Engineered doped and codoped polyaniline gas sensors synthesized in N,N,dimethylformamide media

Arenas, M. C.; Sánchez, Gabriela; Nicho, M.E.; Elizalde-Torres, J.; Castaño, V. M.

doi:10.1007/s00339-011-6704-6

Cited by 30 publications

(24 citation statements)

References 23 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The Q/B ratios of treated and untreated films (Fig. 5) are close to unity which implies that the films are all in emeraldine oxidation state [26]. However, the Q/B ratios for treated films are higher which could ac-…”

Section: Ftir Spectroscopymentioning

confidence: 94%

Effect of supercritical carbon dioxide treatment on the polarons of HCl‐doped polyaniline films

Fernando

Vequizo

Odarve

et al. 2015

Phys. Status Solidi C

View full text Add to dashboard Cite

In situ HCl‐doped polyaniline films were synthesized on glass substrates via chemical oxidative polymerization of aniline using ammonium peroxydisulfate as oxidant. The films were treated with supercritical carbon dioxide (SC‐CO2) at 30 MPa and 40 °C for 30 minutes. The physico‐chemical and electrical properties of the films were determined to establish the effect of supercritical carbon dioxide treatment on the polaron structures of polyaniline films. The treatment removed limited number of polarons which affected the properties of polyaniline. The treated films remained conducting despite that the conductance decreased substantially. The treatment enhanced the quinoid character of the films and altered the HOMO‐LUMO transitions. In addition, SC‐CO2 treatment was unable to remove the PANI precipitations adhering on the surface of the films. A mechanism on the effect of SC‐CO2 interaction to HCl‐doped PANI films was proposed. (© 2015 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)

show abstract

Section: Ftir Spectroscopymentioning

confidence: 94%

Effect of supercritical carbon dioxide treatment on the polarons of HCl‐doped polyaniline films

Fernando

Vequizo

Odarve

et al. 2015

Phys. Status Solidi C

View full text Add to dashboard Cite

show abstract

“…It was also shown that TFA directly protonates the imine groups (C¼N) of PANI whereas other dopants protonate amine groups which do not provide new charge carriers. 20,21 As demonstrated in Fig. 2, when the DBSNa/ED4SS surfactant couple was not used, TFA-doped PANI films showed lower electrical conductivity (see also Fig.…”

mentioning

confidence: 91%

“…At À15 C, formation of TFA vapors is highly suppressed and due to its small molecular size TFA can penetrate into the polymer layers and dope the polymer effectively. 20 After wetting with TFA, the films were sealed in plastic zip bags and placed in a freezer for 6 h. Afterwards, the films were removed from the plastic bags and placed under a chemical hood at room temperature overnight to allow full evaporation of TFA. The conductivity of the TFA-doped films decreased as the conditioning temperature of the films was increased towards room temperature and above (60 C).…”

mentioning

confidence: 99%

“…PANI assumes an expanded chain conformation (linear) in the presence of TFA with high degree of conjugation. 20 This results into a better carrier charge transport which can enhance electrical conductivity. It was also shown that TFA directly protonates the imine groups (C¼N) of PANI whereas other dopants protonate amine groups which do not provide new charge carriers.…”

mentioning

confidence: 99%

“…Recent works indicate that the degree of protonation of PANI and the acidity of the doping agents influence the final film morphology in PANI thin films obtained by solution casting. 20 PANI can exist in several different oxidation states, including the fully reduced leucoemeraldine form, the half oxidized emeraldine form, and the fully oxidized pernigraniline form. 21 Conductivity of PANI is controlled by two separate mechanisms of charge transfer, namely, carrier transfer across the polymer backbone and carrier hopping between polymer chains.…”

mentioning

confidence: 99%

See 2 more Smart Citations

Metal-like conductivity exhibited by triboelectrically deposited polyaniline (emeraldine base) particles on microtextured SiC surfaces

Bayer

Caramia

Biswas

et al. 2012

Applied Physics Letters

View full text Add to dashboard Cite

show abstract

Ink Processing for Thermoelectric Materials and Power‐Generating Devices

Choo

Kim

et al. 2018

Advanced Materials

View full text Add to dashboard Cite

The growing concern over the depletion of hydrocarbon resources, and the adverse environmental effects associated with their use, has increased the demand for renewable energy sources. Thermoelectric (TE) power generation from waste heat has emerged as a renewable energy source that does not generate any pollutants. Recently, ink‐based processing for the preparation of TE materials has attracted tremendous attention because of the simplicity in design of power generators and the possibility of cost‐effective manufacturing. In this progress report, recent advances in the development of TE inks, processing techniques, and ink‐fabricated devices are reviewed. A summary of typical formulations of TE materials as inks is included, as well as a discussion on various ink‐based fabrication methods, with several examples of newly designed devices fabricated using these techniques. Finally, the prospects of this field with respect to the industrialization of TE power generation technology are presented.

show abstract

Engineered doped and codoped polyaniline gas sensors synthesized in N,N,dimethylformamide media

Cited by 30 publications

References 23 publications

Effect of supercritical carbon dioxide treatment on the polarons of HCl‐doped polyaniline films

Effect of supercritical carbon dioxide treatment on the polarons of HCl‐doped polyaniline films

Metal-like conductivity exhibited by triboelectrically deposited polyaniline (emeraldine base) particles on microtextured SiC surfaces

Ink Processing for Thermoelectric Materials and Power‐Generating Devices

Contact Info

Product

Resources

About