Nucleoside surface as platform for the control of surface hydrophobicity
Résumé
The control of the surface structures and surface energy is extremely important for various potential applications. Here, we report for the first time the synthesis of 3,4-ethylenedioxythiophene (EDOT) derivatives with a nucleoside linker for surface post-functionalization using the Huisgen reaction. Various alkynes are used in order to graft alkyl, aryl or perfluoroalkyl chains. We show the possibility to obtain both extremely high water contact angle (water > 130°) and extremely high water adhesion (parahydrophobic properties). The highest water contact angles are obtained with fluorinated but also surprisingly with phenanthrene. The extremely important results obtained with phenanthrene are explained by a change in the surface morphology after post-functionalization from cauliflower-like structures to fibrous structures. These key results are the first step in the study of the effect of nucleoside on the surface construction.