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Papers by Franciani Cassia Sentanin

Research paper thumbnail of Investigation of polymer electrolytes based on agar and ionic liquids

eXPRESS Polymer Letters

The possibility to use natural polymer as ionic conducting matrix was investigated in this study.... more The possibility to use natural polymer as ionic conducting matrix was investigated in this study. Samples of agarbased electrolytes with different ionic liquids were prepared and characterized by physical and chemical analyses. The ionic liquids used in this work were 1-ethyl-3-methylimidazolium ethylsulfate, [C2mim][C2SO4], 1-ethyl-3-methylimidazolium acetate, [C2mim][OAc] and trimethyl-ethanolammonium acetate, [Ch][OAc]. Samples of solvent-free electrolytes were prepared and characterized by ionic conductivity measurements, thermal analysis, electrochemical stability, X-ray diffraction, scanning electron microscopy and Fourier Transform infrared spectroscopy. Electrolyte samples are thermally stable up to approximately 190°C. All the materials synthesized are semicrystalline. The electrochemical stability domain of all samples is about 2.0 V versus Li/Li+. The preliminary studies carried out with electrochromic devices (ECDs) incorporating optimized compositions have confirmed tha...

Research paper thumbnail of Innovative electrolytes based on chitosan and thulium for solid state applications: Synthesis, structural, and thermal characterization

Journal of Electroanalytical Chemistry

Research paper thumbnail of Electrochemical Applications of Electrolytes Based on Ionic Liquids

ECS Transactions

The potential utility of room temperature ionic liquids as electrolytes in current electrochemica... more The potential utility of room temperature ionic liquids as electrolytes in current electrochemical applications has been explored. Hence, the electrochemical behavior of [Ni(tmc)] Br-2 complex at a glassy carbon electrode in the absence or in the presence of unsaturated halides in the ionic liquids, 1-ethyl-3-methylimidazolium ethylsulfate, [C(2)mim][C2SO4] and N,N,-Ntrimethyl- N-(2-hydroxyethyl) ammonium bis(trifluoromethylsulfonyl) imide, [N-1 (1) (1) (2(OH))][NTf2], has been examined by cyclic voltammetry. It was observed that [Ni(tmc)](2+) complex is reduced in a reversible one-electron step and the electrogenerated [Ni(tmc)](+) complex catalytically reduces the carbon-halogen bond of unsaturated halides. The potencial use of natural ionic conducting polymer matrixes was also investigated. Samples of natural macromolecules-based electrolytes with the ionic liquid 1-ethyl-3-methylimidazolium ethylsulfate, [C(2)mim][C2SO4], were prepared and characterized. The preliminary studies ...

Research paper thumbnail of Ionically conducting Er3+-doped DNA-based biomembranes for electrochromic devices

Electrochimica Acta

Biopolymer-based membranes have particular interest due to their biocompatibility, Biodegradabili... more Biopolymer-based membranes have particular interest due to their biocompatibility, Biodegradability, easy extraction from natural resources and low cost. The incorporation of Er3+ ions into natural macromolecule hosts with the purpose of producing highly efficient emitting phosphors is of widespread interest in materials science, due to their important roles in display devices. Thus, biomembranes may be viewed as innovative materials for the area of optics. This paper describes studies of luminescent material DNA-based membranes doped with erbium triflate and demonstrates that their potential technological applications may be expanded to electrochromic devices. The sample that exhibits the highest ionic conductivity is DNA10Er, (1.17 × 10−5 and 7.76 × 10−4 S.cm−1 at 30 and 100 °C, respectively). DSC, XRD and POM showed that the inclusion of the guest salt into DNA does not change significantly its amorphous nature. The overall redox stability was ca. 2.0 V indicating that these mate...

Research paper thumbnail of Functional novel polymer electrolytes containing europium picrate

Materials Research Innovations, 2011

ABSTRACT Novel polymer electrolytes based on either di-ureasil ormolytes or gelatin and containin... more ABSTRACT Novel polymer electrolytes based on either di-ureasil ormolytes or gelatin and containing europium picrate [Eu(pic)(3)] were prepared, characterised and compared by conductivity measurements, thermal analysis and electrochemical stability, X-ray diffraction, scanning electron microscopy and photoluminescence spectroscopies. Small electrochromic devices (ECDs) with gelatin-europium salt optimised composition were assembled and characterised. The obtained results confirmed that these materials may perform as satisfactory multifunctional component layers in the field of ECD based devices.

