Journal
PURE AND APPLIED CHEMISTRY
Volume 81, Issue 4, Pages 635-647Publisher
WALTER DE GRUYTER GMBH
DOI: 10.1351/PAC-CON-08-09-11
Keywords
nanomaterials; nanoparticles; photochemistry; benzophenone; particle synthesis
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The photochemistry of aromatic ketones through the Norrish type I cleavage of benzoins and via photoreduction generates ketyl radicals that readily reduce many metal ions, including silver and gold. Reduction to Au(0) and Ag(0) leads to the spontaneous formation of nanoparticles (NPs) in aqueous or micellar solutions. Careful consideration of kinetic factors to minimize triplet quenching by metal ions can lead to rapid NP generation. These materials are quite stable and have interesting reactivities due to the essentially unprotected characteristics of the surface.
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