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Goossens, Karel
다차원 탄소재료 연구단
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Double-Gyroid Nanostructure Formation by Aggregation-Induced Atropisomerization and Co-Assembly of Ionic Liquid-Crystalline Amphiphiles

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Title
Double-Gyroid Nanostructure Formation by Aggregation-Induced Atropisomerization and Co-Assembly of Ionic Liquid-Crystalline Amphiphiles
Author(s)
Nanami Uemura; Tsubasa Kobayashi; Shintaro Yoshida; Ya-xin Li; Karel Goossens; Xiangbing Zeng; Go Watanabe; Takahiro Ichikawa
Publication Date
2020-05
Journal
Angewandte Chemie - International Edition, v.59, no.22, pp.8445 - 8450
Publisher
John Wiley & Sons Ltd.
Abstract
We report a new molecular-design principle for creating double-gyroid nanostructured molecular assemblies based on atropisomerization. Ionic amphiphiles containing two imidazolium rings close to each other were designed and synthesized. NMR data revealed that the rotation of the imidazolium rings is restricted, with an activation energy as high as 63 kJ mol−1 in DMSO-d6 solution (DFT prediction for a model compound in the vacuum: 90–100 kJ mol−1). Due to the restricted rotation, the amphiphiles feature “double” atropisomeric axes in their ionic segments and form three stable atropisomers: meso, R, and S. These isomers co-organize into (Formula presented.) -type bicontinuous cubic liquid-crystalline mesophases through nanosegregation of the ionic and non-ionic parts. Considering the intrinsic characteristic of (Formula presented.) -type bicontinuous cubic structures that they are composed of intertwined right- and left-handed single gyroids, we propose that the simultaneous presence of both R- and S-atropisomers is an important contributor to the formation of double-gyroid structures
URI
https://pr.ibs.re.kr/handle/8788114/9017
DOI
10.1002/anie.202000424
ISSN
1433-7851
Appears in Collections:
Center for Multidimensional Carbon Materials(다차원 탄소재료 연구단) > 1. Journal Papers (저널논문)
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