- Type of paper
: Paper in book
Title: Polyaniline. Electrochemical synthesis
- Authors:
- Duić, Ljerka (10760)
- Editors
- Salamone, Joseph
Publisher: CRC Press, Inc
Year: 1995
Number of references: 31
Language: engleski
Keywords: conducting polymers, polyaniline, electrochemical synthesis
- Type of paper
: Paper in journal
Title: Conducting Polymers
- Authors:
- Duić, Ljerka (10760)
Journal: Polimeri
ISSN: 0351-1871
Volume: 13
Year: 1992
Pages: from 20 to 25
Number of references: 28
Language: hrvatski
Summary: The explanations of conductivity for typical conducting
polymers:polyacetylene, polypyrrole and polyaniline are presented.
Theorigin and the meaning of the soliton, polaron and bipolaron asstates of
energy and as species which are responsible forconductivity is elaborated.
The connection between the moleculestructure of a conducting polymer and
the type of conductivityhas been pointed out, as well as the role of doping
in achievingconductivity up to metal level. A brief review of the methods
ofsynthesis is given for typical conducting polymers connested withthe
oxidation and doping process. A short review of new qualitiesin conducting
polymers which opens various possibilitied ofapplication in techique,
medicine and everyday life is presented.
Keywords: conducting polymers, soliton, polaron, bipolaron
- Type of paper
: Summary in proceedings
Title: The Influence of Media on the Initiation Reaction of the
Electrochemical Polymerization of Aniline
- Authors:
- Duić, Ljerka (10760)
- Mandić, Zoran (160011)
Proceedings title: 42nd ISE Meeting Abstracts
Language: engleski
Place: Montreux, Switzerland
Year: 1991
Pages: from 118 to 118
Meeting: 42nd Meeting of International Society of Electrochemistry
Held: from 08/25/91 to 08/30/91
Summary: The attention has been payed to the influence of the
supportingelectrolyte anions on the initiation reaction of
theelectrochemical polymerization of aniline under
cyclovoltammetricconditiins. It has been established that aniline
oxidationcurrent increases in the order: ClO4- < NO3- < Cl- < HSO4- andthe
anodic current of voltammetric peaks is complicated by theadsorption
effects. The pH effect on the aniline oxidationpotentials has also been
established.
Keywords: polyaniline, counter-ion effect, conducting polymer
- Type of paper
: Summary in proceedings
Title: The origin and characteristics of the middle peak in
cyclovoltammetric synthesis of polyaniline
- Authors:
- Marcelić, Eugen
- Duić, Ljerka (10760)
- Mandić, Zoran (160011)
Proceedings title: 44th ISE Meeting Abstracts
Language: engleski
Place: Berlin, Deutschland
Year: 1993
Pages: from 134 to 134
Meeting: 44th Meeting of International Society of Electrochemistry
Held: from 09/05/93 to 09/10/93
Summary: The appeaarnce of the middle peak in the
electrochemicalsynthesis of polyaniline, as well as its dependence on
thevariation of the experimental parametra (monomer concentration,anodic
potential) has been studied. The reaction path has beenoffered in which
polyaniline and p-aminodiphenilamine are finalproducts, but the
distribution of which depends on the ratio ofradical-cation/monomer
concentrations.
Keywords: polyaniline, p-aminodiphenil amine
- Type of paper
: Summary in proceedings
Title: Nucleation process in the growth of polyaniline film
- Authors:
- Mandić, Zoran (160011)
- Duić, Ljerka (10760)
- Kovačiček, Franjo (57020)
Proceedings title: 44th ISE Meeting Abstratcs
Language: engleski
Place: Berlin, Deutschland
Year: 1993
Pages: from 0 to 0
Meeting: 44th Meeting of International Society of Electrochemistry
Held: from 09/05/93 to 09/10/93
Summary: The initial stages of polyaniline (PANI) film formation in
theelectrochemical synthesis has been studied under potential
stepconditions in different supporting electrolytes (H2SO4, HCl,HNO3,
HClO4) and for different monomer concentrations.
The resulting current-time tranzients have been analysed showingtwo
discernable stages of the film growth. SEM images taken atthe times
characteristic of the first and the second stage showthat during the first
stage (t1) a compact layer has been formed,and during the second stage (t2)
SEM images show clearly nucleigrown on a compact layer. The influence of
the anion present isobserved not only on the current-time transients, but
also on theshape of nuclei.
Keywords: polyaniline, nucleation process
- Type of paper
: Summary in proceedings
Title: The influence of media on the initiation reaction of the
electrochemical polymerization of aniline
- Authors:
- Duić, Ljerka (10760)
- Mandić, Zoran (160011)
Proceedings title: Knjiga radova XII jugoslavenskog simpozija o elektrokemiji
Language: hrvatski
Place: Igman, Bosna i Hercegovina
Year: 1991
Pages: from 84 to 84
Meeting: XII jugoslavenski simpozij o elektrokemiji
Held: from 06/03/91 to 06/08/91
Summary: The investigations are directed on the initial reaction
inpolymerization of aniline. The measurements are carried out
undercyclovoltammteric conditions, at two concentrations of anilineand for
supporting electrolytes containing different anions (Cl-,ClO4-, HSO4-,
NO3-) in the pH region 0-12. It has beenestablished that oxidation reaction
of aniline in acidic mediumproceed within the whole pH region, and that the
rate ofoxidation and polymerization depend on anion present.
