Spectroscopic investigation of the interactions between emeraldine base polyaniline and Eu(III) ions

Izumi, Celly Mieko Shinohara; Brito, Hermi F.; Ferreira, Ana Maria D.C.; Constantino, Vera Regina Leopoldo; Temperini, Márcia L. A.

doi:10.1016/j.synthmet.2008.10.006

Cited by 13 publications

(4 citation statements)

References 44 publications

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“…The Raman spectra of the composites illustrate the typical signals of PANI [ 50 , 59 , 60 ] whose principal bands, at 1590 and 1558 cm −1 , correspond to quinine-type rings and carbon–carbon (ring’s single and double band stretching vibrations), respectively [ 61 , 62 ]. Additionally, distinct bands caused by imine’s C=N stretching modes at 1482 cm −1 and the amine group’s C-N stretching at 1221 cm −1 can be detected.…”

Section: Resultsmentioning

confidence: 99%

Synthesis and Characterization of Polyaniline Emeraldine Salt (PANI-ES) Colloids Using Potato Starch as a Stabilizer to Enhance the Physicochemical Properties and Processability

Boudjelida,

Li,

Djellali

et al. 2024

Materials

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Conductive polymers, such as polyaniline (PANI), have interesting applications, ranging from flexible electronics, energy storage devices, sensors, antistatic or anticorrosion coatings, etc. However, the full exploitation of conductive polymers still poses a challenge due to their low processability. The use of compatible stabilizers to obtain dispersible and stable colloids is among the possible solutions to overcome such drawbacks. In this work, potato starch was used as a steric stabilizer for the preparation of colloidal polyaniline (emeraldine salt, ES)/starch composites by exploiting the oxidative polymerization of aniline in aqueous solutions with various starch-to-aniline ratios. The polyaniline/starch bio-composites were subjected to structural, spectroscopic, thermal, morphological, and electrochemical analyses. The samples were then tested for their dispersibility/solubility in a range of organic solvents. The results demonstrated the formation of PANI/starch biocomposites with a smaller average size than starch particles, showing improved aqueous dispersion and enhanced solubility in organic solvents. With respect to previously reported PANI-EB (emeraldine base)/starch composites, the novel colloids displayed a lower overall crystallinity, but the conductive nature of PANI-ES enhanced its electrochemical properties, resulting in richer redox chemistry, particularly evident in its oxidation behavior, as observed through cyclic voltammetry. Finally, as proof of the improved processability, the colloids were successfully integrated into a thin polyether sulfone (PES) membrane.

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Section: Resultsmentioning

confidence: 99%

Synthesis and Characterization of Polyaniline Emeraldine Salt (PANI-ES) Colloids Using Potato Starch as a Stabilizer to Enhance the Physicochemical Properties and Processability

Boudjelida,

Li,

Djellali

et al. 2024

Materials

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show abstract

“…The Raman spectra of the composites illustrate the typical signals of PANI [50,59,60] whose principal bands, at 1590 and 1558 cm -1 , correspond to quinine-type rings and carbon-carbon (ring's single and double band stretching vibrations), respectively [61,62]. Additionally, distinct bands, caused by the imine's C=N stretching modes at 1482 cm -1 and the amine group's C-N stretching at 1221 cm -1 , can be detected.…”

Section: Ramanmentioning

confidence: 95%

Synthesis and Characterization of Polyaniline Emeraldine Salt (PANI-ES) Colloids Using Potato Starch as a Stabilizer, to Enhance the Physicochemical Properties and Processibility

Boudjelida,

Li,

Djellali

et al. 2024

Preprint

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The processability of conductive polymers such as polyaniline (PANI) still poses a challenge due to their properties. The use of stabilizers, compatible and able to interact with PANI, to obtain dispersible and stable colloids is described in this work. To this aim, potato starch has been used as a steric stabilizer for the preparation of polyaniline (emeraldine salt, ES)/starch biocomposites, by exploiting oxidative polymerization of aniline in aqueous solutions containing different ratios of aniline and starch (% w/w). The polyaniline/starch biocomposites were subjected to structural and spectroscopic analyses, thermal analysis, morphological analysis and electrochemical analysis. The samples were then tested for their dispersibility/solubility in various organic solvents. The results showed the formation of PANI/starch biocomposites with an overall smaller size than starch particles, with improved aqueous dispersion and solubility in organic solvents. Although X-ray diffraction and differential scanning calorimetry analyses indicated a loss of crystallinity in the biocomposites, the cyclic voltammetry tests showed that all PANI ES/starch biocomposites display improved redox exchange properties.

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“…Based on the discussion of XPS, the corresponding interaction was illustrated in Scheme 1. 44,61,62 As soon as the addition of PmPD-Cu nanoparticles into the As(V) solution, abundant As(V) was adsorbed by ]N +components via electrostatic attraction. Meanwhile, the redox reaction between part of As(V) and nearby imine group (-NH-) occurred which produced the ]Nand As(III).…”

Section: Arsenic Adsorption Ability Of Pmpd Particlesmentioning

confidence: 99%

Sustainable synthesis of hollow Cu-loaded poly(m-phenylenediamine) particles and their application for arsenic removal

et al. 2015

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Spectroscopic investigation of the interactions between emeraldine base polyaniline and Eu(III) ions

Cited by 13 publications

References 44 publications

Synthesis and Characterization of Polyaniline Emeraldine Salt (PANI-ES) Colloids Using Potato Starch as a Stabilizer to Enhance the Physicochemical Properties and Processability

Synthesis and Characterization of Polyaniline Emeraldine Salt (PANI-ES) Colloids Using Potato Starch as a Stabilizer to Enhance the Physicochemical Properties and Processability

Synthesis and Characterization of Polyaniline Emeraldine Salt (PANI-ES) Colloids Using Potato Starch as a Stabilizer, to Enhance the Physicochemical Properties and Processibility

Sustainable synthesis of hollow Cu-loaded poly(m-phenylenediamine) particles and their application for arsenic removal

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