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When quantum dots meet blue phase liquid crystal elastomers: visualized full-color and mechanically-switchable circularly polarized luminescence

Chemistry

When quantum dots meet blue phase liquid crystal elastomers: visualized full-color and mechanically-switchable circularly polarized luminescence

S. Li, Y. Tang, et al.

Discover how researchers Shan Li, Yuqi Tang, Qingyan Fan, Ziyuan Li, Xinfang Zhang, Jingxia Wang, Jinbao Guo, and Quan Li have pioneered full-color circularly polarized luminescence (CPL) materials using innovative polymer-based techniques. Their work utilizing reconfigurable blue phase liquid crystal elastomers demonstrates remarkable potential in anti-counterfeiting and information encryption applications.

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Playback language: English
Abstract
Polymer-based circularly polarized luminescence (CPL) materials have garnered considerable attention due to their advantages. However, precise CPL tuning remains challenging. This work achieves visualized full-color CPL by doping red, green, and blue quantum dots (QDs) into reconfigurable blue phase liquid crystal elastomers (BPLCES). The BPLCES's chiral 3D cubic superstructure induces an opposite CPL signal compared to cholesteric liquid crystal elastomers (CLCEs), independent of photonic bandgaps (PBGs). Mechanical stretching reversibly switches the CPL signals, further fixable using dynamic disulfide bonds. Applications in anti-counterfeiting and information encryption demonstrate the potential of BPLCEs-based CPL active materials.
Publisher
Light: Science & Applications
Published On
Mar 01, 2024
Authors
Shan Li, Yuqi Tang, Qingyan Fan, Ziyuan Li, Xinfang Zhang, Jingxia Wang, Jinbao Guo, Quan Li
Tags
circularly polarized luminescence
polymer-based materials
quantum dots
liquid crystal elastomers
anti-counterfeiting
information encryption
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