权益分类	功能权益	普通用户	{{item.name}}会员
{{category.name}}	{{benefitItem.name}}

Preparation of liquid crystal molecule-protected metal nanoparticles and application to liquid crystal displays

液晶分子保护金属纳米颗粒的制备及其在液晶显示中的应用

基本信息

批准号：
16510093
负责人：
SHIRAISHI Yukihide
金额：
$ 2.66万
依托单位：
Tokyo University of Science, Yamaguchi
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (C)
财政年份：
2004
资助国家：
日本
起止时间：
2004 至 2007
项目状态：
已结题

项目摘要

Much attention has been paid to nanoscience and nanotechnology leading to nanodevices, because their developments are requested for the Information Technology revolution. Metal nanoparticles stabilized by organic molecules are considered as a building block of nano-organized systems, which may play an important role in nanotechnology. This study aims to synthesize liquid-crystalline molecule-protected metallic nanoparticles and to develop liquid crystal devices (LCDs) by using these metal nanoparticles. The main results are the followings.1) 4-Cyano-4'-pentylbiphenyl(5CB)-protected Pd nanoparticles were prepared by UV irradiation of a tetrahydrofuran solution of palladium acetate in the presence of 5CB. The guest host-LCD cell fabricated by Pd nanoparticles showed the improvement of contrast ratio doped with liquid-crystalline molecule-protected Pd nanoparticles.2) We prepared Au nanoparticles and nanorods protected by several organic stabilizers. The LCD cell doped by Au nanoparticles exhibited the frequency modulation response in more wide range of voltage than that of Pd nanoparticles.3) Poly(β-cyclodextrin)-capped Rh (PβCyD-Rh) nanoparticles were prepared by refluxing an alcohol/water solution of rhodium(III) chloride in the presence of poly(β-cyclodextrin). A twisted-nematic (TN) - LCD was fabricated by doping LC host matrices with PβCyD-Rh nanoparticles. The response of this TN-LCD is faster than that of the conventional devise.

导致纳米器件的纳米科学和纳米技术受到了极大的关注，因为它们的发展是信息技术革命的要求。有机分子稳定的金属纳米粒子被认为是构建纳米有序体系的基石，在纳米技术中可能发挥重要作用。本研究旨在合成液晶分子保护的金属纳米粒子，并利用这些金属纳米粒子开发液晶器件。主要研究结果如下：1)采用紫外光照射醋酸钯四氢呋喃溶液制备了4-氰基-4‘-戊基联苯(5CB)保护的Pd纳米粒子。用Pd纳米粒子制备的客体液晶液晶盒显示了掺杂液晶分子保护的Pd纳米粒子提高了对比度。2)我们制备了几种有机稳定剂保护的Au纳米粒子和纳米棒。Au纳米颗粒掺杂的液晶电池在更宽的电压范围内表现出比Pd纳米颗粒更宽的频率调制响应。3)在聚β-环糊精的存在下，采用回流法制备了聚(β-环糊精)修饰的Rh(Pβ-Cyd-Rh)纳米颗粒。通过在液晶基质中掺杂P-βCyD-Rh纳米颗粒，制备了扭曲向列型液晶显示器。这种TN-LCD的响应速度比传统的器件更快。