Photochemical imaging processes for the formation of metallic patterns on polymers |
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| Institution: | 1. College of Engineering, Department of Chemical and Materials Engineering, University of Kentucky, Lexington, KY 40506, USA;2. College of Pharmacy, Department of Pharmaceutical Sciences, University of Kentucky, Lexington, KY 40506, USA;3. College of Medicine, Department of Internal Medicine, University of Kentucky, Lexington, KY 40506, USA;1. College of Chemical Engineering, Inner Mongolia University of Technology, Huhhot 010051, China;2. Department of Applied Chemistry, College of Chemistry and Molecular Engineering, Peking University, Beijing 100,871, China;1. Fujian Provincial Key Laboratory of Marine Enzyme Engineering, College of Biological Science and Engineering, Fuzhou University, Fuzhou 350116, China;2. The College of Biotechnology, Tianjin University of Science and Technology, Tianjin 300457, China;3. Department of Biological Chemical Engineering, College of Chemical Engineering and Material Sciences, Tianjin University of Science and Technology, Tianjin 300457, China;4. Department of Biotechnology and Food Technology, Durban University of Technology, Durban, South Africa;5. The Key Lab for Fermentation Microbiology, Ministry of Education, Tianjin University of Science and Technology, Tianjin 300457, China;1. MLR Key Laboratory of Metallogeny and Mineral Assessment, Institute of Mineral Resources, Chinese Academy of Geological Sciences, Beijing 100037, China;2. Key Laboratory of Mineral Resources, Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing 100029, China;3. School of Earth Sciences and Resources, China University of Geosciences (Beijing), Beijing 100083, China;4. State Key Laboratory of Lithospheric Evolution, Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing 100029, China |
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| Abstract: | A homogeneous polymer for photometallization containing anthraquinonyl (AQ) and hydroxyalkyl groups was studied, where some of the hydroxyalkyl groups are complexed with copper carboxylate. On irradiation AQ is excited to an n → π* type of triplet state and subsequently reacts with a hydroxyalkyl group to form the semiquinone radical and the hydroxyalkyl radical. Almost all semiquinone radicals disproportionate to AQ and AQH2. Copper ions are reduced to catalytic nuclei by AQH2 as well as by hydroxy-alkyl radicals. Hydroxyalkyl radicals that are not consumed for reduction recombine to form a cross-linked polymer. |
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