Substituent Effect on Epitaxy of Mono-Molecular Layer on HOPG
Substituent Effect on Epitaxy of Mono-Molecular Layer on HOPG
复制标题
HOPG单分子层外延的取代效应
DOI：
10.1080/10587250008024903
复制
发表时间：
2000
期刊：
影响因子：
--
通讯作者：
Y. Yamashita
中科院分区：
文献类型：
--
作者：
Eiichi Fujiwara;S. Isoda;A. Hoshino;Takashi Kobayashi;Y. Yamashita
摘要用扫描隧道显微镜研究了四甲基双[1，2，5]噻二唑并对苯醌双（1，3-二硫杂环戊烯）（TMBTQBT）在石墨上的单层膜。发现TMBTQBT的单层晶格相对于（0001）石墨表现出点-线重合外延，并且与体晶中的相应层相比略有膨胀。这一结果表明，S···S分子间的相互作用或键在TMBTQBT单分子层是不强或不存在，与原始BTQBT的情况下。STM图像中的高对比度位置被发现对应于TMBTQBT分子的硫原子。
Abstract The monolayer of tetramethyl-bis[1,2,5]thiadiazolo-p-quinobis(1,3-dithiole) (TMBTQBT) on graphite was examined by scanning tunneling microscopy. The monolayer crystal lattice of TMBTQBT was found to exhibit point-on-line coincidence epitaxy with respect to the (0001) graphite, and expands a little compared with the corresponding layer in the bulk crystal. This result indicates that the S•••S intermolecular interaction or bond in the TMBTQBT monolayer is not strong or doesn't exist in contrast to the case of pristine BTQBT. The high contrast positions in the STM image were found to correspond to the sulfur atoms of the TMBTQBT molecule.