LOW-MOLAR-MASS AND POLYMERIC DIAZOSULFONATES AS DISGUISED DIAZONIUM IONS FOR APPLICATION AS ANALYTICAL REAGENTS IN QUICK ASSAYS

Diazosulfonates decompose in water upon UV irradiation, forming diazon ium salts as intermediates. Therefore, these compounds can be consider ed as diazonium ion sources, which are thermally very stable, easy to handle, and suitable for longtime storage. Several low-molar-mass diaz osulfonates have been used in UV initiated azo coupling reactions with a large variety of phenols, naturally occurring substances, and drugs and the results were compared to those obtained with free diazonium i ons. The conditions for a successful coupling reaction and the UV abso rptions of the products were studied in detail. The concept could be t ransferred to polymers containing diazosulfonate functional groups. A preliminary application test proved the suitability of these polymers as analytical reagents in quick assays.