单分散、高折射率微球的设计合成和颜色艳丽、稳定结构色的构筑

项目名称： 单分散、高折射率微球的设计合成和颜色艳丽、稳定结构色的构筑

项目编号： No.21476040

项目类型： 面上项目

立项/批准年度： 2015

项目学科： 有机化学

项目作者： 武素丽

作者单位： 大连理工大学

项目金额： 87万元

中文摘要： 本课题针对人工结构生色由于所用材料折射率低、微球有序结构稳定性差所导致的结构色不够艳丽和稳定的核心科学问题和高折射率材料难以制备成均匀、可组装微球的问题，设计合成高折射率多晶微球用以构筑结构色，实现颜色艳丽、可锁定的结构生色体系的构筑。研究多晶微球形成过程中晶核的生成和聚集生长两个过程的控制机制，探究粒径均匀、尺寸可控的多晶微球形成过程及机理；然后通过对微球表面包覆聚合物的方法提高微球表面的电荷密度，进行微球间的静电排斥与表面电荷密度相关性研究，实现微球的自分散与防团聚；改性后的微球通过浸滞提拉法构筑人工结构生色体系，通过多晶微球粒径大小调控结构生色的颜色；采用光固化法对微球有序结构锁定，建立高、低折射率材料的折射率差值、材料结构与结构色颜色、反射峰强度的关联性，得到色彩艳丽、长效稳定的的红、黄、蓝三原结构色，解决传统光子晶体结构色色彩暗淡和稳定性差的科学难题。

中文关键词： 单分散微球；高折射率；结构色；颜色艳丽；结构稳定

英文摘要： Because of the low refractive index of the artificial structural colored materials, the artificial structural color is not bright enough and can't keep stable for a long time. In addition, preparing highly monodispersed particles with high refractive index and good stability is difficulty. In order to overcome above problems, a two-step method was designed to synthesize monodispersed particles with high refractive index. Building periodic arrays of these particles will realize artificial structural color with strong brightness and good stability. The synthesis process and mechanism of the formation of monodispersed polycrystalline particle with controlled particle size will be investigated. The relationship between the surface charge on the particles and electrostatic repulsions will be studied to realize the monodisperse and anti-agglomeration of particles. The effect of particle size and size distribution on the tuning of structural color will be discussed. The pertinency of refractive index contrast and materials structural with the wavelength and reflax peak value will be established. The mechanism of tuning the structural color will be concluded and red, green and blue colors should be obtain finally. Thus, low brightness and poor stability- the scientific problems of the artificial structural color can be solved.

英文关键词： monodisperse sphere;high refractive index;structure color;bright color;stable structure