INTRAMOLECULAR MOBILITY AND INTRAMOLECULA R INTERACTIONS IN HETEROPOLYMERS IN SOLUTION

Structuration in solutions of N-vinylpyrrolidone-based heteropolymers containing functional groups that are capable of forming intramolecula r contacts was studied by polarized luminescence. For copolymers of N- vinylpyrrolidone with unsaturated carboxylic acids as an example, the effect of the distribution of proton-donating carboxylic acid groups o n the formation of the internal structure of macromolecules by intrach ain hydrogen bonding was demonstrated. For heteropolymers containing l ong alkyl radicals and cationic groups in the side chains, the importa nt role of hydrophobic interactions on the molecular mobility of macro molecules in solution was established.