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Phase Separation within a Binary Self-Assembled Monolayer on Au{111} Driven by an Amide-Containing Alkanethiol

Smith, Rachel K. and Reed, Scott M. and Lewis, Penelope A. and Monnell, Jason D. and Clegg, Robert S. and Kelly, Kevin F. and Bumm, Lloyd A. and Hutchison, James E. and Weiss, Paul S. (2001) Phase Separation within a Binary Self-Assembled Monolayer on Au{111} Driven by an Amide-Containing Alkanethiol. Journal of Physical Chemistry B, 105 (6). pp. 1119-1122. ISSN 1520-6106. https://resolver.caltech.edu/CaltechAUTHORS:20170516-084059247

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Abstract

We report the phase separation of a self-assembled monolayer formed from a binary mixture of adsorbates, n-decanethiol, and an amide-containing alkanethiol of similar length (3-mercapto-N-nonylpropionamide), as studied by scanning tunneling microscopy. While mixtures of n-alkanethiols of similar length (i.e., n-decanethiol and n-dodecanethiol) show no phase separation, the introduction of a hydrogen-bonding functionality buried deep within the film induces the formation of single-component domains on the nanometer scale. Phase separation occurs at all relative compositions studied, and for these molecules maintains the same exposed terminal functionality across the entire film. In nonequimolar concentrations of adsorbates, we observe that the solution component present in greater concentration will dominate the composition of the adsorbed monolayer in super proportion to that in solution, consistent with enthalpic contributions from both the solvent and intermolecular interactions of adsorbates.


Item Type:Article
Related URLs:
URLURL TypeDescription
http://dx.doi.org/10.1021/jp0035129DOIArticle
http://pubs.acs.org/doi/abs/10.1021/jp0035129PublisherArticle
Additional Information:© 2001 American Chemical Society. Received: September 28, 2000; In Final Form: December 8, 2000. Publication Date (Web): February 8, 2001. The authors thank NSF (all), ONR (PSU), DARPA (PSU), the Camille and Henry Dreyfus Foundation (J.E.H. is a Camille Dreyfus Teacher Scholar), the Alfred P. Sloan Foundation (J.E.H. is a Sloan Fellow), and a Department of Education GAANN fellowship (S.M.R.).
Funders:
Funding AgencyGrant Number
NSFUNSPECIFIED
Office of Naval Research (ONR)UNSPECIFIED
Defense Advanced Research Projects Agency (DARPA)UNSPECIFIED
Camille and Henry Dreyfus FoundationUNSPECIFIED
Alfred P. Sloan FoundationUNSPECIFIED
Department of EducationUNSPECIFIED
Issue or Number:6
Record Number:CaltechAUTHORS:20170516-084059247
Persistent URL:https://resolver.caltech.edu/CaltechAUTHORS:20170516-084059247
Official Citation:Phase Separation within a Binary Self-Assembled Monolayer on Au{111} Driven by an Amide-Containing Alkanethiol Rachel K. Smith, Scott M. Reed, Penelope A. Lewis, Jason D. Monnell, Robert S. Clegg, Kevin F. Kelly, Lloyd A. Bumm, James E. Hutchison, and Paul S. Weiss The Journal of Physical Chemistry B 2001 105 (6), 1119-1122 DOI: 10.1021/jp0035129
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:77486
Collection:CaltechAUTHORS
Deposited By: Tony Diaz
Deposited On:16 May 2017 15:58
Last Modified:03 Oct 2019 17:58

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