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- W2034783852 abstract "Gold–dendrimer nanocomposites are prepared in aqueous solutions in the presence of poly(amidoamine)dendrimers (PAMAM) (generation 3 and 5) or poly(propyleneimine)dendrimers (PPI) (generation 3 and 4) by wet chemical NaBH4 method. Thus prepared gold–dendrimer nanocomposites are irradiated by laser at 532 nm. UV–vis absorption spectroscopy and transmission electron microscopy reveal that the gold nanoparticles grow with the laser irradiation time as well as the fluence of the laser; in particular, the gold nanoparticles prepared at lower concentrations of PAMAM dendrimer as well as lower generations of PAMAM grow significantly. On the other hand, in the case of PPI dendrimers, the gold nanoparticles hardly grow by irradiation. In addition, dynamic light-scattering measurements show that the laser irradiation markedly promotes the association of the gold–PAMAM G3 dendrimer nanocomposites compared to that of the gold–PAMAM G5 dendrimer nanocomposites, while the sizes of association for the gold–PPI G3, G4 dendrimer nanocomposites hardly change by laser irradiation." @default.
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- W2034783852 date "2003-12-01" @default.
- W2034783852 modified "2023-09-23" @default.
- W2034783852 title "Morphological change of gold–dendrimer nanocomposites by laser irradiation" @default.
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- W2034783852 doi "https://doi.org/10.1016/s0021-9797(03)00598-8" @default.
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