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|
| Type |
Poster Presentation |
| Area |
Physical Chemistry |
| Room No. |
Event Hall |
| Time |
4월 20일 (금요일) 11:00~12:30 |
| Code |
PHYS.P-104 |
| Subject |
Formation and Structure of Aromatic Selenocyanate Self-Assembled Monolayers on Au(111) |
| Authors |
Seul-ki Han, Jaegeun Noh*
Department of Chemistry, Hanyang University, Korea
|
| Abstract |
Self-assembled monolayers (SAMs) of aromatic thiol on gold surface have been considerably studied in molecular electronics, charge transfer, nanolithograpy, molecular switching and electronic interface. Recently, studies on other alternative headgroups have been gained attention due to oxidation problem of thiol system which formed dimers or other oxidized compounds during SAM formation. In this study, we investigated the SAMs of aromatic selenocyanates [phenylselenocyanate (PhSeCN) and benzylselenocyanate (BzSeCN)] on Au(111) using scanning tunneling microscopy (STM) and X-ray photoelectron spectroscopy (XPS). STM measurements revealed that deposition method, time and temperature affect the formation and structure of PhSeCN and BzSeCN SAMs on Au(111). PhSeCN SAMs from vapor deposition had various adatom islands or patches, unlike case of solution deposition method. Also, we examined the effect of methylene linker between aromatic ring and SeCN headgroup on the formation of SAMs. BzSeCN SAMs formed by solution deposition had larger ordered domains than PhSeCN SAMs. XPS result indicates that these selenolate SAMs were formed via cleavage of Se-CN bond from RSe-CN. |
| E-mail |
fhsk0105f@hanmail.net |
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121st General Meeting of the KCS