Ester formation at the liquid–solid interface

Nguyen T. N. Ha; Thiruvancheril G. Gopakumar; Nguyen D. C. Yen; Carola Mende; Lars Smykalla; Maik Schlesinger; Roy Buschbeck; Tobias Rüffer; Heinrich Lang; Michael Mehring; Michael Hietschold

doi:10.3762/bjnano.8.213

Beilstein Journal of Nanotechnology (Oct 2017)

Ester formation at the liquid–solid interface

Nguyen T. N. Ha,
Thiruvancheril G. Gopakumar,
Nguyen D. C. Yen,
Carola Mende,
Lars Smykalla,
Maik Schlesinger,
Roy Buschbeck,
Tobias Rüffer,
Heinrich Lang,
Michael Mehring,
Michael Hietschold

Affiliations

Nguyen T. N. Ha: Solid Surfaces Analysis Group, Institute of Physics, Technische Universität Chemnitz, D-09107 Chemnitz, Germany
Thiruvancheril G. Gopakumar: Department of Chemistry, Indian Institute of Technology Kanpur, Kanpur 208016, India
Nguyen D. C. Yen: Solid Surfaces Analysis Group, Institute of Physics, Technische Universität Chemnitz, D-09107 Chemnitz, Germany
Carola Mende: Inorganic Chemistry, Institute of Chemistry, Technische Universität Chemnitz, D-09107 Chemnitz, Germany,
Lars Smykalla: Solid Surfaces Analysis Group, Institute of Physics, Technische Universität Chemnitz, D-09107 Chemnitz, Germany
Maik Schlesinger: Coordination Chemistry, Institute of Chemistry, Technische Universität Chemnitz, D-09107 Chemnitz, Germany
Roy Buschbeck: Inorganic Chemistry, Institute of Chemistry, Technische Universität Chemnitz, D-09107 Chemnitz, Germany,
Tobias Rüffer: Inorganic Chemistry, Institute of Chemistry, Technische Universität Chemnitz, D-09107 Chemnitz, Germany,
Heinrich Lang: Inorganic Chemistry, Institute of Chemistry, Technische Universität Chemnitz, D-09107 Chemnitz, Germany,
Michael Mehring: Coordination Chemistry, Institute of Chemistry, Technische Universität Chemnitz, D-09107 Chemnitz, Germany
Michael Hietschold: Solid Surfaces Analysis Group, Institute of Physics, Technische Universität Chemnitz, D-09107 Chemnitz, Germany

DOI: https://doi.org/10.3762/bjnano.8.213
Journal volume & issue: Vol. 8, no. 1
pp. 2139 – 2150

Abstract

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A chemical reaction (esterification) within a molecular monolayer at the liquid–solid interface without any catalyst was studied using ambient scanning tunneling microscopy. The monolayer consisted of a regular array of two species, an organic acid (trimesic acid) and an alcohol (undecan-1-ol or decan-1-ol), coadsorbed out of a solution of the acid within the alcohol at the interface of highly oriented pyrolytic graphite (HOPG) (0001) substrate. The monoester was observed promptly after reaching a threshold either related to the increased packing density of the adsorbate layer (which can be controlled by the concentration of the trimesic acid within the alcoholic solution via sonication or extended stirring) or by reaching a threshold with regards to the deposition temperature. Evidence that esterification takes place directly at the liquid–solid interface was strongly supported.

Published in Beilstein Journal of Nanotechnology

ISSN: 2190-4286 (Online)
Publisher: Beilstein-Institut
Country of publisher: Germany
LCC subjects: Technology: Chemical technology; Science: Physics
Website: http://www.beilstein-journals.org/bjnano/home/home.htm

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