ИСТИНА

We develop a facile route toward block (including multiblock) and graft copolymers with various functional groups based on the reactions of ring-opening metathesis polymerization and macromolecular cross-metathesis. The presence of unsaturated C=C bonds in the main chain of the copolymers opens the way for their further modification. In this study a number of 5-substituted cyclooctenes with ester groups are synthesized and then polymerized to obtain novel graft copolymers with a hydrophobic backbone and hydrophilic pending groups. Ru-carbene complexes of Grubbs of I, II, and III generations are used as the initiators of the metathesis reaction. A discussion on the influence of the catalyst and substituent types on the solubility, chain structure, and thermal and surface characteristics of the obtained copolymers is presented. Water contact angle decreased from 97 for polyoctenamer to 45 for tetraPEG-substituted one.