Ultrastrong Circularly Polarized Luminescence Triggered by the Synergistic Effect of Chiral Coassembly and Selective Reflective Cholesteric Liquid Crystal Film

IF 9.6 1区化学 Q1 MATERIALS SCIENCE, MULTIDISCIPLINARY

ACS Materials Letters Pub Date : 2024-06-12 DOI:10.1021/acsmaterialslett.4c00782

Jiaxin Luo, Yang Li*, Hang Li, Qihuan Li and Yixiang Cheng*,

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Abstract

Enhancing the dissymmetry factor (g_lum) is crucial for circularly polarized luminescence (CPL) applications. Herein, we present an innovative strategy achieving an ultrastrong |g_lum| of 1.73. This is accomplished through the synergistic effect of coassembly of the CPL-emitting ternary liquid crystal (T-N*-LC, |g_lum| = 0.47) and the selective reflection (λ = 590 nm) of the polymer cholesteric liquid crystal (CLC) within a composite system. Unlike the mismatched chirality combination (|g_lum| = 1.42, ΔFL = 57%), the matched combination demonstrates an ultrastrong CPL signal with a |g_lum| of 1.73 and a low ΔFL of 50% when the CPL direction of the T-N*-LC agrees with the CLC film’s chirality. Furthermore, we alter the matching degree of the composite system by applying a direct-current (DC) electric field to realize the CPL switch. This study paves the way for developing outstanding CPL-active display materials through synergistic amplification of g_lum.

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来源期刊

ACS Materials Letters MATERIALS SCIENCE, MULTIDISCIPLINARY-

CiteScore

14.60

自引率

3.50%

发文量

261

期刊介绍： ACS Materials Letters is a journal that publishes high-quality and urgent papers at the forefront of fundamental and applied research in the field of materials science. It aims to bridge the gap between materials and other disciplines such as chemistry, engineering, and biology. The journal encourages multidisciplinary and innovative research that addresses global challenges. Papers submitted to ACS Materials Letters should clearly demonstrate the need for rapid disclosure of key results. The journal is interested in various areas including the design, synthesis, characterization, and evaluation of emerging materials, understanding the relationships between structure, property, and performance, as well as developing materials for applications in energy, environment, biomedical, electronics, and catalysis. The journal has a 2-year impact factor of 11.4 and is dedicated to publishing transformative materials research with fast processing times. The editors and staff of ACS Materials Letters actively participate in major scientific conferences and engage closely with readers and authors. The journal also maintains an active presence on social media to provide authors with greater visibility.