基于微流控技术可控制备响应型光子晶体微珠.doc


基于微流控技术可控制备响应型光子晶体
微珠#
杨晓煜,张静,田宇,刘思思,王彩凤,陈苏**
5
10
(南京工业大学化学化工学院,材料化学工程国家重点实验室,南京 210009)
摘要:基于微流控技术,在微通道受限空间中实现材料的有序组装与功能复合,是目前构筑
各类功能性杂化材料的有效方式。本文借助微流控技术,以单分散聚苯乙烯(PS)微球为构筑
单元,以生成的球形微滴为组装模板,成功制备出具有鲜艳结构色的光子晶体微珠。然后将
其进一步与温敏材料聚异丙基丙烯酰胺(PNIPAm)复合,实现了温敏聚合物-光子晶体复合微
珠的制备。该复合微珠表现出灵敏、可逆的温度响应性,并且其结构色不随观察角度发生变
化,有望在环境敏感型器件中得到应用。
关键词:微流控;组装;光子晶体微珠;温度响应;聚苯乙烯;聚异丙基丙烯酰胺
中图分类号:O63; TB324; TB34; TB381
15
Controllable Fabrication of Responsive Photonic Crystal
Beads via Microfluidic Technique
YANG Xiaoyu, ZHANG Jing, TIAN Yu, LIU Sisi, WANG Caifeng, CHEN Su
(State Key Laboratory of Materials-oriented Chemical Engineering, College of Chemistry and
20
25
30
35
40
Chemical Engineering, Nanjing University of Technology, NanJing 210009)
Abstract: Microfluidic devices have recently emerged as a powerful playform to fabricate
functional materials with diverse applications, where ordered assembly and functionalization of
the materials can be achieved simultaneously in a confined space. In this paper, using
monodisperse polystyrene (PS) microparticles with different diameters as the construction units,
we prepared photonic crystal microbeads with various structural colors via microfluidic technique.
Furthermore, the temperature-sensitive polymer-photonic posite microbeads were
fabricated via microfluidic technique by infiltrating N-isopropylacrylamide (NIPAm) into the