SVIBOR - Papers quoted in CC - project code: 1-07-037
MINISTRY OF SCIENCE AND TECHNOLOGY
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Papers quoted in Current Contents on project 1-07-037
Quoted papers: 7
Other papers: 17
Total: 24
Title: Chemical and Electrochemical Characterization of
Chemically Synthesized Conducting Polypyrrole
- Authors:
- Sak-Bosnar, Milan (130381)
- Budimir, Milana
- Kovač, Spomenka (76076)
- Kukulj, Dobrila
- Duić, Ljerka (10760)
Journal: J. Polym. Sci., Part A
ISSN: 0887-624
Volume: 30
Year: 1992
Pages: from 1609 to 1614
Number of references: 24
Language: engleski
Summary: The conducting polypyrrole chemically sinthesized in water,
using the variable concentrations of FeCl3 and CuCl2 as oxidazing agents,
was chemically and electrochemically characterized and compared with
electrochemically generated polypyrrole. It can be concluded that a mixture
of dimer and trimer was obtained using CuCl2 and a dimer composition using
FeCl3. Cyclic voltammetric studies showed no evidence of polypyrrole
decomposition after repetitive cycling. Cyclic voltammograms also showed
that after the oxidation reaction a high capacitive current remained.
Cyclic voltammogram of the polypyrrole synthesized by oxidation with CuCl2
showed differnet shape, probably influenced by the presence of copper ions
incorporated in polymers.
Keywords: polypyrrole, conducting polymers
Title: The application of zero-current potentiometry in chemical
synthesis and characterization of polypyrrole using electrochemical sensors
- Authors:
- Budimir, Milana
- Sak-Bosnar, Milan (130381)
- Kovač, Spomenka (76076)
- Duić, Ljerka (10760)
Journal: Synthetic Metals
ISSN: 0379-6779
Volume: 39
Year: 1991
Pages: from 359 to 365
Number of references: 9
Language: engleski
Summary: The chemical polymerization of pyrrole to highly conducting
polypyrrole in aqueous and acetonitrile solutions using various oxidazing
agents was studied. The course of synthesis wasfollowed using zero-current
potentiometry with a platinumreference electrode as redox sensor. The
obtained results can beused for a better understending of pyrrole
polymerization kinetics. In addition, the halogenide-ion content as counter
ion can be determined potentiometrically after chemical degradation of
polypyrrole using a chloride-selective electrode as sensor.
Keywords: polypyrrole, conducting polymers, zero-current potentiometry
Title: Counter-ion and pH effect on the electrochemical synthesis
of polyaniline
- Authors:
- Duić, Ljerka (10760)
- Mandić, Zoran (160011)
Journal: J. Electroanal. Chem.
ISSN: 0022-0728
Volume: 335
Year: 1992
Pages: from 207 to 221
Number of references: 32
Language: engleski
Summary: The effect of different electrolytes at various pH values
on the electropolymerization of aniline from aqueous solutions have been
studied. It has been found that polyaniline can be synthesized within the
whole pH range investigated, provided that the proper counter-ion is
present. Distinct regions of differnt pH effect on aniline polymerization
have been identified and the corresponding reaction mechanisms suggested.
It was also found that polyaniline synthesized in the solutions having high
pH values, when transferred to acidic solutions, switched from a
non-conductiveto a conductive state, giving voltammograms and FTIR spectra
characteristic of PANI synthesized in acidic media.
Keywords: polyaniline, conducting polymers, counter-ion effect, pH effect
Title: The Effect of Supporting Electrolyte on the
Electrochemical Synthesis, Morphology and Conductivity of Polyaniline
- Authors:
- Duić, Ljerka (10760)
- Mandić, Zoran (160011)
- Kovačiček, Franjo (57020)
Journal: J. Polym. Sci., Part A
ISSN: 0887-624
Volume: 32
Year: 1994
Pages: from 105 to 111
Number of references: 24
Language: engleski
Summary: Electrochemical synthesis of polyanilne (PANI) was carried
outunder cyclovoltammetric conditions using H2SO4, HCl, HNO3 and HClO4 as
supporting electrolytes. The observed different rate of PANI deposit growth
dependig on the acid in the solution has been explained on the grounds of
different degree of specific adsorption for particulat anion. It has been
found that morphology of the deposit depends greatly upon the anion
presentin the solution. Thus, PANI synthesized from the solution of
oxyacids results in a dense sponge-like structure while PANI from the
hydrochloric acid solution results in a spaghetti-like structure. The
structure of the deposit influences the conductivity, being higher for a
dense deposit from oxyacid solutions and three orders of magnitude lower in
case of a deposit from hydrochloric acid solution.
Keywords: polyaniline, conducting polymers
Title: Polymer-dimer distribution in the electrochemical
synthesis of polyaniline
- Authors:
- Duić, Ljerka (10760)
- Mandić, Zoran (160011)
- Kovač, Spomenka (76076)
Journal: Electrochimica Acta
Number: 11
ISSN: 0013-4686
Volume: 40
Year: 1995
Pages: from 1681 to 1688
Number of references: 29
Language: engleski
Summary: Distribution of major products associated with the process
of PANI synthesis is discussed. On the basis of the results obtained the
dependence of that distribution upon monomer concentration, switching
potential and potential of synthesis is discussed, the corresponding
reaction scheme is given and terms for the reaction rates derived. The
conditions governing the polymer-dimer distribution are formulated. The
origin of the middle peak, appearing during the PANI synthesis, is
discussed in the light of specific experimental conditions, and species
corresponding to it are identified. A reaction scheme for the hydrolisis
pathway of dimer is confirmed.
Keywords: polyaniline, 4-aminodiphenylamine, hydrolisis, electrooxidation of aniline, electropolymerization
Title: Polyaniline as electrocatalytic material
- Authors:
- Mandić, Zoran (160011)
- Duić, Ljerka (10760)
Journal: J. Electroanal. Chem.
ISSN: 0022-0728
Number of references: 41
Summary: A catalytic influence of polyaniline (PANI) film, prepared
from sulphuric and perchloric acid solutions, on hydroquinone/benzoquinone
(HQ/BQ) and Fe2+/3+ reactions has been investigated. The effect of PANI
layer thickness on redox reactions has been established, as well as
different kinetics depending on the counter-ion incorporated. The location
of the reactions taking place is discussed. The evidence is given for PANI
metal-like behaviour at potentials of emeraldine (EM) existence and
redox-polymer behaviour at potentials of pernigraniline (PE) existence.
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