Au particle deposition onto self-assembled monolayers of thiol and dithiol molecules
Au particle deposition onto self-assembled monolayers of thiol and dithiol molecules
复制标题
金粒子沉积到硫醇和二硫醇分子的自组装单层上
DOI：
10.1016/s0169-4332(98)00177-9
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发表时间：
1998
影响因子：
6.7
通讯作者：
H. Nejoh
中科院分区：
文献类型：
--
作者：
T. Ohgi;H. Sheng;H. Nejoh
用扫描隧道显微镜研究了空气中金在硫醇(HS(CH2)7CH3)和二硫醇(HS(CH2)nsh，n=6，8，10)分子自组装单分子膜上的沉积。在硫醇的情况下，发现蒸发的金原子穿透并在自组装膜下形成单原子高度岛。相反，金沉积在二硫醇上导致了金颗粒在自组装膜表面的形成。每个Au粒子估计有∼200个原子，这个大小与Au覆盖率无关，至少低于1ML。用扫描隧道谱研究了薄膜的库仑阻塞等电学性质。
Gold depositions on self-assembled monolayers (SAMs) of thiol (HS(CH2)7CH3) and dithiol (HS(CH2)nSH, n=6, 8, 10) molecules were investigated by a scanning tunneling microscope in air. In the case of thiols, evaporated gold atoms were found to penetrate and form monoatomic height islands under the SAMs. On the contrary, gold deposition onto the dithiols resulted in the formation of the gold particles on top of the SAMs. Each Au particle is estimated to have ∼200 atoms and this size is independent of Au coverage, at least below 1 ML. The electrical properties such as Coulomb blockade were also studied by scanning tunneling spectroscopy.