Synthesis and Structural Characterization of Novel Urethane-Dimethacrylate Monomers with Two Quaternary Ammonium Groups Based on Cycloaliphatic Diisocyanates

Diseases such are caries affect approximately 25% of the worldwide population. Such a state requires novel, antibacterial materials. This research aimed to synthesize and characterize the structures of two urethane-dimethacrylate monomers showing possible antibacterial activity for dental composite restorative materials (DCRMs). The monomers were based on isophorone diisocyanate (IPDI) and dicyclohexylmethane 4,4′-diisocyanate (CHMDI). The structures of the monomers and their key elements were confirmed with the application of spectroscopy methods. Nuclear Magnetic Resonance Spectroscopy (1H and 13C NMR) and Fourier Transform Infrared Spectroscopy (FTIR) were applied. The monomers were synthesized and their structures were confirmed with the abovementioned techniques.