Exploring the conduction mechanism of PEDOT:PSS free-standing thin films doped with SWCNTs: THz and infrared-ultraviolet spectroscopy study

Recyclable Bimodal Polyvinyl Alcohol/PEDOT:PSS Hydrogel Sensors for Highly Sensitive Strain and Temperature Sensing

“…The effect of EG content on the conductivity of PVA/CA/EG/PEDOT:PSS was investigated (Figure f), and it was found that the conductivity of the hydrogel increases with the increase of EG. It indicates that EG doping of PEDOT:PSS causes the PEDOT chain to change from a benzene-like conformation to a quinone-like conformation, which in turn facilitates intra- and interchain charge transfer and leads to an increase in conductivity . Water molecules in hydrogels lose their elasticity due to the formation of ice crystals at temperatures below 0 °C.…”

“…It indicates that EG doping of PEDOT:PSS causes the PEDOT chain to change from a benzene-like conformation to a quinone-like conformation, which in turn facilitates intra-and interchain charge transfer and leads to an increase in conductivity. 30 Water molecules in hydrogels lose their elasticity due to the formation of ice crystals at temperatures below 0 °C. EG can significantly lower the freezing point of water, thus conferring antifreeze properties to hydrogels.…”

A selectively bimodal flexible sensor based on IL/SWCNTs/PEDOT:PSS nanocomposites for materials and shape recognition

“…22 Thus, it can be inferred that the preparation of SWCNT/PEDOT:PSS nanocomposites is a feasible strategy, which is based on the effective interfacial p-p conjugated interaction between the conductive polymer and active carbon, to synergistically improve the conductivity and Seebeck coefficient. [25][26][27] Yet, there is still a key issue of terrible dispersion of SWCNTs in the polymer matrix. Fortunately, the further incorporation of an ionic liquid (IL) is expected to solve all the above defects, which can lead to phase separation of PEDOF:PSS due to the ion exchange effect while promoting the SWCNT dispersion owing to the specific interaction between the p-electronic surface of carbon and the imidazolium ion of the IL, finally enhancing the thermoelectric properties of the as-prepared nanocomposite.…”

Pressure and Temperature Dual-Parameter Sensor Based on Natural Wood for Portable Health-Monitoring Devices

“…Due to their compatibility and mechanical flexibility, organic thermoelectric materials have been widely used for fabricating flexible and bifunctional sensors . With excellent thermoelectric properties and highly tunable conductivity, poly­(3,4-ethylenedioxythiophene)-poly­(styrenesulfonate) (PEDOT:PSS) has been regarded as one of the most promising candidates for fabricating flexible composites. − In recent years, combining organic and inorganic materials has been proven to be an effective way to further improve polymers’ conductivity and thermoelectric properties. Due to high conductivity and material compatibility, single-walled carbon nanotubes (SWCNTs) show great potential as inorganic fillers.…”