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Wang T, Wang Z, Xing P, Hao A. Thermal Chiroptical Switch Based on an Ultrahigh Temperature-Initiated Macrocycle Gel Platform. Macromol Rapid Commun 2024; 45:e2400316. [PMID: 38825873 DOI: 10.1002/marc.202400316] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2024] [Revised: 05/22/2024] [Indexed: 06/04/2024]
Abstract
Responsive chiral optical materials have gained considerable interests from the fields of sensing, display, and optical devices. Materials that are capable of changing chiral optics under harsh conditions such as strong basic/acidic or ultrahigh temperature provides thoughts for the design of materials working at special environments, which however, are still underdeveloped. Here, a proof-of-concept design of organogel is reported that acts as matrices for thermal chiroptical switch with critical working temperature above 100 °C. The reversible solution-to-gel transition of the specific β-cyclodextrin/dimethyl formide/LiCl system is initialized at about 130 °C, when the luminophores with aggregation-induced-emission property shall be lighted up with transferred chirality from inherent chiral β-cyclodextrin. It allows for the controlled emergence of circularly polarized luminescence. This delicate design enables successful fabrication of ultrahigh temperature thermal chiroptical switch.
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Affiliation(s)
- Tianhao Wang
- School of Chemistry and Chemical Engineering, Shandong University, Jinan, 250100, P. R. China
| | - Zhuoer Wang
- School of Chemistry and Chemical Engineering, Shandong University, Jinan, 250100, P. R. China
| | - Pengyao Xing
- School of Chemistry and Chemical Engineering, Shandong University, Jinan, 250100, P. R. China
| | - Aiyou Hao
- School of Chemistry and Chemical Engineering, Shandong University, Jinan, 250100, P. R. China
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Ma M, Wang T, Liu R, Jiang W, Niu Z, Bai M, Wu W, Hao A, Shang W. A novel green amino acid derivative hydrogel with multi-stimulus responsiveness. Colloid Polym Sci 2023. [DOI: 10.1007/s00396-023-05095-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/07/2023]
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Geng Z, Liu Z, Li H, Zhang Y, Zheng W, Quan Y, Cheng Y. Inverted and Amplified CP-EL Behavior Promoted by AIE-Active Chiral Co-Assembled Helical Nanofibers. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2023; 35:e2209495. [PMID: 36479735 DOI: 10.1002/adma.202209495] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/15/2022] [Revised: 11/30/2022] [Indexed: 06/17/2023]
Abstract
It is well-known that high-performance circularly polarized organic light-emitting diodes (CP-OLEDs) remain a formidable challenge to the future application of circularly polarized luminescent (CPL)-active materials. Herein, the design of a pair of AIE-active chiral enantiomers (L/D-HP) is described to construct chiral co-assemblies with an achiral naphthalimide dye (NTi). The resulting co-assemblies emit an inverted CPL signal compared with that from the L/D-HP enantiomers. After thermal annealing at 120 °C, the inverted CPL signal of this kind of L/D-HP-NTi with a 1:1 molar ratio shows regular and ordered helical nanofibers arranged through intermolecularly ordered layered packing and is accompanied with a further amplified effect (|gem | = 0.032, λem = 535 nm). Significantly, non-doped CP-OLEDs based on a device emitting layer (EML) of L/D-HP-NTi exhibits a low turn-on voltage (Von ) of 4.7 V, a high maximum brightness (Lmax ) of 2001 cd m-2 , and moderate maximum external quantum efficiency (EQEmax ) of 2.3%, as well as excellent circularly polarized electroluminescence (CP-EL) (|gEL | = 0.023, λem = 533 nm).
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Affiliation(s)
- Zhongxing Geng
- State Key Laboratory of Coordination Chemistry, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210023, P. R. China
| | - Zheng Liu
- State Key Laboratory of Coordination Chemistry, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210023, P. R. China
| | - Hang Li
- State Key Laboratory of Coordination Chemistry, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210023, P. R. China
| | - Yu Zhang
- Key Laboratory of High Performance Polymer Material and Technology of Ministry of Education, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210023, P. R. China
| | - Wenhua Zheng
- State Key Laboratory of Coordination Chemistry, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210023, P. R. China
| | - Yiwu Quan
- Key Laboratory of High Performance Polymer Material and Technology of Ministry of Education, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210023, P. R. China
| | - Yixiang Cheng
- State Key Laboratory of Coordination Chemistry, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210023, P. R. China
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