Stable nanosize gold and silver particles are spontaneously formed by reduction of aqueous metal salt solutions in the presence of sugar-persubstituted poly(amidoamine) dendrimers (sugar ball). Two sugar balls consisting of generations 3 and 5 are used. The nanoparticles are characterized by absorpt
Spontaneous Formation of Gold Nanoparticles in Aqueous Solution of Sugar-Persubstituted Poly(amidoamine)dendrimers
β Scribed by Esumi, Kunio; Hosoya, Tomoyuki; Suzuki, Akihiro; Torigoe, Kanjiro
- Book ID
- 126634907
- Publisher
- American Chemical Society
- Year
- 2000
- Tongue
- English
- Weight
- 136 KB
- Volume
- 16
- Category
- Article
- ISSN
- 0743-7463
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HAuCl(4) in aqueous solution was extracted to toluene or chloroform using a hydrophobically modified poly(amidoamine) dendrimer. Then, by reduction of Au(3+) ions with dimethylamineborane, gold nanoparticles in the size range of 2-4 nm were obtained in toluene or chloroform. It is suggested that gol
The spontaneous formation of Ag nanoparticles in a dimethylacetamide (DMAC) solution of poly(ethylene glycol) (PEG) was studied. FTIR analysis showed the formation of carbonyl groups, revealing that PEG acted as not only a protective agent but also a reducing agent in the formation of Ag nanoparticl