title: Size tuned electrophoretic pyrazoline nanoparticles prepared through dispersion-polymerization.
abstract: Highly monodispersed electrophoretic particles of size ranging from 550 to 160 nm could be prepared through dispersion-polymerization of methyl methacrylate and ethylene glycol dimethacrylate in presence of pyrazoline nanoparticles in a methanol-water mixture. The size of the fabricated electrophoretic particles could be controlled by adjusting the concentration of surfactant. Stearic acid, used as surfactant during the polymerization process also acts as charge controlling additive to control the electrophoric mobility of the particles. Maximum electrophoric mobility (-7.513×10(-5) cm(2)/Vs) was obtained for the 400 nm electrophoretic particles prepared with 1.5 wt.% of stearic acid surfactant. The electrophoric display cells prepared with our electrophoretic particles reveal good current voltage characteristics and color change under applied bias voltage.
authors.affiliation: Department of Chemistry, Pukyong National University, Busan 608-737, Republic of Korea.
authors.forename: Sun Wha
authors.initials: SW
authors.lastname: Oh
authors.forename: Chang Woo
authors.initials: CW
authors.lastname: Kim
authors.forename: Se-Mo
authors.initials: SM
authors.lastname: Son
authors.forename: Young Soo
authors.initials: YS
authors.lastname: Kang