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ACS Appl Mater Interfaces. 2018 Dec 12;10(49):43184-43191. doi: 10.1021/acsami.8b14488. Epub 2018 Nov 27.

Chirality-Enabled Liquid Crystalline Physical Gels with High Modulus but Low Driving Voltage.

Author information

1
Key Lab for Material Chemistry of Energy Conversion and Storage, Ministry of Education, School of Chemistry and Chemical Engineering , Huazhong University of Science and Technology (HUST) , Wuhan 430074 , China.
2
School of Materials Science and Engineering , Shanghai Jiaotong University , Shanghai 200240 , China.
3
Department of Physics and Materials Science and Engineering Program , University of Colorado at Boulder (CUB) , Boulder , Colorado 80309 , United States.
4
Sino-US Joint Research Center on Liquid Crystal Chemistry and Physics, HUST and CUB , Wuhan 430074 , China.

Abstract

Self-supporting liquid crystalline physical gels with facile electro-optic response are highly desirable, but their development is challenging because both the storage modulus and driving voltage increase simultaneously with gelator loading. Herein, we report liquid crystalline physical gels with high modulus but low driving voltage. This behavior is enabled by chirality transfer from the molecular level to three-dimensional fibrous networks during the self-assembly of 1,4-benzenedicarboxamide phenylalanine derivatives. Interestingly, the critical gel concentration is as low as 0.1 wt %. Our findings open doors to understanding and exploiting the role of chirality in organic gels.

KEYWORDS:

chirality; high modulus; liquid crystal; low driving voltage; physical gel

PMID:
30421604
DOI:
10.1021/acsami.8b14488

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