Insights into the Role of Counterions on Polyelectrolyte-Modified Nanopore Accessibility

SILIES, LAURA; ESTEFANIA GONZALEZ SOLVEYRA; SZLEIFER, IGAL; ANDRIEU-BRUNSEN, ANNETTE

LANGMUIR

AMER CHEMICAL SOC

Lugar: Washington; Año: 2018 vol. 34 p. 5943 - 5953

0743-7463

Nanopores play a decisive role in different technologies from oil production, separation, and sensing to drug delivery or catalysis and energy conversion. In recent years, abilities to functionalize nanopores have advanced significantly. Thereby, nanopores functionalized with polyelectrolytes or responsive polymers show fascinating transport properties, such as gated or gradually controlled ionic permselectivity. Nonetheless, under-standing the influence of external parameters such as ion type or concentration on nanopore performance, and thus on the mentioned applications, remains a challenge but is crucial for applications. In this work, the effect of different counterions on the wetting and ionic transport in poly(2-(methacryloyloxy)-ethyltrimethylammonium chloride)-functionalized silica mesopores (pore diameter