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제112회 대한화학회 학술발표회, 총회 및 기기전시회 안내 Formation of Highly Ordered Self-Assembled Monoalayers of 4-Fluorobenzenethiols Guided by Displacement of Cyclohexanethiols on Au(111) [우수포스터상]

등록일
2013년 9월 4일 11시 09분 07초
접수번호
1312
발표코드
PHYS.P-413 이곳을 클릭하시면 발표코드에 대한 설명을 보실 수 있습니다.
발표시간
10월 16일 (수요일) 16:00~19:00
발표형식
포스터
발표분야
물리화학
저자 및
공동저자
성태현, 강훈구1, 이동진1, 노재근1,*
한양대학교 나노융합과학과, Korea
1한양대학교 화학과, Korea
Self-assembled monolayers (SAMs) of fluorinated-aromatic thiols have drawn much attention due to their interesting electrical and optical properties that may be applicable in molecular electronics. However, to improve device performance and obtain reliable data, the ability to fabricate two-dimensional ordered SAMs of fluorinated-aromatic thiols is needed. Especially, it is known that the SAMs of 4-fluorobenzenethiol (4-FBT) have usually disordered phases. In this study, to obtain long-range ordered 4-FBT SAMs, cyclohexanethiol (CHT) SAMs can be used as transient layers because of their weaker lateral interaction and lower adsorption density compared to alkanethiolate SAMs. By scanning tunneling microscopy observation, we found that well-ordered 4-FBT SAMs can be obtained via the displacement of preadsorbed CHT SAMs on Au(111) by 4-FBT. It was found that the partially ordered 4-FBT SAMs were formed after 1 h displacement, whereas the fully covered 4-FBT SAMs were formed after 2 h displacement.

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