Gelatin-HCl biomembranes with ionic-conducting properties

Pawlicka, Agnieszka; Vieira, Diogo F.; Sabadini, R. C.

doi:10.1007/s11581-013-0935-9

Cited by 12 publications

(7 citation statements)

References 33 publications

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“…Figure 2 shows the results of the ionic conductivity as a function of temperature of the membranes of DNA, DNA with PEDOT and modified DNA with either CTMA or DODA. As one can observe, similarly to other ionically conducting samples [31] an increase of conductivity with temperature is observed for all membranes. From this figure, it is also seen that three samples, i.e., DNA, DNA-DODA and DNA-PEDOT:PSS have almost the same ionic conductivity values at room temperature, of about 2×10 -5 S/cm.…”

Section: Resultssupporting

confidence: 82%

Bio-inspired materials for electrochemical devices

Pawlicka¹,

Firmino²,

Sentanin³

et al. 2015

SPIE Proceedings

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Natural macromolecules are very promising row materials to be used in modern technology including security and defense. They are abundant in nature, easy to extract and possess biocompatibility and biodegradability properties. These materials can be modified throughout chemical or physical processes, and can be doped with lithium and rare earth salts, ionic liquids, organic and inorganic acids. In this communication samples of DNA and modified DNA were doped with Prussian Blue (PB), poly(ethylene dioxythiophene) (PEDOT), europium and erbium triflate and organic dyes such as Nile Blue (NB), Disperse Red 1 (DR1) and Disperse Orange 3 (DO3). The colored or colorless membranes were characterized by electrochemical and spectroscopic measurements, and they were applied in electrochromic devices (ECDs) and dye sensitized solar cells (DSSC). ECDs change the color under applied potential, so they can modulate the intensity of transmitted light of 15 to 35%. As the electrochromic materials, WO 3 or Prussian blue (PB), are usually blue colored, the color change is from transparent to blue. DNA, and the complexes: DNA-CTMA, DNA-DODA and DNA-PEDOT:PSS were also investigated as either hole carrier material (HTM) or polymer electrolyte in dye-sensitized solar cells (DSSC). The DNA-based samples as HTM in small DSSCs revealed a solar energy conversion efficiency of 0.56%. Polymer electrolytes of DNA-CTMA and DNA-DODA, both with 10 wt% of LiI/I 2 , applied in small DSSC, exhibited the efficiencies of 0.18 and 0.66%, respectively. The obtained results show that natural macromolecules-based membranes are not only environmentally friendly but are also promising materials to be investigated for several electrochemical devices. However, to obtain better performances more research is still needed.

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Section: Resultssupporting

confidence: 82%

Bio-inspired materials for electrochemical devices

Pawlicka¹,

Firmino²,

Sentanin³

et al. 2015

SPIE Proceedings

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“…Therefore, the NPEs samples were subjected to impedance measurements as a function of temperature. The linear increase of conductivity values, shown in Figure 5 , suggested a hopping charge movement, described by the Arrhenius model [ 30 , 31 ]. However, some differences were observed between Alg-based NPEs with SCa-3Na + ( Figure 5 a) and SCa-Li + ( Figure 5 b).…”

Section: Resultsmentioning

confidence: 99%

Nanocomposite Polymer Electrolytes of Sodium Alginate and Montmorillonite Clay

et al. 2021

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Nanocomposite polymer electrolytes (NPEs) were synthesized using sodium alginate (Alg) and either sodium (SCa-3-Na+)- or lithium (SCa-3-Li+)-modified montmorillonite clays. The samples were characterized by structural, optical, and electrical properties. SCa-3-Na+ and SCa-3-Li+ clays’ X-ray structural analyses revealed peaks at 2θ = 7.2° and 6.7° that corresponded to the interlamellar distances of 12.3 and 12.8 Å, respectively. Alg-based NPEs X-ray diffractograms showed exfoliated structures for samples with low clay percentages. The increase of clay content promoted the formation of intercalated structures. Electrochemical Impedance Spectroscopy revealed that Alg-based NPEs with 5 wt% of SCa-3-Na+ clay presented the highest conductivity of 1.96 × 10−2 S/cm2, and Alg with 10 wt% of SCa-3-Li+ showed conductivity of 1.30 × 10−2 S/cm2, both measured at 70 °C. From UV-Vis spectroscopy, it was possible to infer that increasing concentration of clay promoted a decrease of the samples’ transmittance and, consequently, an increase of their reflectance.

