NIMTE OpenIR  > 2018专题
Counterion-Induced Nanosheet-to-Nanofilament Transition of Lyotropic Bent-Core Liquid Crystals
Wang, Daoliang; Yan, Qi; Zhong, Fei; Li, Yahui; Fu, Ming; Meng, Lingpu; Huang, Youju; Li, Liangbin
2018
Source PublicationLANGMUIR
Volume34Issue:43Pages:13006-13013
AbstractThe smart flexibility of phase transitions in liquid crystals (LCs) makes them suitable for various applications and is an important research field in contemporary science, engineering, and technology. Unlike most reports focused on bent-core LCs in the thermotropic situation, in our present study, we designed and synthesized a fully rigid bent-core molecule with the sulfonic acid group replacing conventional flexible chains. A rich variety of counterion-induced supramolecular LC phase behaviors have been systematically investigated. It was found that the smectic phase with nanosheets tends to transform to the hexagonal phase with nanofilaments when the protons of the sulfonic acid group are partially replaced by alkali metal ions. The experimental results show that the nanoaggregate and phase transition are controlled by the displacing ratio of alkali metal ions rather than the molecular concentration. Another interesting feature is that the achiral bent-core molecules self-assemble into columns by helical stacking and present macroscopic chirality, indicating that spontaneous chiral symmetry breaking occurs in the columnar phase. The fully rigid bent-core molecules reveal surprisingly hierarchical molecular self-assemblies with the smectic-to-hexagonal phase transition, which was not previously observed in supramolecular complexes. The findings will provide new possibilities for applications in LC-based photonic devices, biosystem switches, and supramolecular actuators.
KeywordFolic-acid Derivatives Phase-transitions Supramolecular Chirality Functional Materials Shaped Molecules Smectic Phase Assemblies Induction Transport Behavior
Subject AreaEngineering
Language英语
Document Type期刊论文
Identifierhttp://ir.nimte.ac.cn/handle/174433/17100
Collection2018专题
Recommended Citation
GB/T 7714
Wang, Daoliang,Yan, Qi,Zhong, Fei,et al. Counterion-Induced Nanosheet-to-Nanofilament Transition of Lyotropic Bent-Core Liquid Crystals[J]. LANGMUIR,2018,34(43):13006-13013.
APA Wang, Daoliang.,Yan, Qi.,Zhong, Fei.,Li, Yahui.,Fu, Ming.,...&Li, Liangbin.(2018).Counterion-Induced Nanosheet-to-Nanofilament Transition of Lyotropic Bent-Core Liquid Crystals.LANGMUIR,34(43),13006-13013.
MLA Wang, Daoliang,et al."Counterion-Induced Nanosheet-to-Nanofilament Transition of Lyotropic Bent-Core Liquid Crystals".LANGMUIR 34.43(2018):13006-13013.
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