Combination of photoinduced copper(i) catalyzed click chemistry and photosol-gel reaction for the synthesis of hybrid materialsElectronic supplementary information (ESI) available: The UV-vis spectra of ethyl 2-azidoprionate, the emission spectrum of the Hg-Xe lamp, the photodegradation of ethyl 2-azidopropionate and simultaneous sol-gel photopolymerization of PDMOS and photoinduced click reaction followed by RT FTIR under a conveyor belt. See DOI: 10.1039/c6py01495j

Synthesis of hybrid materials is an important topic of research for the design of new materials and development of industrial applications. Among the numerous pathways reported in the literature, a concomitant light induced sol-gel process and organic photopolymerization has recently appeared to be a promising alternative. In light of the potential benefits of copper catalyzed azide-alkyne cycloaddition (CuAAC), we investigate in this work a novel one-step methodology for preparing hybrid materials by combining photoinduced sol-gel polymerization and the light-induced CuAAC reaction. Isopropylthioxanthone was used as a photosensitizer to prompt both generation of acid by reduction of iodonium salt and formation of Cu( i ) by reduction of Cu( ii ). Polymerization kinetics of the separated reactions were first investigated by real-time FTIR providing a clear picture of the mechanism. Then, both reactions were simultaneously monitored and both reactions were shown to occur concomitantly. We investigate in this work a novel one-step methodology for preparing hybrid materials by combining photoinduced sol-gel polymerization and light-induced CuAAC reaction.