期刊
MATERIALS CHEMISTRY AND PHYSICS
卷 139, 期 1, 页码 100-106出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.matchemphys.2012.12.061
关键词
Metals; Nanostructures; Chemical synthesis; Optical properties
资金
- ANPCYT [PICT 2010-00825]
- UBA, Programacion Cientifica [20020100100719]
- CONICET [2195/09]
We have grown silver prisms and pentagonal bipyramids, induced by plasmon excitation on a colloidal solution under the irradiation of light emitting diodes of different colors. Two methods of synthesis of the seeds were tested and their growth evolution recorded, in order to analyze the effect of the chemical synthesis and the color of the irradiation on the morphology and size of the final product. We show that the conversion rate into anisotropic nanoparticles is determined by the chemical environment and the shift of the irradiation wavelength with respect to the plasmon resonance of the seeds. The conversion rate defines the final morphology of the nanoparticles, whereas the size of the nanoparticles is univocally determined by the wavelength of irradiation, irrespective of the method to prepare the seed solution. (C) 2013 Elsevier B.V. All rights reserved.
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