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Citation: QIAN Li-Ping, DENG Wen-Li. Adsorption Characteristics of Self-assembled 1-Octadecanol Layer on HOPG[J]. Acta Physico-Chimica Sinica, ;2008, 24(03): 443-447. doi: 10.3866/PKU.WHXB20080316 shu

Adsorption Characteristics of Self-assembled 1-Octadecanol Layer on HOPG

1.
College of Materials Science and Engineering, South China University of Technology, Guangzhou 510640, P. R. China

Received Date: 9 October 2007
Available Online: 25 January 2008

Long-chain alkanol, 1-C18H37OH, adsorbed from solution onto highly oriented pyrolytic graphite (HOPG) and formed ordered, oriented monolayer films at room temperature in air. The formation and structure of 1-octadecanol self-assembledmonolayers (SAMs) on HOPGwere examined using scanning tunneling microscopy (STM), contact angle measurement, and X-ray photoelectron spectroscopy (XPS). Our experimental results indicated that 1-octadecanol SAMs grew in domains, with molecules arranged either horizontally or vertically on the substrate. Moreover, the permutation means of the molecule showed relevance to the surface coverage of 1-octadecanol SAMs on the HOPG.
- HOPG; SAMs; STM; Contact angle; XPS
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