Mesostructured Electroactive Thin Films Through Layer‐by‐Layer Assembly of Redox Surfactants and Polyelectrolytes

PICCININI, ESTEBAN; CEOLÍN, MARCELO; BATTAGLINI, FERNANDO; AZZARONI, OMAR

ChemPlusChem

Wiley

Año: 2020

2192-6506

Electroactive thin films are an important element in the devicesdevoted to energy conversion, actuators, and molecular electronics,among others. Their build-up by the layer-by-layertechnique is an attractive choice since a fine control over thethickness and composition can be achieved. However, most ofthe assemblies described in the literature show a lack of internalorder, and their thicknesses change upon oxidation-statealterations. In this work, we describe the formation of layer-bylayerassemblies of redox surfactants and polyelectrolytes thatleads to the construction of mesoscale organized electroactivefilms. In contrast to thin films prepared with traditional redoxpolymers, here, the redox surfactant does not only allow thecontrol of the film meso-organization (from 2D hexagonal tocircular hexagonal phases) but it also allows the control of thenumber and position of the redox centers. Finally, these filmsshow high stability and a negligible structural deformationunder redox-state changes.