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“…363 The aforementioned properties were further improved by the immersion of the prepared membrane into 1ethyl-3-methylimidazolium tetrafluoroborate (EMImBF 4 ). Additionally, the physiochemical properties of the gelatin film can also be improved by cross-linking with formaldehyde, 364 The ionic conductivity of this gel electrolyte achieved 5.77 × 10 −4 S cm −1 , while the neat gelatin showed an ionic conductivity of 10 −5 S cm −1 . 364,365 A novel poly(acrylic acid-g-gelatin) gel polymer electrolyte was prepared and used in flexible QDSSC device fabrication.…”

Section: Cellulose and Itsmentioning

confidence: 99%

“…Additionally, the physiochemical properties of the gelatin film can also be improved by cross-linking with formaldehyde, 364 The ionic conductivity of this gel electrolyte achieved 5.77 × 10 −4 S cm −1 , while the neat gelatin showed an ionic conductivity of 10 −5 S cm −1 . 364,365 A novel poly(acrylic acid-g-gelatin) gel polymer electrolyte was prepared and used in flexible QDSSC device fabrication. 366 At room temperature, the conductivity of the prepared electrolyte was found to be 1.02 × 10 −2 S cm −1 , which was significantly enhanced to 1.41 × 10 −2 S cm −1 due to incorporation of polypyrrole (a conductive polymer).…”

Section: Cellulose and Itsmentioning

confidence: 99%

Electrospun Nanofiber-Based Electrolytes for Next-Generation Quasi-Solid Dye-Sensitized Solar Cells: A Review

Islam,

Hasan,

Akhtaruzzaman

et al. 2024

Energy Fuels

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In pursuit of alternative energy, many technologies have been explored over the decades by research communities. Among these, the utilization of solar radiation by solar cells has been extensively studied, especially in dye-sensitized solar cells (DSSCs). Among different DSSC electrolytes, polymer-based quasi-solid electrolytes have gained much attention, as they overcome shortcomings including limited ion movement and solvent evaporation of solid and liquid electrolytes, respectively. Moreover, in a polymerbased quasi-solid electrolyte, the porosity and amorphous nature of the electrolyte, which govern the ionic movement, are easily controllable. Electrospinning, an emerging method for fabricating controllable porous and amorphous polymer membranes, has been extensively used for the design of polymer-based quasi-solid electrolytes in recent decades. Low cost, ease of use, versatility, and great control over the morphology and physicochemical properties of the final product make electrospinning a potentially economically feasible technique for QDSSC electrolyte fabrication. In this comprehensive review, an overview of the recent inputs in the development of electrospun fiber-based quasi-electrolytes has been compiled. The performance of the electrospun fiber-based electrolytes has been critically reviewed based on numerous operational parameters as well as the physicochemical properties of the polymers. Key technical challenges and future research avenues for electrospinning-based QDSSCs are also discussed.

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Gelatin-HCl biomembranes with ionic-conducting properties

Cited by 12 publications

References 33 publications

Bio-inspired materials for electrochemical devices

Bio-inspired materials for electrochemical devices

Nanocomposite Polymer Electrolytes of Sodium Alginate and Montmorillonite Clay

Electrospun Nanofiber-Based Electrolytes for Next-Generation Quasi-Solid Dye-Sensitized Solar Cells: A Review

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