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Article
Heterostructures of Polymer Photonic Crystal Films
Chemistry of Materials (2003)
  • Marc Egen
  • Rebecca Voss
  • Bernd Griesebock
  • Rudolf Zentel
  • Sergei Romanov
  • Clivia Sotomayor Torres
Abstract

This paper describes ways to multilayer opaline films (opaline heterostructures) composed from functional opal layers of spheres with different lattice constants. At first various monodisperse colloidsboth cross-linked and un-cross-linkedwere prepared from methyl methacrylate, methyl α-chloroacrylate, and methyl α-bromoacrylate. These colloids can be crystallized into large, well-oriented opaline films with the help of a “drawing apparatus” by the method of crystallization in a moving meniscus. After annealing, a second opaline film can be crystallized on top of these films and so on. Electron microscopy inspection shows a sharp borderline between the sublayers and no disorder on both sides although the lattice constants in both films can be incommensurable. Transmission and reflection measurements prove the high quality of the films. The use of a combination of thermolabile and thermostable colloids opens the possibility to prepare functional opaline heterostructures.

Disciplines
Publication Date
October 7, 2003
Publisher Statement
Posted with permission from Chemistry of Materials 15 (2003): 3786–3792, doi:10.1021/cm030087y. Copyright 2003 American Chemical Society.
Citation Information
Marc Egen, Rebecca Voss, Bernd Griesebock, Rudolf Zentel, et al.. "Heterostructures of Polymer Photonic Crystal Films" Chemistry of Materials Vol. 15 Iss. 20 (2003)
Available at: http://works.bepress.com/rebecca_cademartiri/7/