Novel polyelectrolyte complexes based on diazo-resins

Polyelectrolyte complexes containing diazonium groups (PEC‐N2) with a high ionic crosslinking rate were prepared as a precipitate by mixing the diazo‐resin with polyanion solutions. The photochemical decomposition of the complexes from different polyanions was studied. It was shown that PEC‐N2 exhibit high photosensitive properties. Under irradiation of UV light, the complexes which can be dissolved in ternary mixtures such as H2O‐DMF‐LiCl,H2O‐DMF‐NaSCN or H2O‐DMF‐ZnCl2 (DMF: N,N‐dimethylformamide) become indissoluble since the crosslinking structure of the complexes changes from ionic to covalent.