Preparation of (Gold-Nanorod and Azo-Functionalized Polymer) Composite Films and Their Photochemical Properties

Abstract

Nano-composite films were prepared by mixing gold-nanorod (Au-nanorod) and azo-functionalized polymer in toluene, and following spin coating on a glass substrate. The compopsites films showed absorption bands around 520 and 1000 nm corresponding to the short and long axes of the Au-nanorod. Reversible change in absorbance at 1000 nm was achieved by photoalignment of molecular orientation of azo-chromophores.

Keywords:

• Au-nanorod
• azobenzene
• liquid crystal