Unique domain structure of pi-conjugated tolanethioacetate self-assembled monolayers on Au(111)
- Authors
- Jeong, Youngdo; Kwon, Seungwook; Kang, Yongku; Lee, Changjin; Ito, Eisuke; Hara, Masahiko; Noh, Jaegeun
- Issue Date
- Oct-2007
- Publisher
- ELSEVIER
- Keywords
- self-assembled monolayers; tolane; temperature effect; scanning tunneling microscopy
- Citation
- ULTRAMICROSCOPY, v.107, no.10-11, pp.1000 - 1003
- Indexed
- SCIE
SCOPUS
- Journal Title
- ULTRAMICROSCOPY
- Volume
- 107
- Number
- 10-11
- Start Page
- 1000
- End Page
- 1003
- URI
- https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/179479
- DOI
- 10.1016/j.ultramic.2007.02.038
- ISSN
- 0304-3991
- Abstract
- Surface structures of tolanethioacetate (TTA) self-assembled monolayers (SAMs) on Au(1 1 1), formed in a 0.5 mM N,N'dimethylformamide (DMF) solution, were investigated as a function of solution temperature by scanning tunneling microscopy (STM). The STM study revealed that thioacetyl-terminated TTA molecules on Au(1 1 1) did not form ordered SAMs at room temperature and 80 degrees C, whereas the adsorption of TTA molecules on Au(1 1 1) at a solution temperature of 50 degrees C led to the formation of two mixed phases: a disordered phase and a unique ordered phase, consisting rod-like dom, ains, which can be described as a (/6 x /13)15 degrees superstructure. From this study, it was demonstrated that solution temperature is a key factor controlling the two-dimensional SAM structure of TTA molecules.
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