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在上形成和构建自组装的乙酸盐单层的形成和结构

J Christopher Love1, Daniel B Wolfe, Richard Haasch

  • 1Department of Chemistry and the Fredrick Seitz Materials Research Laboratory at the University of Illinois-Urbana/Champaign, Urbana, IL 61801, USA.

Journal of the American Chemical Society
|February 27, 2003
PubMed
概括

在上自组装的n-alkanethiols单层形成有组织的结构. 这些薄膜表现出硫化物间相和有序的乙烯酸盐链,在空气中稳定,但随着时间的推移表面硫氧化.

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Structure and Nomenclature of Thiols and Sulfides02:17

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Thiols and sulfides are sulfur analogs of alcohols and ethers, respectively, where the sulfur atom takes the place of the oxygen atom. Thus, thiols are generally represented as RSH, where R is an alkyl substituent and —SH is the functional group. On the other hand, in sulfides, the central sulfur atom is bonded to two hydrocarbon groups on either side. Depending upon the type of group, sulfides can be either symmetrical or asymmetrical. Both thiols and sulfides display a bent geometry, similar...
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Thiols are prepared using the hydrosulfide anion as a nucleophile in a nucleophilic substitution reaction with alkyl halides. For instance, bromobutane reacts with sodium hydrosulfide to give butanethiol.
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Sulfides are the sulfur analog of ethers, just as thiols are the sulfur analog of alcohol. Like ethers, sulfides also consist of two hydrocarbon groups bonded to the central sulfur atom. Depending upon the type of groups present, sulfides can be symmetrical or asymmetrical. Symmetrical sulfides can be prepared via an SN2 reaction between 2 equivalents of an alkyl halide and one equivalent of sodium sulfide.