Dispersion and STM Characterization of Au-CdSe Nanohybrids on Au（111）

Dispersion and STM Characterization of Au-CdSe Nanohybrids on Au（111）

We report the dispersion and scanning tunneling microscopy （STM） characterization of iso- lated Au-CdSe nanohybrids on atomically fiat Au（111） through surface modifications. The top terminal groups of spacer molecules self-assembled on the surface are found critical for locking the nanohybrids into...

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Veröffentlicht in:化学物理学报 2012, Vol.25 (2), p.231-234
1. Verfasser: Bo Gao Yan-min Kuang Yuan Liao Zhen-chao Dong
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Sprache:chi
Schlagworte:
CdSe
STM
分散
扫描隧道显微镜
溅射技术
表征
表面改性
金
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description We report the dispersion and scanning tunneling microscopy （STM） characterization of iso- lated Au-CdSe nanohybrids on atomically fiat Au（111） through surface modifications. The top terminal groups of spacer molecules self-assembled on the surface are found critical for locking the nanohybrids into a well-separated state. The STM results indicate that both thiol and carboxylic terminals are effective in this aspect by making strong interaction with the Au portions of the nanohybrids. An argon ion sputtering technique is also proposed to clean up organic contaminants on the surface for improved STM imaging of individual Au-CdSe nanohybrids. These observations help to enrich technical approaches to dispersing individual nanostructures on the surface and provide opportunities to explore their local electroluminescent and energy transfer properties at the nanoscale.
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source Alma/SFX Local Collection
subjects CdSe
STM
分散
扫描隧道显微镜
溅射技术
表征
表面改性
金
title Dispersion and STM Characterization of Au-CdSe Nanohybrids on Au（111）
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