An anisotropic snowflake-like structural assembly of polymer-capped gold nanoparticles

Harshala Parab; Cheulhee Jung; Min Ah Woo; Hyun Gyu Park

doi:10.1007/s11051-010-9975-5

An anisotropic snowflake-like structural assembly of polymer-capped gold nanoparticles

Harshala Parab, Cheulhee Jung, Min Ah Woo, Hyun Gyu Park

Research output: Contribution to journal › Article › peer-review

19 Citations (Scopus)

Abstract

Snowflake-like structural assembly of isotropic gold nanoparticles (GNPs) is reported. A modified polyamine method has been employed to synthesize positively charged GNPs in presence of a polymeric metaphosphate. This process yields fascinating dendritic self-assembled morphologies. Structural characterization revealed that there was aggregation of crystalline GNPs. The aggregates of GNPs formed in the initial stage of synthesis are assumed to act as the bulging seeds for final growth of complex morphologies at nanometer to micrometer length scale. Self-assembly of GNPs was found to be greatly influenced by the concentration of gold precursor. Diffusion limited aggregation of GNPs is suggested as the plausible mechanism for this nanoparticle selforganization process.

Original language	English
Pages (from-to)	2173-2180
Number of pages	8
Journal	Journal of Nanoparticle Research
Volume	13
Issue number	5
DOIs	https://doi.org/10.1007/s11051-010-9975-5
Publication status	Published - 2011 May
Externally published	Yes

Keywords

Anisotropic
Dendrimers
Gold nanoparticles
Polyamine
Self-assembly
Snowflake-like
Synthesis

ASJC Scopus subject areas

Bioengineering
Chemistry(all)
Atomic and Molecular Physics, and Optics
Modelling and Simulation
Materials Science(all)
Condensed Matter Physics

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10.1007/s11051-010-9975-5

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title = "An anisotropic snowflake-like structural assembly of polymer-capped gold nanoparticles",

abstract = "Snowflake-like structural assembly of isotropic gold nanoparticles (GNPs) is reported. A modified polyamine method has been employed to synthesize positively charged GNPs in presence of a polymeric metaphosphate. This process yields fascinating dendritic self-assembled morphologies. Structural characterization revealed that there was aggregation of crystalline GNPs. The aggregates of GNPs formed in the initial stage of synthesis are assumed to act as the bulging seeds for final growth of complex morphologies at nanometer to micrometer length scale. Self-assembly of GNPs was found to be greatly influenced by the concentration of gold precursor. Diffusion limited aggregation of GNPs is suggested as the plausible mechanism for this nanoparticle selforganization process.",

keywords = "Anisotropic, Dendrimers, Gold nanoparticles, Polyamine, Self-assembly, Snowflake-like, Synthesis",

author = "Harshala Parab and Cheulhee Jung and Woo, {Min Ah} and Park, {Hyun Gyu}",

note = "Funding Information: Acknowledgments Financial support for this investigation was provided by Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Education, Science and Technology (MOST, No. 2009-008-0602 & No. R01-2007-000-11851-0) and the Brain Korea 21 (BK21) program.",

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doi = "10.1007/s11051-010-9975-5",

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AU - Parab, Harshala

AU - Jung, Cheulhee

AU - Woo, Min Ah

AU - Park, Hyun Gyu

N1 - Funding Information: Acknowledgments Financial support for this investigation was provided by Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Education, Science and Technology (MOST, No. 2009-008-0602 & No. R01-2007-000-11851-0) and the Brain Korea 21 (BK21) program.

PY - 2011/5

Y1 - 2011/5

N2 - Snowflake-like structural assembly of isotropic gold nanoparticles (GNPs) is reported. A modified polyamine method has been employed to synthesize positively charged GNPs in presence of a polymeric metaphosphate. This process yields fascinating dendritic self-assembled morphologies. Structural characterization revealed that there was aggregation of crystalline GNPs. The aggregates of GNPs formed in the initial stage of synthesis are assumed to act as the bulging seeds for final growth of complex morphologies at nanometer to micrometer length scale. Self-assembly of GNPs was found to be greatly influenced by the concentration of gold precursor. Diffusion limited aggregation of GNPs is suggested as the plausible mechanism for this nanoparticle selforganization process.

AB - Snowflake-like structural assembly of isotropic gold nanoparticles (GNPs) is reported. A modified polyamine method has been employed to synthesize positively charged GNPs in presence of a polymeric metaphosphate. This process yields fascinating dendritic self-assembled morphologies. Structural characterization revealed that there was aggregation of crystalline GNPs. The aggregates of GNPs formed in the initial stage of synthesis are assumed to act as the bulging seeds for final growth of complex morphologies at nanometer to micrometer length scale. Self-assembly of GNPs was found to be greatly influenced by the concentration of gold precursor. Diffusion limited aggregation of GNPs is suggested as the plausible mechanism for this nanoparticle selforganization process.

KW - Anisotropic

KW - Dendrimers

KW - Gold nanoparticles

KW - Polyamine

KW - Self-assembly

KW - Snowflake-like

KW - Synthesis

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JF - Journal of Nanoparticle Research

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ER -

An anisotropic snowflake-like structural assembly of polymer-capped gold nanoparticles

Abstract

Keywords

ASJC Scopus subject areas

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