The Progress of Circularly Polarized Luminescence in Chiral Purely Organic Materials

• Published in: Advanced photonics research Vol. 2; no. 4
• Main Authors: Li, Xiaoning, Xie, Yujun, Li, Zhen
• Format: Journal Article
• Language: English
• Published: Hoboken John Wiley & Sons, Inc 01.04.2021; Wiley-VCH
• Subjects: chirality; circularly polarized luminescence; Molecular structure; organic light-emitting diodes; room-temperature phosphorescence; thermally activated delayed fluorescence
• ISSN: 2699-9293; 2699-9293
• DOI: 10.1002/adpr.202000136

Purely organic circularly polarized luminescent (CPL) materials have attracted much attention owing to their fascinating photophysical properties and potential applications in the fields of optical data storage, smart sensors/probers, high‐resolution 3D display, and so on. With the development of photophysical science, the emergence of some novel emission phenomena, such as thermally activated delayed fluorescence (TADF) and room‐temperature phosphorescence (RTP), have become hot topics and enriched CPL materials. However, there is no systematic review that summarizes the recent development of chiral small organic molecules (SOMs) with TADF and RTP characters. In this minireview, the progress of purely organic CPL materials in the last 5 years is reviewed by categorizing into chiral fluorescence molecules, chiral TADF molecules, and chiral RTP molecules. Furthermore, the design strategy of chiral TADF emitters is discussed and the correlation between chirality and RTP properties is concluded. Organic circularly polarized luminescent (CPL) materials are a hot topic due to their fascinating photophysical properties and variously potential applications. In this minireview, the progress of small organic molecules (SOMs) in the past 5 years is introduced, especially the design strategy of circularly polarized thermally activated delayed fluorescence (CP‐TADF) and the relationship of packing‐property of circularly polarized room‐temperature phosphorescence (CP‐RTP).