STM-Induced Light Emission Investigation of Individual Self-Decoupled Molecules

研究了1，8，13-三（巯基甲基）-三蝶烯（TMMT）在Ag（111）表面的自组装.实验和模拟STM图像显示了三倍的突起归因于直立取向的TMMT分子，自组装成两个包装配置。高度有序结构的偏好表明分子间的相互作用程度很高。DFT计算表明，三蝶烯，亚甲基桥，硫醇是负责分子间的相互作用，手性和基板相互作用分别。这项工作揭示了三维分子之间的分子间相互作用，其中相互作用力不限于单个平面。

A study of self-assembled 1,8,13-tris(mercaptomethyl)-triptycenes (TMMT) on Ag(111) was carried out. Experimental and simulated STM images showed a threefold protrusion attributable to the upright oriented TMMT molecule, which self-assembles into two packing configurations. Preference of highly ordered structures suggests a substantial degree of intermolecular interactions. DFT calculations reveal that triptycenes, methylene bridges, and thiols are responsible for the intermolecular interaction, chirality, and substrate interaction respectively. This work reveals intermolecular interactions between three-dimensional molecules, in which the interacting forces are not confined to a single plane.