Interfacial properties of water/heavy water layer encapsulate in bilayer graphene nanochannel and nanocapacitor

Shayeganfar, Farzaneh; Beheshtian, Javad

doi:10.1007/s10854-019-01547-y

Cited by 1 publication

(2 citation statements)

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“…Although we envisaged that, via this method, water molecules can cover the surface in a thin-film fashion, we were unable to visualize the water layer and thus cannot know its thickness either by STM or atomic force microscopy . Through optical microscopy, some water bubbles were found on the graphite surface, ascribed to the hydrophobic property of the surface . Due to the significant interaction between a water molecule and an HOPG surface, isolated water molecules may exist on the surface as well.…”

Section: Resultsmentioning

confidence: 99%

“…Through optical microscopy, some water bubbles were found on the graphite surface, ascribed to the hydrophobic property of the surface . Due to the significant interaction between a water molecule and an HOPG surface, isolated water molecules may exist on the surface as well. Therefore, an ultrasmall amount of water would be able to affect the resulting outcomes of electric-field-induced phase transitions of TMA.…”

Section: Resultsmentioning

confidence: 99%

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Supramolecular Self-Assembly: Molecular Polymorphs and Their Transitions Triggered Electrically via Water Assistance at the Liquid/Graphite Interface

et al. 2019

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Supramolecular phase transitions triggered by external stimuli constitute a fascinating topic in materials science and supramolecular chemistry. Trimesic acid (TMA) represents a simple molecular building block, and its polymorphs on a solid surface have been extensively explored by scanning probe microscopy and computational simulations. The phase transformations of TMA electrically induced by scanning tunneling microscopy (STM) were previously observed yet noticed to take place rather sporadically. Here, we show by STM that the presence of water at the liquid/solid interface promotes the occurrence of the electrically triggered phase transition of TMA. DFT simulations were performed to investigate the mechanism of the deprotonation reactions occurring at the interface and to reveal the role of solvents. The Gibbs activation energy for the deprotonation of TMA was calculated to be the smallest for the OH– species present in water, which supports the STM observations.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%