The new publication “Manipulating Ion Transport Regimes in Nanomembranes via a “Pore-in-Pore” Approach Enabled by the Synergy of Metal–Organic Frameworks and Solid-State Nanochannels” by Dr. Juan Allegretto, in collaboration with the Soft Matter Laboratory in Argentina, is now available in ACS Nano.
This manuscript explores the modification of Solid-State Nanochannels (SSN) with Metal-Organic Frameworks (MOFs). The confined growth of Zr-based MOF alters the ion transport regime of the system, switching from diode-like to ion-current saturation regimes based on the synthetic approach. Additionally, by considering the dependence of the charge state of the UiO-66 MOF on the protonation degree, pH changes offered a mechanism to tune the iontronic output (and selectivity) among different regimes, including anion-driven rectification, cation-driven rectification, ion current saturation, and ohmic behavior. The creation of nanofluidic membranes with different modulable transport regimes has attracted special interest in the design of integrated ionic circuits for electric signal processing, ion manipulation and logical devices, as well as in other applications related to sensing, filtration, and energy conversion
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