Influence of pH and salt on the photocrosslinking in polyelectrolyte thymine-containing films

SOFIA TRAKHTENBERG; RAMYA KUMAR; JASON BIANCHINI; SAVIN THOR; DEBORA M. MARTINO; JOHN C. WARNER

Journal of Macromolecular Science, Part A: Pure and Applied Chemistry

Año: 2007 vol. 44 p. 1311 - 1315

Photocrosslinking of thymine-based water-soluble polymer films was investigated at varying preparation conditions. Adding salt or decreasingthe pH of the solution from which the films were cast resulted in the decreased efficiency of photoimmobilization, while increasing thepH was found to increase the photoimmobilization efficiency. A mechanistic rationale for the observed effects is proposed.