Photoinduced properties of liquid crystalline azobenzene polymer in Langmuir-Blodgett films investigated by surface plasmon resonance

Jianhua Gu, Bingjie Liang, Lingyun Liu, Yianqing Tian, Yiwen Chen, Bin Lu, Zuhong Lu

Research output: Contribution to journalArticle

6 Scopus citations

Abstract

A novel phenomenon of photoisomerization-induced switch properties in liquid crystalline azobenzene polymer poly{2-hydroethylmethacrylate}-co-{{6-[4-(s-2-methyl-1- bufyloxycarbonylphenylazo)phenoxy]hexylmethacrylate}} Langmuir-Blodgett (LB) monolayers is reported. These monolayers were deposited on gold film and irradiated with UV (360 nm) and blue (450 nm) light. The switching properties were investigated by the surface plasmon resonance (SPR) technique. 11 has been shown that it is possible to switch the refractive index reversibly by irradiating these films with light of appropri ate wavelength. Evi dence shows that the surf ace pressure has an influence on the evolution of the resonance angle.

Original languageEnglish (US)
Pages (from-to)427-430
Number of pages4
JournalThin Solid Films
Volume327-329
Issue number1-2
DOIs
StatePublished - 1998

Keywords

  • Azobenzene
  • Langmuir-Blodgett film
  • Liquid crystal
  • Molecular switch
  • Photoisomerization induction
  • Surface plasmon resonance

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Surfaces and Interfaces
  • Surfaces, Coatings and Films
  • Metals and Alloys
  • Materials Chemistry

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