Research paper thumbnail of Investigation of polymer electrolytes based on agar and ionic liquids

eXPRESS Polymer Letters

The possibility to use natural polymer as ionic conducting matrix was investigated in this study.... more The possibility to use natural polymer as ionic conducting matrix was investigated in this study. Samples of agarbased electrolytes with different ionic liquids were prepared and characterized by physical and chemical analyses. The ionic liquids used in this work were 1-ethyl-3-methylimidazolium ethylsulfate, [C2mim][C2SO4], 1-ethyl-3-methylimidazolium acetate, [C2mim][OAc] and trimethyl-ethanolammonium acetate, [Ch][OAc]. Samples of solvent-free electrolytes were prepared and characterized by ionic conductivity measurements, thermal analysis, electrochemical stability, X-ray diffraction, scanning electron microscopy and Fourier Transform infrared spectroscopy. Electrolyte samples are thermally stable up to approximately 190°C. All the materials synthesized are semicrystalline. The electrochemical stability domain of all samples is about 2.0 V versus Li/Li+. The preliminary studies carried out with electrochromic devices (ECDs) incorporating optimized compositions have confirmed tha...

Research paper thumbnail of Innovative electrolytes based on chitosan and thulium for solid state applications: Synthesis, structural, and thermal characterization

Journal of Electroanalytical Chemistry

Research paper thumbnail of Electrochemical Applications of Electrolytes Based on Ionic Liquids

ECS Transactions

The potential utility of room temperature ionic liquids as electrolytes in current electrochemica... more The potential utility of room temperature ionic liquids as electrolytes in current electrochemical applications has been explored. Hence, the electrochemical behavior of [Ni(tmc)] Br-2 complex at a glassy carbon electrode in the absence or in the presence of unsaturated halides in the ionic liquids, 1-ethyl-3-methylimidazolium ethylsulfate, [C(2)mim][C2SO4] and N,N,-Ntrimethyl- N-(2-hydroxyethyl) ammonium bis(trifluoromethylsulfonyl) imide, [N-1 (1) (1) (2(OH))][NTf2], has been examined by cyclic voltammetry. It was observed that [Ni(tmc)](2+) complex is reduced in a reversible one-electron step and the electrogenerated [Ni(tmc)](+) complex catalytically reduces the carbon-halogen bond of unsaturated halides. The potencial use of natural ionic conducting polymer matrixes was also investigated. Samples of natural macromolecules-based electrolytes with the ionic liquid 1-ethyl-3-methylimidazolium ethylsulfate, [C(2)mim][C2SO4], were prepared and characterized. The preliminary studies ...

Research paper thumbnail of Ionically conducting Er3+-doped DNA-based biomembranes for electrochromic devices

Electrochimica Acta

Biopolymer-based membranes have particular interest due to their biocompatibility, Biodegradabili... more Biopolymer-based membranes have particular interest due to their biocompatibility, Biodegradability, easy extraction from natural resources and low cost. The incorporation of Er3+ ions into natural macromolecule hosts with the purpose of producing highly efficient emitting phosphors is of widespread interest in materials science, due to their important roles in display devices. Thus, biomembranes may be viewed as innovative materials for the area of optics. This paper describes studies of luminescent material DNA-based membranes doped with erbium triflate and demonstrates that their potential technological applications may be expanded to electrochromic devices. The sample that exhibits the highest ionic conductivity is DNA10Er, (1.17 × 10−5 and 7.76 × 10−4 S.cm−1 at 30 and 100 °C, respectively). DSC, XRD and POM showed that the inclusion of the guest salt into DNA does not change significantly its amorphous nature. The overall redox stability was ca. 2.0 V indicating that these mate...

Research paper thumbnail of Functional novel polymer electrolytes containing europium picrate

Materials Research Innovations, 2011

ABSTRACT Novel polymer electrolytes based on either di-ureasil ormolytes or gelatin and containin... more ABSTRACT Novel polymer electrolytes based on either di-ureasil ormolytes or gelatin and containing europium picrate [Eu(pic)(3)] were prepared, characterised and compared by conductivity measurements, thermal analysis and electrochemical stability, X-ray diffraction, scanning electron microscopy and photoluminescence spectroscopies. Small electrochromic devices (ECDs) with gelatin-europium salt optimised composition were assembled and characterised. The obtained results confirmed that these materials may perform as satisfactory multifunctional component layers in the field of ECD based devices.