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Baek, Jong-Beom
Center for Dimension-Controllable Organic Frameworks
Research Interests
  • Covalent Organic Frameworks (COFs), Carbon Nanotubes(CNTs), graphene, Energy Conversion and Storage

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Large clusters and hollow microfibers by multicomponent self-assembly of citrate stabilized gold nanoparticles with temperature-responsive amphiphilic dendrimers

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Title
Large clusters and hollow microfibers by multicomponent self-assembly of citrate stabilized gold nanoparticles with temperature-responsive amphiphilic dendrimers
Author
Chang, Dong WookChoi, Hyun-JungJung, Sun-MinDai, LimingBaek, Jong-Beom
Keywords
Amphiphilic dendrimers; Controlled self-assembly; Controlled size; Gold clusters; Gold nanoparticle; Gold Nanoparticles; Large clusters; Microfibers; Molar ratio; Multi-functional materials; Multicomponents; Oligoethylene oxide; P-phenylene vinylene; Potential applications; Shape and size; Stimuli-responsive; Surface enhanced Raman spectroscopy; Temperature-responsive; Terminal chain
Issue Date
2012-07
Publisher
ROYAL SOC CHEMISTRY
Citation
JOURNAL OF MATERIALS CHEMISTRY, v.22, no.26, pp.13365 - 13373
Abstract
Gold clusters with controlled sizes have been prepared by controlled self-assembly of citrate stabilized gold nanoparticles (AuNPs) with temperature-responsive luminescent amphiphilic dendrimers (Den 40) of oligo(p-phenylene vinylene) core branches and oligo(ethylene oxide) terminal chains. The shape and size of the resultant gold clusters depend strongly on the molar ratio of Den 40 to AuNPs. These gold clusters can further assemble into hollow microfibers decorated with AuNPs, which can be used as a promising substrate for surface enhanced Raman spectroscopy (SERS). The formation of spherical gold clusters and hollow microfibers simply by self-assembly of AuNPs and luminescent amphiphilic dendrimers (Den 40) could not only provide some useful insights for producing multifunctional materials via multicomponent self-assembly but also offer promise for potential applications of the self-assemblies in many systems, such as SERS and stimuli-responsive sensors.
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DOI
10.1039/c2jm31273e
ISSN
0959-9428
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ECHE_Journal Papers
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