Integrated carboxylic carbon nanotubes pathway with membranes for voltage-activated humidity detection and microclimate regulation

This work describes some single walled carboxylic carbon nanotubes outstanding transport properties when assembled in a 3D microarray working like humidity membrane-sensor and adjustable moisture regulator. Combined nano-assembly approaches are used to build up a better quality pathway through which assisted-charge and mass transport synchronically takes place. Structure-electrical response relationships are found, while controllable and tunable donor/acceptor interactions established at the materials interfaces are regarded as key factors for the accomplishment of charge transportation, enhanced electrical response and adjustable moisture exchange. Raman and infrared spectroscopy provide indication about the fine structural and chemical features of the hybrid-composite membranes, resulting in perfect agreement with related morphology and electrical properties. Enhanced and modular electrical response to changes in the surrounding atmosphere is concerned with doping events, while assisted moisture regulation is discussed in relation to swelling and hopping actions. The electro-activated hybrid-composite membrane proposed in this work can be regarded as an attractive ‘sense-to-act’ precursor for smart long-distance monitoring systems with capability to adapt itself and provide local comfortable microenvironments.