Nanostructured surfaces by supramolecular self-assembly of linear oligosilsesquioxanes with biocompatible side groups.

ABSTRACT: Linear oligomeric silsesquioxanes with polar side moieties (e.g., carboxylic groups and derivatives of N-acetylcysteine, cysteine hydrochloride or glutathione) can form specific, self-assembled nanostructures when deposited on mica by dip coating. The mechanism of adsorption is based on molecule-to-substrate interactions between carboxylic groups and mica. Intermolecular cross-linking by hydrogen bonds was also observed due to the donor-acceptor character of the functional groups. The texture of supramolecular nanostructures formed by the studied materials on mica was analysed with atomic force microscopy and their specific surface energy was estimated by contact angle measurements. Significant differences in the surface roughness, thickness and the arrangement of macromolecules were noted

SUBMITTER: Nowacka M 

PROVIDER: S-EPMC4685769 | biostudies-literature | 2015

REPOSITORIES: biostudies-literature