Disruption of the Electrical Conductivity of Highly Conductive Poly(3,4-ethylenedioxythiophene):Poly(styrene sulfonate) by Hypochlorite

Poly(3,4-ethyldioxythiophene):poly(styrene sulfonate) (PEDOT:PSS), as a thermoelectric(TE) material, exhibits a high electrical conductivity and ZT value (10−1–100).

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Applicability of poly(3,4-ethylenedioxythiophene): poly(styrene sulfonate) impregnated polyurethane nanoweb as a transmission line for smart textiles

Textile Research Journal ◽

10.1177/0040517520975633 ◽

2020 ◽

pp. 004051752097563

Author(s):

Hyeon-seon Cho ◽

Eunji Jang ◽

Hang Liu ◽

Gilsoo Cho

Keyword(s):

Electrical Conductivity ◽

Thermal Treatment ◽

Transmission Line ◽

Electrical Resistance ◽

Treatment Temperature ◽

Thermal Treatment Temperature ◽

Smart Textiles ◽

Resistance Change ◽

Styrene Sulfonate ◽

Poly Styrene Sulfonate

Smart clothing, which can be manufactured based on smart textiles with electrical conductivity, can be used as a transmission line to transmit signals. The performance of the fabricated textile-based transmission line can be determined by evaluating light-emitting diode consistency. In this study, a textile-based transmission line was fabricated by impregnating two concentrations of poly(3,4-ethylenedioxythiophene): poly(styrene sulfonate) (PEDOT: PSS) to impart the electrical conductivity to a polyurethane (PU) nanoweb. Three conditions of thermal treatment were conducted to decrease the electrical resistance, and the thickness, electrical, surface, and chemical properties were evaluated. The thickness of the specimens tended to decrease at the low concentration, and the thermal treatment temperature increased. The linear resistances decreased from 1580 Ω/cm (PA) to 310.6 Ω/cm (PB120) as the concentration of PEDOT: PSS and thermal treatment temperature increased. Field emission scanning electron microscope images show that the PU nanoweb was uniformly and successfully impregnated with PEDOT: PSS. Raman spectra indicate an effect of the thermal treatment on the structural change of the PEDOT chains, which suggests an electrical resistance change of specimens. As a result, the optimum concentration of the PEDOT: PSS impregnated PU nanoweb as a transmission line for smart textiles is 2.6 wt%, and the thermal treatment temperature is 120℃. The performance of the textile-based transmission line (PB120) according to the length was higher as the length of the specimen was shorter. The highest consistency was 51 lm/m2 (50 mm), and the lowest was 45 lm/m2 (150 mm). Therefore, the PEDOT: PSS/PU nanoweb has applicability and feasibility as a transmission line.

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Environmentally Friendly Synthesis of Poly(3,4-Ethylenedioxythiophene): Poly(Styrene Sulfonate)/SnO2 Nanocomposites

Polymers ◽

10.3390/polym13152445 ◽

2021 ◽

Vol 13 (15) ◽

pp. 2445

Author(s):

Ana M. Díez-Pascual

Keyword(s):

Electrical Conductivity ◽

Flexible Electronics ◽

Sno2 Nanoparticles ◽

Environmentally Friendly ◽

Optical Transparency ◽

High Tech ◽

Practical Applications ◽

Styrene Sulfonate ◽

Uniform Dispersion ◽

Poly Styrene Sulfonate

Conductive poly(3,4-ethylenedioxythiophene):poly(styrene sulfonate) (PEDOT:PSS) is widely used for practical applications such as energy conversion and storage devices owing to its good flexibility, processability, high electrical conductivity, and superior optical transparency, among others. However, its hygroscopic character, short durability, and poor thermoelectric performance compared to inorganic counterparts has greatly limited its high-tech applications. In this work, PEDOT:PSS/SnO2 nanocomposites have been prepared via a simple, low cost, environmentally friendly method without the use of organic solvents or compatibilizing agents. Their morphology, thermal, thermoelectrical, optical, and mechanical properties have been characterized. Electron microscopy analysis revealed a uniform dispersion of the SnO2 nanoparticles, and the Raman spectra revealed the existence of very strong SnO2-PEDOT:PSS interactions. The stiffness and strength of the matrix gradually increased with increasing SnO2 content, up to 120% and 65%, respectively. Moreover, the nanocomposites showed superior thermal stability (as far as 70 °C), improved electrical conductivity (up to 140%), and higher Seebeck coefficient (about 80% increase) than neat PEDOT:PSS. On the other hand, hardly any change in optical transparency was observed. These sustainable nanocomposites show considerably improved performance compared to commercial PEDOT:PSS, and can be highly useful for applications in energy storage, flexible electronics, thermoelectric devices, and related fields.

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Poly(3,4-Ethylenedioxythiophene):Poly(Styrene Sulfonate)/Boron Carbide Hybrid Composites with Improved Thermoelectric Performance

Journal of Electronic Materials ◽

10.1007/s11664-021-09092-3 ◽

2021 ◽

Author(s):

Volkan Ugraskan ◽

Esra Tari ◽

Ozlem Yazici

Keyword(s):

Boron Carbide ◽

Hybrid Composites ◽

Thermoelectric Performance ◽

Styrene Sulfonate ◽

Poly Styrene Sulfonate

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Sigmoidal Dependence of Electrical Conductivity of Thin PEDOT:PSS Films on Concentration of Linear Glycols as a Processing Additive

Materials ◽

10.3390/ma14081975 ◽

2021 ◽

Vol 14 (8) ◽

pp. 1975

Author(s):

Hyeok Jo Jeong ◽

Hong Jang ◽

Taemin Kim ◽

Taeshik Earmme ◽

Felix Sunjoo Kim

Keyword(s):

Electrical Conductivity ◽

Ethylene Glycol ◽

Triethylene Glycol ◽

Optical Transmittance ◽

Monomethyl Ether ◽

Additive Concentration ◽

Transparent Electrodes ◽

Ethylene Glycol Monomethyl Ether ◽

Conductivity Enhancement ◽

Poly Styrene Sulfonate

We investigate the sigmoidal concentration dependence of electrical conductivity of poly(3,4-ethylenedioxythiophene):poly(styrene sulfonate) (PEDOT:PSS) processed with linear glycol-based additives such as ethylene glycol (EG), diethylene glycol (DEG), triethylene glycol (TEG), hexaethylene glycol (HEG), and ethylene glycol monomethyl ether (EGME). We observe that a sharp transition of conductivity occurs at the additive concentration of ~0.6 wt.%. EG, DEG, and TEG are effective in conductivity enhancement, showing the saturation conductivities of 271.8, 325.4, and 326.2 S/cm, respectively. Optical transmittance and photoelectron spectroscopic features are rather invariant when the glycols are used as an additive. Two different figures of merit, calculated from both sheet resistance and optical transmittance to describe the performance of the transparent electrodes, indicate that both DEG and TEG are two most effective additives among the series in fabrication of transparent electrodes based on PEDOT:PSS films with a thickness of ~50–60 nm.

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