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Issue 83, 2018
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Edge-on adsorption of multi-chain functional alkanes stabilizes noncovalent monolayers on MoS2

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Abstract

Modified long-chain alkanes are often used to functionalize graphene and MoS2 noncovalently, with the goal of controlling the substrate electronic structure or interactions with the environment. Alkyl chain adsorption enthalpy is lower on MoS2 than on graphite; the decreased molecule–substrate interaction strength suggests utility for monolayer structures that increase stability through other means. Previously, we have found that diyne phospholipid monolayers on HOPG are more stable toward solution processing than monolayers of single-chain amphiphiles. Here, we show that this is also true for assembly on MoS2, but that the additional stability appears to arise from edge-on adsorption, producing monolayers in which alkyl chains form two stacked layers on the substrate.

Graphical abstract: Edge-on adsorption of multi-chain functional alkanes stabilizes noncovalent monolayers on MoS2

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Supplementary files

Article information


Submitted
08 Aug 2018
Accepted
22 Sep 2018
First published
03 Oct 2018

Chem. Commun., 2018,54, 11709-11712
Article type
Communication
Author version available

Edge-on adsorption of multi-chain functional alkanes stabilizes noncovalent monolayers on MoS2

T. C. Davis, S. R. Russell and S. A. Claridge, Chem. Commun., 2018, 54, 11709
DOI: 10.1039/C8CC06466K

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