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Citation: WANG Chun-Rong, FANG Yun, LI Bo. Self-Assembly of Multipod-like ld Nanoparticles in the Soft Template of SDS-PVP Clusters[J]. Acta Physico-Chimica Sinica, ;2008, 24(01): 183-186. doi: 10.3866/PKU.WHXB20080134 shu

Self-Assembly of Multipod-like ld Nanoparticles in the Soft Template of SDS-PVP Clusters

1.
School of Chemical and Material Engineering, Jiangnan University, Wuxi 214122, Jiangsu Province, P. R. China

Received Date: 2 July 2007
Available Online: 29 October 2007

ld crystals are able to self-assemble into multipod-like nanoparticles through reducing HAuCl4 by sodium citrate in the soft template composed of sodium dodecyl sulfate (SDS)-polyvinylpyrrolidone (PVP) clusters assisted by microwave irradiation. TEM image displayed directly that the reduced products possessed multipod-like morphology with equivalent diameter around 50 nm, and electron diffraction (ED) pattern indicated that the ld crystals were polycrystalline. XRD pattern suggested that the multipod-like nanoparticles were self-assembled into tiny pure ld crystals with diameter about 12.7 nm, which were grown preferentially along (111) lattice plane. The cluster of SDS-PVP had great influence on the size and shape of ld nanoparticles. At a fixed level of PVP, as the concentration of SDS increased, the shape of ld nanoparticles changed from sphere to multipod, and UV-Vis absorption spectrum of ld nanoparticles showed that absorption bands at 800 nm became stronger. The preferred multipod-like ld nanoparticles could be obtained easily and quickly by controlling the composition of the soft template of SDS-PVP clusters.
- Multipod-like; ld nanoparticle; Soft template; SDS; PVP
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