Room temperature Coulomb staircase on pure and uniform surface-capped gold nanoparticles
1998; Elsevier BV; Volume: 287; Issue: 1-2 Linguagem: Inglês
10.1016/s0009-2614(98)00137-7
ISSN1873-4448
AutoresMing‐Yong Han, Lei Zhou, Chai Hoon Quek, Sam Fong Yau Li, Wei Huang,
Tópico(s)Electrochemical Analysis and Applications
ResumoA clear Coulomb staircase has been observed by using scanning tunneling microscopy in a new nanostructure with a surface-capped tunneling layer on the gold particle instead of a conventional tunneling thin film between the gold particle and substrate electrode. The occurrence of the Coulomb staircase was due to the pure and uniform surface-capped gold particles prepared by an efficient photochemical formation in a new kind of reducing nonaqueous system. As a comparison, the phenomenon cannot take place in the same nanostructure as above with the gold particle prepared by photochemical reduction in aqueous solution or typical chemical reduction.
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