Preparation of cationic gold nanoparticles in aqueous solutions of 2-aminoethanethiol hydrochloride

Takahito Kawano; Yukichi Horiguchi; Yasuro Niidome; Takuro Niidome; Sunao Yamada

doi:10.2116/bunsekikagaku.54.521

Preparation of cationic gold nanoparticles in aqueous solutions of 2-aminoethanethiol hydrochloride

Takahito Kawano, Yukichi Horiguchi, Yasuro Niidome, Takuro Niidome, Sunao Yamada

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

2 Citations (Scopus)

Abstract

Cationic gold nanoparticles were obtained by chemical reduction of tetrachloroaurate (AuCl₄^-) in the presence of the 2-aminoethanethiol (AET). Formation of colloidal gold nanoparticles was monitored by absorption spectroscopy, light scattering, and zeta potential measurements. Colloidal gold nanoparticles were obtained when the ratio of AuCl₄^- and AET was about 1:1.5. The mean size and the zeta potential of the nanoparticles was 34 ± 6 nm and + 44 ± 24 mV, respectively. The polyethyleneoxide compound terminated with a SH group (PEG-SH) increased the mean size of the nanoparticles (49 ± 18 nm), but decreased zeta potentials of the gold nanoparticles (+ 16 ± 7 mV). The PEG-SH was effective to stabilize the colloidal dispersion of the gold nanoparticles.

Original language	English
Pages (from-to)	521-526
Number of pages	6
Journal	bunseki kagaku
Volume	54
Issue number	6
DOIs	https://doi.org/10.2116/bunsekikagaku.54.521
Publication status	Published - Jun 2005
Externally published	Yes

All Science Journal Classification (ASJC) codes

Analytical Chemistry

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title = "Preparation of cationic gold nanoparticles in aqueous solutions of 2-aminoethanethiol hydrochloride",

abstract = "Cationic gold nanoparticles were obtained by chemical reduction of tetrachloroaurate (AuCl4-) in the presence of the 2-aminoethanethiol (AET). Formation of colloidal gold nanoparticles was monitored by absorption spectroscopy, light scattering, and zeta potential measurements. Colloidal gold nanoparticles were obtained when the ratio of AuCl4- and AET was about 1:1.5. The mean size and the zeta potential of the nanoparticles was 34 ± 6 nm and + 44 ± 24 mV, respectively. The polyethyleneoxide compound terminated with a SH group (PEG-SH) increased the mean size of the nanoparticles (49 ± 18 nm), but decreased zeta potentials of the gold nanoparticles (+ 16 ± 7 mV). The PEG-SH was effective to stabilize the colloidal dispersion of the gold nanoparticles.",

author = "Takahito Kawano and Yukichi Horiguchi and Yasuro Niidome and Takuro Niidome and Sunao Yamada",

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T1 - Preparation of cationic gold nanoparticles in aqueous solutions of 2-aminoethanethiol hydrochloride

AU - Kawano, Takahito

AU - Horiguchi, Yukichi

AU - Niidome, Yasuro

AU - Niidome, Takuro

AU - Yamada, Sunao

PY - 2005/6

Y1 - 2005/6

N2 - Cationic gold nanoparticles were obtained by chemical reduction of tetrachloroaurate (AuCl4-) in the presence of the 2-aminoethanethiol (AET). Formation of colloidal gold nanoparticles was monitored by absorption spectroscopy, light scattering, and zeta potential measurements. Colloidal gold nanoparticles were obtained when the ratio of AuCl4- and AET was about 1:1.5. The mean size and the zeta potential of the nanoparticles was 34 ± 6 nm and + 44 ± 24 mV, respectively. The polyethyleneoxide compound terminated with a SH group (PEG-SH) increased the mean size of the nanoparticles (49 ± 18 nm), but decreased zeta potentials of the gold nanoparticles (+ 16 ± 7 mV). The PEG-SH was effective to stabilize the colloidal dispersion of the gold nanoparticles.

AB - Cationic gold nanoparticles were obtained by chemical reduction of tetrachloroaurate (AuCl4-) in the presence of the 2-aminoethanethiol (AET). Formation of colloidal gold nanoparticles was monitored by absorption spectroscopy, light scattering, and zeta potential measurements. Colloidal gold nanoparticles were obtained when the ratio of AuCl4- and AET was about 1:1.5. The mean size and the zeta potential of the nanoparticles was 34 ± 6 nm and + 44 ± 24 mV, respectively. The polyethyleneoxide compound terminated with a SH group (PEG-SH) increased the mean size of the nanoparticles (49 ± 18 nm), but decreased zeta potentials of the gold nanoparticles (+ 16 ± 7 mV). The PEG-SH was effective to stabilize the colloidal dispersion of the gold nanoparticles.

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Preparation of cationic gold nanoparticles in aqueous solutions of 2-aminoethanethiol hydrochloride

Abstract

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