Dong Wook Chang and Liming Dai 2007 Nanotechnology 18 365605 doi:10.1088/0957-4484/18/36/365605
Photo-induced formation and self-assembling of gold nanoparticles in aqueous solution of amphiphilic dendrimers with oligo(p-phenylene vinylene) core branches and oligo(ethylene oxide) terminal chains
Dong Wook Chang and Liming Dai1
Show affiliationsDendritic molecules with oligo(p-phenylenevinylene) core branches and oligo(ethylene oxide) terminal chains were found to be highly susceptible to the singlet oxygen mediated photooxidation process. These photosensitive amphiphilic dendrimers were used as both the photo-reducing agent and particle stabilizer for the formation of gold nanoparticles in an aqueous solution of hydrogen tetrachloroaurate (III) hydrate (HAuCl4
3H2O) at ambient atmosphere. Gold nanoparticles produced at high molar ratios of the amphiphilic dendrimer to HAuCl4 (>0.5) were demonstrated to be stable for several months, whereas relatively large hexagonal/triangular gold single-crystal films and self-assembled hollow fiber clusters were observed at lower molar ratios of the amphiphilic dendrimer to HAuCl4.
- PACS
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81.07.-b Nanoscale materials and structures: fabrication and characterization
- Subjects
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Soft matter, liquids and polymers
- Dates
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Issue 36 (12 September 2007)
Received 23 April 2007, in final form 29 June 2007
Published 14 August 2007
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Photo-induced formation and self-assembling of gold nanoparticles in aqueous solution of amphiphilic dendrimers with oligo(p-phenylene vinylene) core branches and oligo(ethylene oxide) terminal chains
Dong Wook Chang and Liming Dai 2007 Nanotechnology 18 365605
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