEL) originated from CP-OLEDs has wide potential applications in 3D displays, optical information storage, quantum communication, and biological sensors. The diverse design strategies of chiral luminescent materials for CP-OLEDs, including small organic emitters, lanthanide and transition-metal complexes and conjugated polymers, have been extensively explored. Helicene with twisted extended π-conjugated molecular structure could exhibit special helical chirality and excellent circularly polarized luminescence properties, which has been employed as the ingenious chirality core for constructing efficient chiral luminescent materials. In addition, significant improvements have been made in terms of CP photoluminescence research, however, the development of CPEL with more application prospects in optoelectronic technology still lags behind. In this review, we systematically summarize the recent advances in chiral luminescent materials based on helicene structure and their CPEL properties, including helicene-based chiral fluorescence molecules, transition metal complexes and thermally activated delayed fluorescence molecules, and discuss current challenges and future perspectives for this hot research field. We believe this progress report will provide a promising perspective of OLEDs based on helicene emitters with CPEL properties for extensive researchers, including chemical, physical and material scientists in different disciplinary fields and attract them to this rapidly developing field.

关 键 词：HELICENE circularly polarized luminescence circularly polarized electroluminescence chiral luminescent material thermally activated delayed fluorescence 

分 类 号：TB34[一般工业技术—材料科学与工程] TN20[电子电信—物理电子学]