Carbazole modified ketonic resins

Purpose - The purpose of this paper is to report the synthesis of resins having conducting and fluorescence properties, with carbazole and oligocarbazole with a one step method of in situ modification of ketonic resin. Cyclohexanone-formaldehyde (CFR), and acetophenone-formaldehyde (AFR) resins were in situ modified with carbazole in the presence of sodium hydroxide. Design/methodology/approach - Carbazole modified ketonic resins were synthesised by the condensation reaction of Cz, formaldehyde and ketone. Oligo carbazole was synthesised by redox reaction of carbazole and ceric ammonium nitrate (CAN). Then, for the in situ modification of oligo carbazole modified ketonic resin, reaction mixture of oligocarbazole carbazole was added to the cyclohexanone/formaldehyde solution. Findings - The carbazole modified cyclohexanone-formaldehyde and acetophenone formaldehyde resins have conductivity values of 10(-5)-10(-6) S/cm and may be considered as semi-conductive ketonic resins. These new carbazole modified ketonic resins (CCzFR, ACzFR) have fluorescence properties. Research limitations/implications - This study focused on obtaining a conductive and fluorescence resin using a carbazole monomer which is an insulator. Practical implications - This study provides technical information for the synthesis of fluorescence comonomer. Originality/value - New CCzFR, ACzFR comonomers were synthesised. These comonomers have higher Tm values than CFR and AFR alone and also have fluorescence property.