期刊
LANGMUIR
卷 26, 期 23, 页码 18155-18161出版社
AMER CHEMICAL SOC
DOI: 10.1021/la103494g
关键词
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资金
- National Science Foundation, Division of Chemistry [CHE-0616457]
- NSF [DGE-0903661]
- Division Of Chemistry
- Direct For Mathematical & Physical Scien [0910549] Funding Source: National Science Foundation
Self-assembled monolayers of a series of isophthalic acids (5-octadecyloxyisophthalic acid, 5-decyloxyisophthalic acid, 5-hexyloxyisophthalic acid, and 5-pentyloxyisophthalic acid) formed on highly ordered pyrolytic graphite (HOPG) at the solid liquid interface were studied using scanning tunneling microscopy (STM). Although these molecules have the same dicarboxyl headgroup, their hydrocarbon tails are of different lengths. Hydrogen-bonding between headgroups and van der Waals interactions between the hydrocarbon tails control the final morphology of the monolayer. The STM images show that both van der Waals interactions (vdWs) and hydrogen-bonding (H-B) compete to control the structure, but the final structure of the monolayer is determined by balance between the two interactions.
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