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Photocatalytic Coalescence of Functionalized Gold Nanoparticles

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journal contribution
posted on 02.02.2010, 00:00 by M. Consuelo Cuquerella, Salvador Pocoví-Martínez, Julia Pérez-Prieto
A novel strategy for the synthesis of chromophore-functionalized AuNPs with a narrow size distribution is reported. It consists of increasing the size of preprepared NPs by means of a fast (second scale) and clean (light and an organic photocatalyst) method. The results agree with thiolate ligand liberation from the NP surface promoted by photogenerated radicals. This lets gold cores come together and finally coalesce.