Observation on growth process of gold Y- and phi-shaped nanoparticles in solutions.

Observation on growth process of gold Y- and phi-shaped nanoparticles in solutions. Research Abstract Details 

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Observation on growth process of gold Y- and phi-shaped nanoparticles in solutions. Abstract Text:

Sung Koo Kang,Inhee Choi,Jeongjin Lee,Younghun Kim,Jongheop Yi,Sung Koo Kang,Inhee Choi,Jeongjin Lee,Younghun Kim,Jongheop Yi,

The morphological evolution of gold (Au) nanoparticles is demonstrated via TEM and UV-vis spectroscopy in a real-time basis. Y-shaped and phi-shaped Au nanoparticles were prepared by a seed mediated method at 0 degrees C. The evolution of shape ranging from spheres to Y- and phi-shapes was characterized by UV-vis spectroscopy. For the spherical particles, the corresponding transverse plasmon absorption (540 nm) was observed at the initial growth stage. As further growth proceeded, new peaks appeared at ca. 620 nm and ca. 700-1000 nm, which was to the characteristic peak of Y-shaped and phi-shaped nanoparticles, respectively. In addition, all intermediate steps were observed in the morphology change by TEM. At the initial step, spherical particles with 20 nm size were generated and the particles were gradually evolved from tiny triangular shape or I-shape to Y- and phi-shape. In this study, the growth mechanism of Au nanoparticles was investigated by the characterization of optical properties as well as morphologies with respect to reaction time.

Observation on growth process of gold Y- and phi-shaped nanoparticles in solutions. Publishing Authors By Initials

SK Kang,I Choi,J Lee,Y Kim,J Yi,SK Kang,I Choi,J Lee,Y Kim,J Yi,

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Observation on growth process of gold Y- and phi-shaped nanoparticles in solutions. Journal Published:

PUBLICATION TYPE: Research Support, Non-U.S. Gov

Journal: Journal of nanoscience and nanotechnology

VOLUME: 7

Page Numbers: 3823-6

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ISSN: 1533-4880

DAY: 30

MONTH: Nov

YEAR: 2007

Observation on growth process of gold Y- and phi-shaped nanoparticles in solutions. Information

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LANGUAGE: eng

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Grant and Affiliation Information for Observation on growth process of gold Y- and phi-shaped nanoparticles in solutions.

AFFILIATION: School of Chemical Engineering, Institute of Chemical Processes, Seoul National University, Seoul 151-742, Korea.

Country: United States

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MEDLINETA: J Nanosci Nanotechnol

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