2011 Fiscal Year Final Research Report
Rotational diffusion dynamics measurements of single aggregates existing at liquid/ liquid interfaces by using non-imaging light of optical microscope
| Project/Area Number |
22655020
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| Research Category |
Grant-in-Aid for Challenging Exploratory Research
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| Allocation Type | Single-year Grants |
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| Research Field |
Analytical chemistry
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| Research Institution | Osaka University (2011)
Hiroshima University (2010) |
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Principal Investigator |
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| Project Period (FY) |
2010 – 2011
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| Keywords | 液液界面 / 単一会合体 / 顕微鏡 / 回転拡散ダイナミクス / ブラウン運動 / 散乱ス散乱スペクトル / 金コロイド |
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| Research Abstract |
Gold colloids of 4-20 nm in size were used as samples in the present study. An organic solvent and the aqueous gold colloidal solution were put in a thin-layer two-phase microcell, and the adsorption and the Brownian motion of the gold nanoparticles were examined by the total-internal reflection laser scattering method. As the result, the gold nanoparticles were adsorbed to the interfaces and they were aggregated there. Furthermore, the rotational dynamics measurements of the single aggregates at the interfaces clarified that they were rotated in-plane and out-of-plane direction at the interfaces.
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