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제112회 대한화학회 학술발표회, 총회 및 기기전시회 안내 Formation and Structure of 3-Hexylthiophene Self-Assembled Monolayers on Au(111)

등록일
2013년 9월 4일 11시 09분 22초
접수번호
1313
발표코드
PHYS.P-414 이곳을 클릭하시면 발표코드에 대한 설명을 보실 수 있습니다.
발표시간
10월 16일 (수요일) 16:00~19:00
발표형식
포스터
발표분야
물리화학
저자 및
공동저자
김영우, 강훈구, 이동진, 노재근*
한양대학교 화학과, Korea
The formation of self-assembled monolayers (SAMs) of 3-hexylthiophene (3-HTP) on Au(111) prepared by vapor or solution deposition method was investigated by the cyclic voltammetry (CV), scanning tunneling microscopy (STM) and X-ray photoelectron spectroscopy (XPS). STM and XPS studies revealed that the surface properties of 3-HTP SAMs prepared by vapor deposition method were markedly different from those prepared by solution deposition method. Even though both of 3-HTP SAMs prepared by vapor and solution method give rise to the formation of two-dimensional SAMs through chemisorption, 3-HTP SAMs prepared by vapor deposition contained ordered structure unlike those prepared by solution deposition. Reductive desorption data shows that reductive desorption potential for 3-HTP SAMs is higher than that for thiophene SAMs, which means that the intermolecular interaction of 3-HTP SAMs is stronger than that of thiophene due to the presence of long alkyl chains of 3-HTP molecules. We found that 2-D surface properties of thiophene derivative SAMs are strongly influenced by preparation method (vapor or solution) and intermolecular interaction.

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