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Jiang Q, Ruan H, Sun C, Wang T, Zhang Y, Qiu Y, Wang H, Liao Y, Xie X. Two-Color Cholesteric Liquid Crystalline Gels for Reversible Writing and Erasing Information Encryption. Macromol Rapid Commun 2023; 44:e2200915. [PMID: 36700341 DOI: 10.1002/marc.202200915] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2022] [Revised: 01/19/2023] [Indexed: 01/27/2023]
Abstract
Bright structural color derived from the unique helical superstructure of cholesteric liquid crystals (CLCs) has attracted much attention. In addition, fluorescence color is an intrinsic emission upon excitation, which can be observed often under UV light. However, it is a challenge to combine the fluorescence and structural colors to construct a self-supporting system at the same time. In this work, a photoresponsive cyanostilbene-based gelator (CSpy-C10) is synthesized, which emits blue fluorescence in LC. CSpy-C10 can gel LCs and further construct thermo-/photoresponsive CLC physical gels. The structural color of the CLCs, fluorescence, and mechanical properties of the gels can be independently regulated due to the separation of the chiral unit and photoresponsive unit with aggregation-induced emission behavior. Finally, the reversible information encryption including writing and erasing based on the changes in fluorescence are explored. This kind of two-color material can be applied in the fields ranging from information encryption, fluorescent display to high-tech anticounterfeiting.
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Affiliation(s)
- Qian Jiang
- Key Laboratory of Material Chemistry for Energy Conversion and Storage, Ministry of Education, Hubei Key Laboratory of Materials Chemistry and Service Failure, Hubei Engineering Research Center for Biomaterials and Medical Protective Materials, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Wuhan, 430074, China
| | - Huan Ruan
- Key Laboratory of Material Chemistry for Energy Conversion and Storage, Ministry of Education, Hubei Key Laboratory of Materials Chemistry and Service Failure, Hubei Engineering Research Center for Biomaterials and Medical Protective Materials, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Wuhan, 430074, China
| | - Chenchen Sun
- Key Laboratory of Material Chemistry for Energy Conversion and Storage, Ministry of Education, Hubei Key Laboratory of Materials Chemistry and Service Failure, Hubei Engineering Research Center for Biomaterials and Medical Protective Materials, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Wuhan, 430074, China
| | - Tian Wang
- Key Laboratory of Material Chemistry for Energy Conversion and Storage, Ministry of Education, Hubei Key Laboratory of Materials Chemistry and Service Failure, Hubei Engineering Research Center for Biomaterials and Medical Protective Materials, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Wuhan, 430074, China
| | - Yuping Zhang
- Key Laboratory of Material Chemistry for Energy Conversion and Storage, Ministry of Education, Hubei Key Laboratory of Materials Chemistry and Service Failure, Hubei Engineering Research Center for Biomaterials and Medical Protective Materials, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Wuhan, 430074, China
| | - Yuan Qiu
- Key Laboratory of Material Chemistry for Energy Conversion and Storage, Ministry of Education, Hubei Key Laboratory of Materials Chemistry and Service Failure, Hubei Engineering Research Center for Biomaterials and Medical Protective Materials, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Wuhan, 430074, China
| | - Hong Wang
- Key Laboratory of Material Chemistry for Energy Conversion and Storage, Ministry of Education, Hubei Key Laboratory of Materials Chemistry and Service Failure, Hubei Engineering Research Center for Biomaterials and Medical Protective Materials, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Wuhan, 430074, China
| | - Yonggui Liao
- Key Laboratory of Material Chemistry for Energy Conversion and Storage, Ministry of Education, Hubei Key Laboratory of Materials Chemistry and Service Failure, Hubei Engineering Research Center for Biomaterials and Medical Protective Materials, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Wuhan, 430074, China.,National Anticounterfeit Engineering Research Center, Huazhong University of Science and Technology, Wuhan, 430074, China
| | - Xiaolin Xie
- National Anticounterfeit Engineering Research Center, Huazhong University of Science and Technology, Wuhan, 430074, China
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