Journal of the Korean Vacuum Society (한국진공학회지)

The Korean Vacuum Society (한국진공학회)
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STM Study of Self Assembled Monolayer Formed from Binary Mixtures of Substituted Alkyl Chains

치환된 알킬 사슬 혼합물의 자기조립 단분자막 구조지 STM 연구

  • Son S.B. (Department of Chemistry, Chonbuk National University, Korea Basic Science Institute) ;
  • Lee H. (Korea Basic Science Institute) ;
  • Jeon I.C. (Department of Chemistry, Chonbuk National University) ;
  • Hahn J.R. (Department of Chemistry, Chonbuk National University)
  • 손승배 (전북대학교 화학과, 한국기초과학지원연구원) ;
  • 이해성 (한국기초과학지원연구원) ;
  • 전일철 (전북대학교 화학과) ;
  • 한재량 (전북대학교 화학과)
  • Published : 2006.03.01
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Abstract

The molecular assembly of p-iodo-phenyl octadecyl ether (I-POE), p-iodo-phenyl docosyl ether (I-PDE) and a binary mixture of these two molecules on graphite has been studied using a scanning tunneling microscope. Each molecular system self-assembles on the graphite surface to form a stable monolayer with a head-to-tail configuration. For the binary system, the I-POE and I-PDE molecules do not mix on the surface, preferring instead to form isolated monolayer domains. Here, the I-POE molecules are preferentially adsorbed on the graphite surface, due to the effects of alkyl chain length and the functional group on the monolayer structure.

p-iodo-phenyl octadecyl ether (I-POE)와 p-iodo-phenyl docosyl ether (I-PDE)의 분자의 흑연표면에서의 자기조립과 이 두 분자로 이루어진 혼합물의 자기조립을 주사 터널링 현미경을 이용하여 연구하였다. 각 분자 시스템은 흑연 표면에서 head-to-tail 배향의 안정된 단분자막으로 자기조립한다. 혼합물 시스템에서는 I-POE와 I-PDE 분자들은 표면에서 섞이지 않고, 고립된 단분자막 도메인을 형성한다. 특히 I-POE 분자는 흑연 표면에서 단분자막 구조를 우선적으로 형성하는데 이는 알킬 사슬 길이와 작용기를 가진 헤드 그룹의 효과에 기인한다.

Keywords

References

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