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| Title: | LIGHT INDUCED METAL NANOPARTICLE FORMATION (M=Ag, Au, Cu, Pd, Pt) IN AQUEOUS SOLUTIONS AND POLYMER FILMS COMPOSED OF SPEEK-PVA | |
| DOI No: | 10.1142/9789812701879_0043 | |
| Source: | CLUSTERS AND NANO-ASSEMBLIES (pp 371-377) | |
| Author(s): | A. S. KORCHEV
Department of Chemistry, Auburn University, Auburn, AL 36849, USA M. SARTIN Department of Chemistry, Auburn University, Auburn, AL 36849, USA G. MILLS Department of Chemistry, Auburn University, Auburn, AL 36849, USA B. L. SLATEN Department of Consumer Affairs, Auburn University, Auburn, AL 36849, USA W. F. GALE Materials Research and Education Center, Auburn University, Auburn, AL 36849, USA |
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| Abstract: | Formation of Ag, Au, Cu, Pd and Pt nanoparticles has been observed in solutions containing sulfonated poly (ether-ether) ketone and poly (vinyl alcohol) upon irradiation with 350 nm photons. Alternatively, crosslinking of the polymers allowed fabrication of thin films that possess high light-sensitivity and ion exchange capabilities. Adsorbed Ag+ ions are efficiently photoreduced in films, producing metal nanoparticles. In both films and solutions, reduction of metal ion precursors by polymeric alcohol radicals was the origin for the particle generation process. The polymer radicals were produced via photochemical H-abstraction from PVA molecules by the excited carbonyl groups of SPEEK. The chemical nature of the metal ion plays a crucial role in the development kinetics of the metal crystallites. | |
| Full Text: | View full text in PDF format (322KB) | |
| TOC: | Back to Table of Contents | |
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