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The impact of lateral confinement on the 2D self-assembly of a normal alkane is investigated via scanning tunneling microscopy-based nanoshaving on covalently modified graphite surfaces. Physical constraints placed on the… Click to show full abstract
The impact of lateral confinement on the 2D self-assembly of a normal alkane is investigated via scanning tunneling microscopy-based nanoshaving on covalently modified graphite surfaces. Physical constraints placed on the confined assemblies lead to geometric frustration, which is shown to be released via a suppression of the lamellar order. This result is explained on the basis of competing enthalpic contributions from molecule–molecule and molecule–substrate interactions and is corroborated by a simple coarse-grain model. Furthermore, a pronounced molecular alignment effect results from the in situ nanoshaving procedure.
Journal Title: Chemistry of Materials
Year Published: 2019
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