Novel Copper Photoredox Catalysts for Polymerization: An In Situ Synthesis of Metal Nanoparticles

Polymers - Tập 12 Số 10 - Trang 2293
Haja Tar1, Tahani I. Kashar2, Noura Kouki1, Reema Aldawas1, Bernadette Graff3, Jacques Lalevée3
1Department of Chemistry, College of Science, Qassim University, King Abdulaziz Rd, Buraydah, Qassim 1162 SA, Saudi Arabia
2Department of Chemistry, Faculty of Science, Menoufia University, Shebin El-Kom, 32511, Egypt
3Institut de Science des Matériaux de Mulhouse IS2M – UMR CNRS 7361 – UHA, 15, Rue Jean Starcky, 68057 Mulhouse Cedex, France

Tóm tắt

The copper II complex (HLCuCl) carrying 2,4 dinitrophenylhydrazone (L) is synthesized and evaluated as a new photoredox catalyst/photoinitiator in combination with triethylamine (TEA) and iodonium salt (Iod) for the radical polymerization of ethylene glycol diacrylate during exposure to visible light using a photoreactor at 419 nm. The copper complex reactivity with TEA/Iod salt/gold chloride showed a good production and stability of gold nanoparticles. Finally, the high performance of Cu (II) complex for radical photopolymerization incorporating gold nanoparticles is provided. The photochemical mechanisms for the production of initiating radicals are studied using cyclic voltammetry. Polymer nanocomposites containing gold nanoparticles (Au NPs) in situ photogenerated during the irradiation process were prepared. The formation of Au NPs inside the polymer matrix was through UV–Vis and EDS/SEM analyses.

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