Preparation of Water-Soluble Mercaptocarboxylated Gold Nanoparticles and Their Dispersion Properties
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- Naoe Kazumitsu
- Department of Chemical Engineering, Nara National College of Technology
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- Yamanaka Koichiro
- Department of Chemical Engineering, Nara National College of Technology
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- Takeuchi Saori
- Department of Chemical Engineering, Nara National College of Technology
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- Kawagoe Mikio
- Department of Chemical Engineering, Nara National College of Technology
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- Imai Masanao
- Graduate School of Bioresource Sciences, Nihon University
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Water-soluble Au nanoparticles were prepared using the phase transfer method, and their dispersion properties were investigated. Using mercaptocarboxylic acids having various alkyl chain lengths as stabilizing agents, Au nanoparticles stably dispersed in aqueous solutions were obtained. The Au core size of the nanoparticles decreased with increasing alkyl chain length of mercaptocarboxylic acid. Dynamic lightscattering measurements showed that the size of dispersed Au nanoparticles coated with 6-mercaptohexanoic acid remained almost constant with changing solution pH, while Au nanoparticles coated with 15-mercaptopentadecanoic acid increased with decreasing solution pH, and completely precipitated at pH 5. These observations indicate that the dispersion behavior of the Au nanoparticles depends on the alkyl-chain length of the stabilizing agent, and that is sensitive to the solution pH in the case of the particles with longer alkyl chains.
収録刊行物
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- JOURNAL OF CHEMICAL ENGINEERING OF JAPAN
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JOURNAL OF CHEMICAL ENGINEERING OF JAPAN 45 (9), 789-792, 2012
公益社団法人 化学工学会
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詳細情報 詳細情報について
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- CRID
- 1390001204568482304
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- NII論文ID
- 130001858775
- 40019532302
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- NII書誌ID
- AA00709658
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- COI
- 1:CAS:528:DC%2BC3sXovVGqtg%3D%3D
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- ISSN
- 18811299
- 00219592
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- NDL書誌ID
- 024167546
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- 本文言語コード
- en
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- データソース種別
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- JaLC
- NDL
- Crossref
- CiNii Articles
- KAKEN
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- 抄録ライセンスフラグ
- 使用不可