Novel polyelectrolyte complexes based on diazo‐resins

Abstract

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 H,O-DMF-LiCl,H,O-DMF-NaSCN or H20-DMF-ZnCl2 (DMF N,N-dimethylformamide) become indissoluble since the crosslinking structure of the complexes changes from ionic to covalent.

Covalent modification of a glassy carbon surface by electrochemical oxidation of r-aminobenzene sulfonic acid in aqueous solution

“…Anionic Fe(III) tetrakis(p-sulfonatophenyl) porphyrin (FeTSPP) and variamine blue RT salt were obtained from Aldrich. Diazo-resins (DAR) were synthesized according to previously reported procedures [43,44]. All of the other chemicals were of reagent grade and used as received.…”

Self-assembled film based on carboxymethyl-β-cyclodextrin and diazoresin and its binding properties for methylene blue

“…Diazoresin (DR) was synthesized according to the literature procedures [21]. All solvents were commercial regent grade products and used without further being purified.…”

Stable multilayer films based on photoinduced interaction between polyoxometalates and diazo resin

“…Diazo resin (DR) was prepared by polycondensation of diphenylamine-4-diazonium chloride with paraformaldehyde in concentrated sulfuric acid according to Ref. [20] (g sp /C=0.15 dL/g, Mn=2600 g/mol). Quartz and silicon wafers were cleaned in a 80 8C piranha solution (H 2 SO 4 -H 2 O 2 70:30 v/v) for 20 min and rinsed in water.…”