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| - Photofragmentation of Phase-Transferred Gold Nanoparticles by Intense Pulsed LaserLight
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| - Gold nanoparticles with an average diameter of ∼20 nm were prepared in an aqueous solution by a wetchemistry method. The parent gold nanoparticles were then capped with a 4-aminothiophenol protecting layerand transferred into toluene by tuning the surface charge of the modified nanoparticles. Gold nanoparticlesbefore and after phase transfer were subjected to photofragmentation by a pulsed 532 nm laser. The effectsof solvent properties and surface chemistry on the photofragmentation of the gold nanoparticles have beeninvestigated. Fast photofragmentation has been observed in the organic solvent in which the dielectric constant,heat capacity, and thermal conductivity are lower. The results suggest new approaches for the preparation ofvery small gold clusters from gold nanoparticles.
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