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Zirconia Nanocolloids Having a Nanospace of Poly(cyclodextrin): Preparation and Application to Liquid Crystal Devices

Zirconia Nanocolloids Having a Nanospace of Poly(cyclodextrin): Preparation and Application to Liquid Crystal Devices

Hiroya Sawai, Yukihide Shiraishi, Tomohiro Miyama, Shunsuke Kobayashi, Naoki Toshima

J Nanosci Nanotechnol. 2014 Mar;14(3):2217-24.

PMID: 24745215

Abstract:

Poly(gamma-cyclodextrin) (PgammaCyD)-protected ZrO2 nanocolloids were prepared by using a microwave reactor equipped with ultrasonic nozzle mixing at 240 degrees C for 30 min in a tetraethylene glycol solution of zirconium (IV) ethoxide in the presence of poly(gamma-cyclodextrin). Particles in PgammaCyD-protected ZrO2 nanocolloids have an average diameter of 7.2 nm and mainly distribute within the range of about 3 to 10 nm. The nanocolloids were dispersed in 4'-pentylbiphenyl-4-carbonitrile (5CB) and practical liquid crystal to construct novel twisted nematic liquid crystal devices (TN-LCDs). The response time of this TN-LCDs in the presence of PgammaCyD-protected ZrO2 nanocolloids was faster than that in the absence. The threshold voltage of TN-LCDs by doping PgammaCyD-protected ZrO2 nanocolloids decreased. The decrease of threshold voltage can reduce power consumption, which may meet the demands of future power-saving LCDs.

Chemicals Related in the Paper:

Catalog Number	Product Name	Structure	CAS Number	Price
AP18267088	Zirconium(IV) ethoxide		18267-08-8	Price

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