Keywords: polyaniline, conducting polymers
- Type of paper
: Summary in proceedings
Title: Electrochemical characterization of chemically sinthesized
polypyrrole in non-aqueous solution
- Authors:
- Budimir, Milana
- Sak-Bosnar, Milan (130381)
- Kovač, Spomenka (76076)
- Kukulj, Dobrila
- Duić, Ljerka (10760)
Proceedings title: Knjiga radova XII jugoslavenskog simpozija o elektrokemiji
Language: hrvatski
Place: Igman, Bosna i Hercegovina
Year: 1991
Pages: from 86 to 87
Meeting: XII jugoslavenski simpozij o elektrokemiji
Held: from 06/03/91 to 06/08/91
Summary: The chemical polymerization of pyrrole in acetonitril has
beencarried out using I2 and Br2 as oxidants and dopants. Theinfluence of
time and molar ratio of oxidant/pyrrol on the yieldof polypyrrole has been
examined, as well as the influence ofpolymerization temperature on the
conductivity of the resultingpolypyrrole.
It has been established that besides the temperature ofpolymerization the
ratio of pyrrole/oxidant influences theconductivity of polypyrrole.
Keywords: polypyrrole, conducting polymers
- Type of paper
: Summary in proceedings
Title: The Electropolymerization of Aniline by potentiostatic
method
- Authors:
- Mandić, Zoran (160011)
- Duić, Ljerka (10760)
- Kovačiček, Franjo (57020)
Proceedings title: Sinopsisi XIII Skupa hrvatskih kemičara
Language: hrvatski
Place: Zagreb
Year: 1993
Pages: from 103 to 103
Meeting: XIII Skup hrvatskih kemičara
Held: from 02/08/93 to 02/10/93
Summary: The influence of different experimental parametra on
thenucleation process as well as on the growth and characteristcs
ofpolyaniline (PANI) layer has been investigated by potential stepmethod in
different supporting electrolytes.
The results obtained for the layers examined by SEM at differentstages,
show that the electrochemcal polymerization of anilineconsists of two
stages. First stage is the appearance and growthof nuclei, and the second
one is the growth of already formedPANI layer. Process of
electropolymerization depends strongly onexperimental conditions. The
differences obtained in current-timetransients as well as in the
electrochemical behaviour of PANIare explained by twodimensional (2D) and
threedimensional (3D)nucleation process.
Keywords: polyaniline, conducting polymers, nucleation
- Type of paper
: Summary in proceedings
Title: The origin and characteristics of the middle peak in
cyclovoltammetricsynthesis of polyaniline
- Authors:
- Marcelić, Eugen
- Duić, Ljerka (10760)
- Mandić, Zoran (160011)
Proceedings title: Sinopsisi XIII Skupa kemičara Hrvatske
Language: hrvatski
Place: Zagreb
Year: 1993
Pages: from 247 to 247
Meeting: XIII Skup hrvatskih kemičara
Held: from 02/08/93 to 02/08/93
Summary: The appearace and the characteristics of the middle peak in
thefirst scan of voltammograms depending on switching potential andscan
rate has been followed. The characteristics of the middlepeak during 10
cycles of synthesis have been examined. It hasbeen found that the middle
peak disappears after the leaching outin the supporting electrolyte. The
leached out product examinedthereafter gives a pairs of peaks corresponding
to the middlepeak. The middle peak is attributed to the
p-aminodiphenil-amine,a side product in the synthesis and in a degradation
ofpolyaniline.
Keywords: polyaniline, conductin polymers
- Type of paper
: Summary in proceedings
Title: The influence of supporting electrolyte on morphology and
conductivityof electrochemically sinthesized polyaniline
- Authors:
- Duić, Ljerka (10760)
- Mandić, Zoran (160011)
- Kovačiček, Franjo (57020)
Proceedings title: Sinopsisi XIII Skupa hrvatskih kemičara
Language: hrvatski
Place: Zagreb
Year: 1993
Pages: from 102 to 102
Meeting: XIII Skup hrvatskih kemičara
Held: from 02/08/93 to 02/10/93
Summary: The electrochemical synthesis of polyaniline (PANI) has
beencarried out under cyclovoltammetric conditions in aqeous solutionof
following electrolytes: H2SO4, HCl, HNO3 and HClO4. Themorphology of the
obtained PANI layers has been examined byscanning electron microscopy
(SEM), and the conductivity has beendetermined by four probe method.
