Fig. 1: Photooxidation products of KCD by TA.
From: Efficient 3D printing via photooxidation of ketocoumarin based photopolymerization
a Proposed products during the photooxidation of KCD by TA upon visible light irradiation in the presence of water (remained in the monomer and solvent). b Experimental (blue line) and simulated (red line) electron paramagnetic resonance (EPR, EMXmicro, Bruker) signals that were generated during the photooxidation of KCD by TA. c Representative changes of chemical shifts in the 1H-NMR spectra (Ascend, Bruker) when converting KCD (red line) to KCD_2 (blue line).
