Abstract
Azobenzene (AB) doped inorganic-organic hybrid films were prepared via a sol-gel process. The absorbance of AB in the film was gradually decreased by drying at room temperature after the film preparation. The rate of absorbance decrease of phenylsilsesquioxane film was slower than those of the films with the other inorganic-organic matrices. The difference of the rate was attributed to the occurrence of an intermolecular pi-pi stacking interaction between phenyl functional groups and benzene rings of AB.
