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Yuan J, Lu X, Li Q, Lü Z, Lu Q. Reversible Micrometer-Scale Spiral Self-Assembly in Liquid Crystalline Block Copolymer Film with Controllable Chiral Response. Angew Chem Int Ed Engl 2021; 60:12308-12312. [PMID: 33749105 DOI: 10.1002/anie.202101102] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2021] [Revised: 03/09/2021] [Indexed: 12/18/2022]
Abstract
The spiral is a fundamental structure in nature and spiral structures with controllable handedness are of increasing interest in the design of new chiroptical materials. In this study, micrometer-scale spiral structures with reversible chirality were fabricated based on the assembly of a liquid crystalline block copolymer film assisted by enantiopure tartaric acid. Mechanistic insight revealed that the formation of the spiral structures was closely related to the liquid crystalline properties of the major phase of block copolymer under the action of chiral tartaric acid. The chiral spiral structures with controllable handedness were easily erased under ultraviolet light irradiation and restored via thermal annealing. This facile thermal treatment method provides guidance for fabrication of chiral micrometer-scale spiral structures with adjustable chiral properties.
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Affiliation(s)
- Jianan Yuan
- School of Chemical Science and Technology, Tongji University, Siping Road No. 1239, Shanghai, 200092, China
| | - Xuemin Lu
- Shanghai Key Lab of Electrical & Thermal Aging, School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, Dongchuan Road No. 800, Shanghai, 200240, China
| | - Qingxiang Li
- Shanghai Key Lab of Electrical & Thermal Aging, School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, Dongchuan Road No. 800, Shanghai, 200240, China
| | - Zhiguo Lü
- School of Physics and Astronomy, Key Laboratory of Artificial Structures and Quantum Control, Shanghai Jiao Tong University, Dongchuan Road No. 800, Shanghai, 200240, China
| | - Qinghua Lu
- School of Chemical Science and Technology, Tongji University, Siping Road No. 1239, Shanghai, 200092, China.,Shanghai Key Lab of Electrical & Thermal Aging, School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, Dongchuan Road No. 800, Shanghai, 200240, China
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Yuan J, Lu X, Li Q, Lü Z, Lu Q. Reversible Micrometer‐Scale Spiral Self‐Assembly in Liquid Crystalline Block Copolymer Film with Controllable Chiral Response. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202101102] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Jianan Yuan
- School of Chemical Science and Technology Tongji University Siping Road No. 1239 Shanghai 200092 China
| | - Xuemin Lu
- Shanghai Key Lab of Electrical & Thermal Aging School of Chemistry and Chemical Engineering Shanghai Jiao Tong University Dongchuan Road No. 800 Shanghai 200240 China
| | - Qingxiang Li
- Shanghai Key Lab of Electrical & Thermal Aging School of Chemistry and Chemical Engineering Shanghai Jiao Tong University Dongchuan Road No. 800 Shanghai 200240 China
| | - Zhiguo Lü
- School of Physics and Astronomy Key Laboratory of Artificial Structures and Quantum Control Shanghai Jiao Tong University Dongchuan Road No. 800 Shanghai 200240 China
| | - Qinghua Lu
- School of Chemical Science and Technology Tongji University Siping Road No. 1239 Shanghai 200092 China
- Shanghai Key Lab of Electrical & Thermal Aging School of Chemistry and Chemical Engineering Shanghai Jiao Tong University Dongchuan Road No. 800 Shanghai 200240 China
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