Supertwisted Chiral Gyroid Mesophase in Chiral Rod‐Like Compounds
Abstract: Among the intriguing bicontinuous self‐assembled structures, the gyroid cubic is the most ubiquitous. It is found in block and star polymers, surfactants with or without solvent, in thermotropic liquid crystals with end‐ or side‐chains, and in biosystems providing structural color and modelling cell mitosis. It contains two interpenetrating networks of opposite chirality and is thus achiral if, as usual, the content of the two nets is the same. However, we now find that this is not the case for strongly chiral compounds. While achiral molecules follow the opposite twists of nets 1 and 2, molecules with a chiral center in their rod‐like core fail to follow the 70° twist between junctions in net 2 and instead wind against it by −110° to still match the junction orientation. The metastable chiral gyroid is a high‐entropy high‐heat‐capacity mesophase. The homochirality of its nets makes the CD signal of the thienofluorenone compounds close to that in the stable I23 phase with 3 isochiral nets.
- Location
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Deutsche Nationalbibliothek Frankfurt am Main
- Extent
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Online-Ressource
- Language
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Englisch
- Bibliographic citation
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Supertwisted Chiral Gyroid Mesophase in Chiral Rod‐Like Compounds ; day:02 ; month:05 ; year:2024 ; extent:7
Angewandte Chemie ; (02.05.2024) (gesamt 7)
- Creator
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Wang, Yan
Yang, Shu‐Gui
Li, Ya‐Xin
Cao, Yu
Liu, Feng
Zeng, Xiang‐Bing
Cseh, Liliana
Ungar, Goran
- DOI
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10.1002/ange.202403156
- URN
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urn:nbn:de:101:1-2405021428214.153323651991
- Rights
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Open Access; Der Zugriff auf das Objekt ist unbeschränkt möglich.
- Last update
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14.08.2025, 10:56 AM CEST
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Associated
- Wang, Yan
- Yang, Shu‐Gui
- Li, Ya‐Xin
- Cao, Yu
- Liu, Feng
- Zeng, Xiang‐Bing
- Cseh, Liliana
- Ungar, Goran
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