Electric field induced structural color changes of highly monodisperse hollow Fe3O4@C colloidal suspensions

被引：10
|
作者：
Qiao, Xuanxuan [1 ,2 ,3 ]
Sun, Aihua [2 ,3 ]
Wang, Chongyang [2 ,3 ]
Chu, Chengyi [2 ,3 ]
Ma, Si [2 ,3 ]
Tang, Xiaobing [2 ,3 ]
Guo, Jianjun [2 ,3 ]
Xu, Gaojie [2 ,3 ]
机构：
[1] Shanghai Univ, Sch Mat Sci & Engn, Shanghai 20072, Peoples R China
[2] Chinese Acad Sci, Ningbo Inst Mat Technol & Engn, Ningbo 315201, Zhejiang, Peoples R China
[3] Key Lab Addit Mfg Mat Zhejiang Prov, Ningbo 315201, Zhejiang, Peoples R China
来源：
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS | 2016年 / 498卷
基金：
中国国家自然科学基金;
关键词：
Photonic crystal; Hollow nanoparticles; Optical properties; Dielectric spectrum; PHOTONIC CRYSTALS; PARTICLES; HYDROGEL; ARRAYS; SHELLS;
D O I：
10.1016/j.colsurfa.2016.03.027
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
Highly dispersed hollow Fe3O4@C nanoparticles with controllable particle sizes were prepared. Hollow Fe3O4@C nanoparticles were chosen not only because of their low density and high optical contrast, but also because of high refractive index, better optical properties. Corresponding colloidal suspension of hollow Fe3O4@C photonic crystals in propylene carbonate showed a highly adjustable structure color change upon applying of electric fields. After being stored for 28 days in propylene carbonate solution, these colloidal suspensions can still diffract visible lights when an electric field was applied, which is attributed to low density. Based on the dielectric spectroscopy analysis of hollow Fe3O4@C and SiO2@Fe3O4@C colloidal suspensions,a dielectric loss model has been proposed to explain the effect of surface properties on the assembly. (C) 2016 Elsevier B.V. All rights reserved.
引用
收藏
页码：74 / 80
页数：7
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