Formation and Annealing Effect of Tolanethioacetate Self-Assembled Monolayers on Au(111)

Bulletin of the Korean chemical society

Jin Wook Han¹  Youngil Lee¹  Youngdo Jeong¹  Masahiko Hara¹  Changjin Lee¹  Nakjoong Kim¹  Jaegeun Noh¹ 

关键词: Self-assembled monolayers;    Tolanethioacetate;    Ordered domains;    Annealing effect;    Scanning tunneling microscopy;   

DOI  :  

学科分类：化学（综合）

来源: Korean Chemical Society

【 摘 要 】

Self-assembled monolayers (SAMs) were formed by adsorption of thioacetyl-terminated tolanethioacetate (TTA) on Au(111) in a 0.5-mM ethanol solution after one day immersion at room temperature. Molecular-scale STM imaging revealed that the TTA SAMs were composed of two mixed phases; an ordered phase with small domains describing a ( �? 2 )R30�? structure and a disordered phase. Interestingly, after annealing the precovered TTA SAMs on Au(111) at 90 ∑C for 1 h, the small ordered domains grew unidirectionally, resulting in the formation of unique rod-like domains, which were assigned a ( �? 2 )R7�? structure. These results will be very useful in understanding the formation and thermal behavior of TTA SAMs on gold surfaces.

【 授权许可】

Unknown