한국진공학회:학술대회논문집 (Proceedings of the Korean Vacuum Society Conference)
- 한국진공학회 2012년도 제42회 동계 정기 학술대회 초록집
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- Pages.243-243
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- 2012
Control the Au(111) Work Function by Substituted Aromatic Thiol Self-Assembled Monolayers
- Gang, Hun-Gu ;
- Ito, Eisuke (RIKEN) ;
- Okabayashi, Youichi (RIKEN) ;
- Hara, Masahiko (RIKEN) ;
- No, Jae-Geun
- 발행 : 2012.02.08
초록
Self-assembled monolayers (SAMs) prepared by aromatic thiols on gold surfaces have much larger potential for electronic device applications due to their electronic properties. In this study, the formation and structures of SAMs prepared by benzenethiol (BT), toluenethiol (TT), 2-fluorobenzenethiol (2-FBT), 3-fluorobenzenethiol (3-FBT), 4-fluorobenzenethiol (4-FBT), 4-chlorobenzenethiol (4-CBT), 4-fluorobenzenemethanethiol (4-FBMT), and 4-chlorobenzenemethanethiol (4-CBMT) on Au(111) were examined using scanning tunneling microscopy (STM) and Kelvin probe (KP) to explore the structure and electronic interface properties of eight differently substituted aromatic thiol SAMs on Au(111). And these values are compared with gas phase dipole moments computed by quantum chemical calculations for individual thiol molecules. It was revealed that all eight thiol-molecules form uniform SAMs on Au(111) at