Percorrer por autor "Jorge, Sara M."
A mostrar 1 - 1 de 1
Resultados por página
Opções de ordenação
- Free-standing, water-resistant, and conductivity-enhanced PEDOT:PSS films from in situ polymerization of 3-hydroxymethyl-3-methyl-oxetanePublication . Jorge, Sara M.; Santos, Luís F.; Ferreira, Maria João; Marto-Costa, Carolina; Serro, Ana Paula; Galvão, Adelino M.; Morgado, Jorge; Charas, AnaFree-standing films based on conducting polymers, such as poly(3,4-ethylenedioxythiophene): poly(styrene sulfonate) (PEDOT:PSS), offer many benefits over traditional metal electrodes for applications in flexible electronics. However, to ensure structural integrity when contacting aqueous environments and high levels of electrical conductivity, solution-processed polymers require additives that act as crosslinking agents and conductivity enhancers. In this work, a new approach is presented to fabricate water-resistant free-standing films of PEDOT:PSS and simultaneously increase their conductivity, using an oxetane compound as an additive. It is shown that at moderate temperatures, oxetane polymerizes within the PEDOT:PSS acidic medium, forming hydroxymethyl-substituted polyether compounds that form a network upon crosslinking with PSS. The polymer composite films show self-sustainability, structural stability in aqueous environments, and enhanced conductivity. Finally, the potential of the free-standing films as health-monitoring electrodes, specifically for human electrocardiography, is explored.