Artículos de revistas
The nanoscopic principles of capacitive ion sensing interfaces
Fecha
2020-02-21Registro en:
Physical Chemistry Chemical Physics, v. 22, n. 7, p. 3770-3774, 2020.
1463-9076
10.1039/c9cp05543f
2-s2.0-85080846659
Autor
Universidade Estadual Paulista (Unesp)
University of Oxford
Institución
Resumen
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.