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
Preparation of Hydrophobically Modified Poly(amidoamine) Dendrimer-Encapsulated Gold Nanoparticles in Organic Solvents
✍ Scribed by Kunio Esumi; Tomoyuki Hosoya; Akihiro Suzuki; Kanjiro Torigoe
- Publisher
- Elsevier Science
- Year
- 2000
- Tongue
- English
- Weight
- 80 KB
- Volume
- 229
- Category
- Article
- ISSN
- 0021-9797
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✦ Synopsis
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 gold nanoparticles are encapsulated by the dendrimer. Copyright 2000 Academic Press.
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