Mechanically Tunable Circularly Polarized Luminescence of Liquid Crystal-Templated Chiral Perovskite Quantum Dots
© 2024 Wiley‐VCH GmbH..
Endowing perovskite quantum dots (PQDs) with circularly polarized luminescence (CPL) offers great promise for innovative chiroptical applications, but the existing strategies are inefficient in acquiring stimuli-responsive flexible chiral perovskite films with large, tunable dissymmetry factor (glum) and long-term stability. Here, we report a strategy for the design and synthesis of luminescent cholesteric liquid crystal elastomer (Lumin-CLCE) films with mechanically tunable CPL, which is enabled by liquid crystal-templated chiral self-assembly and in situ covalent cross-linking of judiciously designed photopolymerizable CsPbX3 (X=Cl, Br, I) PQD nanomonomers into the elastic polymer networks. The resulting Lumin-CLCE films showcase circularly polarized structural color in natural light and noticeable CPL with a maximum glum value of up to 1.5 under UV light. The manipulation of CPL intensity and rotation direction is achieved by controlling the self-assembled helicoidal nanostructure and the handedness of soft helices. A significant breakthrough lies in the achievement of a reversible, mechanically tunable perovskite-based CPL switch activated by biaxial stretching, which enables flexible, dynamic anti-counterfeiting labels capable of decrypting preset information in specific polarization states. This work can provide new insights for the development of advanced chiral perovskite materials and their emerging applications in information encryption, flexible 3D displays, and beyond.
| Medienart: |
E-Artikel |
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| Erscheinungsjahr: |
2024 |
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| Erschienen: |
2024 |
| Enthalten in: |
Zur Gesamtaufnahme - year:2024 |
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| Enthalten in: |
Angewandte Chemie (International ed. in English) - (2024) vom: 25. März, Seite e202404202 |
| Sprache: |
Englisch |
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| Beteiligte Personen: |
Zhang, Xuan [VerfasserIn] |
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| Links: |
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| Themen: |
Chiral Liquid Crystal |
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| Anmerkungen: |
Date Revised 22.04.2024 published: Print-Electronic Citation Status Publisher |
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| doi: |
10.1002/anie.202404202 |
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| funding: |
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| PPN (Katalog-ID): |
NLM370150694 |
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| 520 | |a Endowing perovskite quantum dots (PQDs) with circularly polarized luminescence (CPL) offers great promise for innovative chiroptical applications, but the existing strategies are inefficient in acquiring stimuli-responsive flexible chiral perovskite films with large, tunable dissymmetry factor (glum) and long-term stability. Here, we report a strategy for the design and synthesis of luminescent cholesteric liquid crystal elastomer (Lumin-CLCE) films with mechanically tunable CPL, which is enabled by liquid crystal-templated chiral self-assembly and in situ covalent cross-linking of judiciously designed photopolymerizable CsPbX3 (X=Cl, Br, I) PQD nanomonomers into the elastic polymer networks. The resulting Lumin-CLCE films showcase circularly polarized structural color in natural light and noticeable CPL with a maximum glum value of up to 1.5 under UV light. The manipulation of CPL intensity and rotation direction is achieved by controlling the self-assembled helicoidal nanostructure and the handedness of soft helices. A significant breakthrough lies in the achievement of a reversible, mechanically tunable perovskite-based CPL switch activated by biaxial stretching, which enables flexible, dynamic anti-counterfeiting labels capable of decrypting preset information in specific polarization states. This work can provide new insights for the development of advanced chiral perovskite materials and their emerging applications in information encryption, flexible 3D displays, and beyond | ||
| 650 | 4 | |a Journal Article | |
| 650 | 4 | |a Chiral Liquid Crystal | |
| 650 | 4 | |a Circularly Polarized Luminescence | |
| 650 | 4 | |a Information Encryption | |
| 650 | 4 | |a Mechanochromism | |
| 650 | 4 | |a Perovskite Quantum Dots | |
| 700 | 1 | |a Li, Lin |e verfasserin |4 aut | |
| 700 | 1 | |a Chen, Yuanhao |e verfasserin |4 aut | |
| 700 | 1 | |a Valenzuela, Cristian |e verfasserin |4 aut | |
| 700 | 1 | |a Liu, Yuan |e verfasserin |4 aut | |
| 700 | 1 | |a Yang, Yanzhao |e verfasserin |4 aut | |
| 700 | 1 | |a Feng, Yufan |e verfasserin |4 aut | |
| 700 | 1 | |a Wang, Ling |e verfasserin |4 aut | |
| 700 | 1 | |a Feng, Wei |e verfasserin |4 aut | |
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