抄録
Potential-driven movements of a surface-modified Au nanoparticle at a Au(111) electrode/aqueous solution interface were examined. An interfacial capacity peak due to the reorientation of terminal 4-pyridyl groups of the surface modifier layer was observed when the Au(111) electrode was touched to the spread film of the particles on the surface of an aqueous solution at lower surface pressures than equilibrium spreading pressure. When the spread amount was increased, appearance of a capacity response presumably due to partial adsorption-desorption of the particles was observed. Implications of the results of electrochemical and electroreflectance measurements were discussed in regards to the reversible movement of the particles. [DOI: 10.1380/ejssnt.2005.141]
