Design of complex molecular structures based on 2- and 4-vinylpyridine copolymers

Abstract

It is known that activation of P(2-VP) and P(4-VP) macromolecules by allyl derivatives of Me (Cr, W) or by metal-organic compounds of Li or Mg leads to formation of activity centers giving possibility for further growth of macromolecules due to side chains growth. It was shown by the authors, that activity of 4-VP groups is greater than that of 2-VP ones. We believe that varying the ratio between 2-and 4-VP in 2-4-VP copolymer it is possible to vary the number of activity centers in copolymer macromolecule and thus to regulate the number of side chains of this macromolecule. P(2-4-VP) copolymers with different content of 2-and 4-VP and also P(2-VP) and P(4-VP) samples were synthesized by free-radical polymerization under the same conditions and used as a core in formation of hybrid macromolecules with tributyl acrilate side chains. Data obtained show that following to this approach we get macromolecules with different architecture. Analysis of polymers and copolymers was carried out by molecular hydrodynamic methods (sedimentation analysis, translational diffusion, viscometry), MTA, NMR.