Liquid crystalline physical gels: electro-optic properties and microphase-separated structures

Norihiro Mizoshita; Takaaki Kutsuna; Kenji Hanabusa; Takashi Kato

doi:10.1117/12.405311

24 October 2000 Liquid crystalline physical gels: electro-optic properties and microphase-separated structures

Norihiro Mizoshita, Takaaki Kutsuna, Kenji Hanabusa, Takashi Kato

Proceedings Volume 4107, Liquid Crystals IV; (2000) https://doi.org/10.1117/12.405311
Event: International Symposium on Optical Science and Technology, 2000, San Diego, CA, United States

Abstract

A nematic liquid crystal, 4-(trans-4- pentylcyclohexyl)benzonitrile, has been physically gelled by hydrogen-bonded network formation of low molecular weight additives, that is, three amide compounds. Electro-optic measurements in twisted nematic (TN) cells have been performed for the resultant gels that exhibit liquid-crystalline gel states at room temperature. Each of the anisotropic gels formed by the three gelling agents, exhibiting microphase- separated structures, shows different electro-optic responses. One of the gels responds to an electric field more than twice as fast as the single liquid crystal component. Network aggregates with different morphologies are observed for each of the gelling agents. More finely dispersed fibrous networks would contribute to the faster electro-optic response. Thermal transition behavior and composite structures of the anisotropic physical gels have been examined by polarizing optical microscope observation and differential scanning calorimetry.

Citation Download Citation

Norihiro Mizoshita, Takaaki Kutsuna, Kenji Hanabusa, and Takashi Kato "Liquid crystalline physical gels: electro-optic properties and microphase-separated structures", Proc. SPIE 4107, Liquid Crystals IV, (24 October 2000); https://doi.org/10.1117/12.405311

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