Gold nano-particles of different sizes were synthesized using Frens method, the sizes of product were characterized by SEM and UV-Vis photometer. Nano-arraied gold electrodes were prepared by selfassembled method and investigated by SEM and electrochemical methods. It showes that the electron transfer is blocked after the electrode is covered by the SAM, and gold nano-particles can greatly improve the capability of the electron transfer across the SAM. This result will probably help to study the mechanism of electron transfer across the SAM.

Key words: NANOPHASE MATERIALS, SILICON, MICROELECTRODE, ELECTROCHEMISTRY, ELECTROLUMINESCENCE, TRANSMISSION ELECTRON MICROSCOPY, ULTRAVIOLET SPECTROPHOTOMETRY, SCANNING ELECTRON MICROSCOPES, PARTICLE DIAMETER