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Red Electrophoretic Particles Based on Fe_2O_3 Nanoparticles for Electronic Inks: Design, Preparation and Properties

Red Electrophoretic Particles Based on Fe_2O_3 Nanoparticles for Electronic Inks: Design, Preparation and Properties
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摘要 In order to modify inorganic particles as chromatic electrophoretic particles, an approach was designed and used to prepare Fe203 red electrophoretic particles. These Fe203-cationic hybrid nanoparticles (Fe203-CHNPs)were prepared through Fe203 core covered with polymer shell which was composed of SiO2 and P (DMAEMA-co-HMA) by using atom transfer radical polymerization (ATRP)technique. The SiO:-coating could introduce the functional group on the surfaceof inorganic particles, through which the polymer shell could be formed by using ATRP tech- nique. The results of Fourier transform infrared spectra (FT-IR), X-ray photoelectron spectroscopy (XPS) and thermal gravimetric analysis (TGA)confirmed the chemical compositions of Fe2O3-CHNPs; the images of transmission elec- tron microscopy (TEM) indicated the core-shell structure of Fe2O3-CHNPs; the measurements of dynamic light scatter- ing (DLS) showed a 253.7 nm average particle size with narrow size distribution; and the zeta potential measurements identified the high chargeability of Fe2O3-CHNPs. Furthermore, the resulting nanoparticles were successfully applied in the electrophoretic display cell, which demonstrated that it was an effective approach to preparing chromatic elec- trophoretic particles. In order to modify inorganic particles as chromatic electrophoretic particles, an approach was designed and used to prepare Fe2O3 red electrophoretic particles. These Fe2O3-cationic hybrid nanoparticles(Fe2O3-CHNPs)were prepared through Fe2O3 core covered with polymer shell which was composed of SiO 2 and P(DMAEMA-co-HMA)by using atom transfer radical polymerization(ATRP)technique. The Si O2-coating could introduce the functional group on the surfaceof inorganic particles, through which the polymer shell could be formed by using ATRP technique. The results of Fourier transform infrared spectra(FT-IR), X-ray photoelectron spectroscopy(XPS)and thermal gravimetric analysis(TGA)confirmed the chemical compositions of Fe2O3-CHNPs; the images of transmission electron microscopy(TEM)indicated the core-shell structure of Fe2O3-CHNPs; the measurements of dynamic light scattering(DLS)showed a 253.7 nm average particle size with narrow size distribution; and the zeta potential measurements identified the high chargeability of Fe2O3-CHNPs. Furthermore, the resulting nanoparticles were successfully applied in the electrophoretic display cell, which demonstrated that it was an effective approach to preparing chromatic electrophoretic particles.
出处 《Transactions of Tianjin University》 EI CAS 2015年第3期244-249,共6页 天津大学学报(英文版)
关键词 FE2O3 electrophoretic particles ATRP chromatic display 纳米粒子 Fe2O3 电泳 制备 电子墨水 设计 原子转移自由基聚合 X射线光电子能谱
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