Work

Strong Circularly Polarized Electroluminescence Promoted by Using Chiral Co‐Assembled Liquid Crystal Polymers

Year: 2025

Type: article

Abstract: Achieving high circularly polarized electroluminescence (CP‐EL) performance in organic light‐emitting diodes (OLEDs) remains a significant challenge. In this study, chiral nematic liquid crystal polymers (LCPs) are co‐assembled as chiral fluorescent materials by doping 1 wt% chiral binaphthyl‐based R/S‐D inducers into a LCP (P‐PyP), displaying blue circularly polarized luminescence (CPL) signals (|glum| = 0.025, λem = 470 nm, ΦFL = 37%) after thermal annealing at 140 °C. Notably, the resulting chiral LCP films can serve as the emitting layer (EML) in non‐doped OLEDs, and exhibit good CP‐EL emissions (gEL = −0.019/+0.015, λEL = 484 nm). This work demonstrates a pathway for the high CP‐EL performance materials through the chiral co‐assembly of LCPs.

Source: Advanced Optical Materials

DOI: 10.1002/adom.202402426

Authors: Hang Li, Dong Li, Chunya Fu, Yihan Chen, Yixiang Cheng

Institutions: State Key Laboratory of Analytical Chemistry for Life Science, Nanjing University, Jiangsu Normal University

Language: English

Topic: Organic Light-Emitting Diodes Research

Subfield: Electrical and Electronic Engineering

Field: Engineering

Domain: Physical Sciences

Open Access status: bronze

Funder: National Natural Science Foundation of China

Awards: G3457854553, G7620915198, G7733619510