Issue 7, 2020

The nanoscopic principles of capacitive ion sensing interfaces

Abstract

Herein we discuss the operational principles of molecular interfaces that specifically recruit ions from an electrolyte solution and report this in a reagentless capacitive manner. At low ionic occupancy the response of the interface obeys a Debye-type phenomenon akin to classic “image charge” effects. At higher levels of occupancy, the response follows Thomas–Fermi screening and, significantly, is dependent on the electronic structure of the mesoscopic ion–receptor host–guest ensemble.

Graphical abstract: The nanoscopic principles of capacitive ion sensing interfaces

Supplementary files

Article information

Article type
Communication
Submitted
11 oct. 2019
Accepted
20 janv. 2020
First published
20 janv. 2020

Phys. Chem. Chem. Phys., 2020,22, 3770-3774

The nanoscopic principles of capacitive ion sensing interfaces

P. R. Bueno, R. Hein, A. Santos and J. J. Davis, Phys. Chem. Chem. Phys., 2020, 22, 3770 DOI: 10.1039/C9CP05543F

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