Azobenzene-Containing Supramolecular Side-Chain Polymer Films for Laser-Induced Surface Relief Gratings
journal contributionposted on 07.08.2007 by Jian Gao, Yaning He, Fang Liu, Xi Zhang, Zhiqiang Wang, Xiaogong Wang
Any type of content formally published in an academic journal, usually following a peer-review process.
In this article, we describe the fabrication of azobenzene-containing supramolecular side-chain polymer films based on hydrogen bonds, on which surface relief gratings can be laser-induced. The supramolecular polymer side-chain is formed by attaching different azobenzene-type compounds to poly(4-vinylpyridine) through hydrogen bonding, thus allowing for tuning the content and kind of the azobenzene derivatives easily and avoiding the tedious synthetic work. It is found that such an azobenzene-containing supramolecular side-chain polymer can form nice films by the spin-coating method for surface relief gratings, and moreover, a large surface modulation depth of 312 nm can be observed. We anticipate that this research provides a type of materials for surface relief gratings. In closing, we have provided a new approach for fabricating surface relief gratings employing hydrogen-bonded supramolecular side-chain azo polymers.