发明申请
- 专利标题: PROCESS FOR PRODUCTION OF COLLOIDAL GOLD AND COLLOIDAL GOLD
- 专利标题(中): 生产胶体金和胶体金的方法
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申请号: US12298313申请日: 2007-05-29
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公开(公告)号: US20100159471A1公开(公告)日: 2010-06-24
- 发明人: Junichi Taniuchi , Hirofumi Nakagawa , Koji Okamoto
- 申请人: Junichi Taniuchi , Hirofumi Nakagawa , Koji Okamoto
- 优先权: JP2006-156041 20060605
- 国际申请: PCT/JP2007/060919 WO 20070529
- 主分类号: G01N33/553
- IPC分类号: G01N33/553
摘要:
It is an object of the present invention to provide a method for producing gold colloid having a targeted particle size, a sharp particle size distribution and a uniform and perfect spherical shape. The present invention relates to a method for producing gold colloid including a nucleation step of forming nuclear colloidal particles by adding a first reducing agent to a first gold salt solution; and a growth step of growing nuclear colloid by adding a second gold salt and a second reducing agent to the solution of the nuclear colloidal particles, characterized in that the growth step is performed at least once; a citrate is used as the first reducing agent and an ascorbate is used as the second reducing agent; and the addition of the ascorbate in the growth step is performed simultaneously with addition of the second gold salt. According to the method for producing gold colloid of the present invention, gold colloid having a sharp particle size distribution and a uniform and perfect spherical shape can be obtained.
公开/授权文献
- US08048193B2 Method for producing gold colloid and gold colloid 公开/授权日:2011-11-01