高等学校化学学报 ›› 2015, Vol. 36 ›› Issue (8): 1612-1618.doi: 10.7503/cjcu20150274

• 高分子化学 • 上一篇    下一篇

二维胶体晶体异质结构的制备及传感性

齐丰莲, 薛敏(), 薛飞, 孟子晖(), 邱丽莉, 徐志斌, 芦薇   

  1. 北京理工大学化工与环境学院, 北京 100081
  • 收稿日期:2015-04-08 出版日期:2015-08-10 发布日期:2015-06-12
  • 作者简介:联系人简介: 薛 敏, 女, 博士, 讲师, 主要从事光子晶体和色谱分析研究. E-mail:minxue@bit.edu.cn;孟子晖, 男, 博士, 教授, 博士生导师, 主要从事光子晶体研究. E-mail:m_zihui@yahoo.com
  • 基金资助:
    国家自然科学基金(批准号: 21375009)资助

Preparation and Chemical Sense Character of Two-dimensional Colloidal Crystal Heterostructures

QI Fenglian, XUE Min*(), XUE Fei, MENG Zihui*(), QIU Lili, XU Zhibin, LU Wei   

  1. School of Chemical Engineering and the Environment, Beijing Institute of Technology, Beijing 100081, China
  • Received:2015-04-08 Online:2015-08-10 Published:2015-06-12
  • Contact: XUE Min,MENG Zihui E-mail:minxue@bit.edu.cn;m_zihui@yahoo.com
  • Supported by:
    † Supported by the National Natural Science Foundation of China(No.21375009)

摘要:

制备具有不同粒径和折射率的聚苯乙烯(PS)和聚甲基丙烯酸甲酯(PMMA)微球, 采用多次尖端导流法制备多重二维胶体晶体异质结构(2D-CCHs)阵列, 在2D-CCHs阵列的间隙处填充丙烯酸类凝胶, 再将PS或PMMA模板微球去掉, 得到传质速度更快的2D-CCHs反蛋白石凝胶. 经扫描电子显微镜证实, 所制备的异质结构胶体晶体均为二维结构, 且排列较为规整. 德拜衍射、 反射光谱和结构色分析结果表明, 2D-CCHs的光学性质主要是各单层二维胶体晶体阵列独立衍射的叠加. 随着pH值由7降低至3, 双层2D-CCHs反蛋白石凝胶的德拜衍射环直径均减小了约80 nm, 表明2D-CCHs反蛋白石凝胶可应用于化学传感领域.

关键词: 胶体晶体, 异质结构, 尖端导流, 聚苯乙烯, 聚甲基丙烯酸甲酯

Abstract:

Polystyrene(PS) and poly(methyl methacrylate)(PMMA) suspensions with different particle sizes and refractive index were prepared. A successive air/water interface self-assembly method was developed to fabricate two-dimensional colloidal crystal heterostructures(2D-CCHs) array. Furthermore, 2-hydroxyethyl methacrylate-acrylic acid(HEMA-AA) 2D-CCHs inverse opals with high mass transfer efficiencies were obtained after removing the opal templates. The prepared heterostructures are highly ordered two-dimensional structures proved by scanning electron microscopy images(SEM). Debye diffraction rings, reflectance spectra and structural colors suggested that the optical properties of 2D-CCHs are attributed to overlay of the individual diffraction of single 2D colloidal crystal. With the pH value decreased from 7 to 3, Debye diffraction rings’ diameters of double-layers 2D-CCHs inverse opals both shrank nearly 80 nm. The response of 2D-CCHs to pH indicates their preliminary application in chemical sensors.

Key words: Colloidal crystal, Heterostructure, Air/water interface self-assembly method, Polystyrene, Poly(methyl methacrylate)

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