title: Liquid crystal sol containing oleophilic Pd nanoparticles for liquid crystal device.
abstract: We have succeeded in preparation of liquid crystal sol containing oleophilic Pd nanoparticles (NPs) stabilized by multidentate copolymer and fabrication of the twisted nematic liquid crystal devices (TN-LCDs) by using Pd NP-containing liquid crystal sol. Oleophilic Pd NPs were prepared by refluxing Pd acetate solution in toluene/ethanol containing poly(N-vinyl-2-pyroridone-co-styrene). Oleophilic Pd NPs showed better solubility in liquid crystal medium than poly(N-vinyl-2-pyrrolidone)-stabilized NPs. The TN-LCDs were fabricated by using two kinds of practical liquid crystal materials doped with oleophilic Pd NPs. The NP-doped LCD showed 22% faster response than non-doped one at -20 degrees C without a chiral dopant. However, LCDs fabricated by liquid crystal materials with a chiral dopant were not affected by NPs. These results suggest that the effect of NPs on the electro-optic performance of LCD is incompatible with that of a chiral dopant.
authors.affiliation: Department of Applied Chemistry, Tokyo University of Science Yamaguchi, 1-1-1 Daigaku-Dori, SanyoOnoda-Shi, Yamaguchi 756-0884, Japan.
authors.forename: Naoto
authors.initials: N
authors.lastname: Nishida
authors.forename: Shotaro
authors.initials: S
authors.lastname: Ohta
authors.forename: Naoki
authors.initials: N
authors.lastname: Toshima
mesh_terms: D004867:Equipment Design; D019544:Equipment Failure Analysis; D008029:Lighting / Q000295:instrumentation*; D050866:Liquid Crystals / Q000737:chemistry*; D049329:Nanostructures / Q000737:chemistry* / Q000648:ultrastructure*; D010165:Palladium / Q000737:chemistry*; D010316:Particle Size
chemical_list: D010165:Palladium