It has been found that the morphology of PANI layer dependssignificantly on
the anion present. PANI synthesized from thesolution of oxyacids results in
a sponge-like structure, whilePANI from hydrochloric acid results in more
orderly structurewith discernable fibres. The morphology of the deposit
influencesstrongly the electrical conductivity.
Keywords: polyaniline, conducting polymers
- Type of paper
: Summary in proceedings
Title: Electrically conducting polymers
- Authors:
- Duić, Ljerka (10760)
Proceedings title: Knjiga radova XII jugoslavenskog simpozija o elektrokemiji
Language: hrvatski
Place: Igman, Bosna i Hercegovina
Year: 1991
Pages: from 7 to 8
Meeting: XII jugoslavenski simpozij o elektrokemiji
Held: from 09/03/91 to 09/08/91
Summary: Fundamental investigations of conducting polymers (CP) deal
withelucidation of conductivity mechanism, while typicalelectrochemical
investigations deal with the elucidation of theinitial reaction in the
process of the electrochemicalpolymerization, the explanations of the
reaction redox mechanismswhich are essential in transformation from a
conductive to anonconductive state, the influence of the dopant species
onchemical, electrochemical and physical properties, on
morphology,crystalinity etc.
Keywords: conducting polymers, soliton, polaron, bipolaron
- Type of paper
: Summary in proceedings
Title: Electrocatalytic activity of polyaniline
- Authors:
- Duić, Ljerka (10760)
- Mandić, Zoran (160011)
- Kovačiček, Franjo (57020)
Proceedings title: 45th Annual Meeting of the International Society of Electrochemistry, Abstracts
Language: engleski
Place: Porto, Portugal
Year: 1994
Pages: from V-17 to V-17
Meeting: 45th Meeting of International Society of Electrochemistry
Held: from 08/28/94 to 09/02/94
Summary: A layer of PANI is electrochemicaly deposited on Pt
electrode by use of cyclic voltammetry and potential step methods. PANI
layers of different thickness were obtained from aniline solutions,
Can=0.1M, using H2SO4 and HClO4 supporting electrolytes. The
electrocatalytic activity of PANI layers was examined by cyclic votammetry
for the following systems, quinone/hydroquinone, Fe2+/Fe3+ and
Fe(CN)64-/Fe(CN)63-. The results obtained on PANI electrode indicate the
catalytic activity of the PANI substrate which is demonstrated in increased
reversibility of the systems examined. The electrocatalytic activity of
PANI layer depends also on the electrolyte used in the synthesis of PANI.
Under the same exp. conditions, PANISO4 exhibits higher electrocatalytic
activity than PANIClO4. The difference in electrocatalytic activity is
attributed to the difference in their morphology and the influence of the
anion present.
- Type of paper
: Summary in proceedings
Title: Reaction mechanisms in the electrochemical synthesis of
polyaniline
- Authors:
- Duić, Ljerka (10760)
- Kovač, Spomenka (76076)
- Mandić, Zoran (160011)
Proceedings title: IV Hrvatski simpozij o kemiji i tehnologiji makromolekula
Language: hrvatski
Place: Zagreb
Year: 1995
Pages: from 427 to 427
Meeting: IV Hrvatski simpozij o kemiji i tehnologiji makromolekula
Held: from 02/06/95 to 02/08/95
- Type of paper
: Summary in proceedings
Title: Polyaniline - catalytic support for elecrooxidation of
hydroquinone and Fe2+
- Authors:
- Mandić, Zoran (160011)
- Duić, Ljerka (10760)
Proceedings title: XIV skup hrvatskih kemičara, sinopsisi
Language: hrvatski
Place: Zagreb
Year: 1995
Pages: from 338 to 338
Meeting: XIV SKUP HRVATSKIH KEMIčARA
Held: from 02/06/95 to 02/08/95
- Type of paper
: Ph.D.
Title: The investigations of the mechanism of the electrochemical
synthesis and deposition of polyaniline and properties of the resulting
layers
Faculty: Fakultet kemijskog inženjerstva i tehnologije Sveučilište u Zagrebu
Author: MANDIĆ ZORAN
Date of defense: 10/13/95
Language: hrvatski
Number of pages: 185
- Type of paper
: M.A.
Title: The synthesis and characterization of electrically
conducting polyaniline
Faculty: Prirodoslovno-matematički fakultet Sveučilište u Zagrebu
Author: MANDIĆ ZORAN
Date of defense: 12/04/91
Language: hrvatski
Number of pages: 111
- Type of paper
: Mentorship
Title: Synthesis and characterization of electrically conducting
polyaniline
Faculty: Prirodoslovno-matematički fakultet Sveučilište u Zagrebu
Mentor: DUIĆ LJERKA
Date of defense: 12/04/91
Number of pages: 111
Author: Mandić Zoran
Degree level: M.A.
- Type of paper
: Mentorship
Title:
Faculty: Fakultet kemijskog inženjerstva i tehnologije Sveučilište u Zagrebu
Mentor: DUIĆ LJERKA
Date of defense: 10/13/95
Number of pages: 185
Author: Mandić Zoran
Degree level: Ph.D.