EC-AFM investigation of reversible volume changes with electrode potential in polyaniline

Singh, Parminder; Mahajan, Sumeet; Rajwade, Shantanu; Contractor, A.Q.

doi:10.1016/j.jelechem.2008.10.005

Cited by 43 publications

(21 citation statements)

References 44 publications

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“…It is well known that, at high surfactant concentrations, a sphere to rod transition of micelles is obtained [40,41]. The sphere-rod transitions of micelles guide the growth to nanotubular [36] and microtubular [42] morphologies. For this reason, among the same co-monomer mixtures, more well-defined tubular features were present at both P(An-co-SA) and P(An-co-OA) AFM topographic images of lower An concentration, whereas surfactant concentration (SA or OA) was higher (An:ABSA molar ratio 1:10).…”

Section: Surface Morphology By Afm Analysismentioning

confidence: 99%

Electrodeposition of self-doped copolymers of aniline with aminobenzensulfonic acids on stainless steel. Morphological and electrochemical characterization

Michael

Prochaska

Sazou

2015

J Solid State Electrochem

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Self-doped conducting polyaniline (PAn) films were deposited on passive stainless steel (SS) AISI304 substrates by cyclic potential sweep deposition from aqueous mixed monomer solutions of aniline (An) and different aminobenzenesulfonic acids (2-, 3-or, 4-aminobenzenesulfonic acid, ABSA), without the presence of a supporting electrolyte. Two different An concentrations were examined (0.01 and 0.05 M), while the concentration of each ABSA used was kept constant at 0.

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Section: Surface Morphology By Afm Analysismentioning

confidence: 99%

Electrodeposition of self-doped copolymers of aniline with aminobenzensulfonic acids on stainless steel. Morphological and electrochemical characterization

Michael

Prochaska

Sazou

2015

J Solid State Electrochem

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“…4 and 5 demonstrate AFM images of PANI coatings modified by the addition of 10 and 50 mmol dm À3 OPDA. It was reported that AFM can be successfully used in the PANI morphology investigation [26,27]. It appears that the addition of 50 mmol dm À3 OPDA (Fig.…”

Section: Atomic Force Microscopy Investigationmentioning

confidence: 92%

Influence of the OPDA additions on impedance response and on anion exchange property of the modified PANI

Žic

2010

Journal of Electroanalytical Chemistry

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“…In particular, the diameter of the nanofibers obtained by using FeCl 3 Á6H 2 O was measured to be 20-30 nm, which was significantly thinner than that of the PANI-NFs obtained by using APS (130 nm). Deoxyribonucleic acid (DNA)-templated PANI-NFs and their networks were synthesized using the oxidative polymerization of aniline with APS [72], hydrogen peroxide/ horseradish peroxidase (H 2 O 2 /HRP) [72][73][74], FeCl 3 Á6H 2 O [75], or by photo-oxidation using a Ru complex as photo-oxidant [72]. Deoxyribonucleic acid (DNA)-templated PANI-NFs and their networks were synthesized using the oxidative polymerization of aniline with APS [72], hydrogen peroxide/ horseradish peroxidase (H 2 O 2 /HRP) [72][73][74], FeCl 3 Á6H 2 O [75], or by photo-oxidation using a Ru complex as photo-oxidant [72].…”

Section: Soft (Chemical) Template Methodsmentioning

confidence: 99%

Polyaniline Nanostructures

Ćirić‐Marjanović

2010

Nanostructured Conductive Polymers

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Polyaniline (PANI) is one of the most extensively studied conducting polymers because of its simple synthesis [1] and doping/dedoping chemistry [2], low cost, high conductivity, and excellent environmental stability. PANI has a wide applicability in rechargeable batteries [3], erasable optical information storage [4], shielding of electromagnetic interference [5], microwave-and radar-absorbing materials [6], sensors [7], indicators [8], catalysts [9], electronic and bioelectronic components [10], membranes [11], electrochemical capacitors [12], electrochromic devices [13], nonlinear optical [14] and light-emitting devices [15], electromechanical actuators [16], antistatic [17] and anticorrosion coatings [18]. Its electromagnetic and optical properties depend mostly on its oxidation state and degree of protonation [19]. The green emeraldine salt form of PANI is conducting ($1-10 S cm À1 for granular powders) [1]. It contains, depending on the synthetic route, variousunits (in the preceeding formulae B, Q and A À denote a benzenoid ring, quinonoid ring and dopant anion, respectively). The blue emer-The preparation of bulk quantities of conducting granular PANI is usually performed Nanostructured Conductive PolymersEdited by Ali Eftekhari by the oxidative polymerization of aniline with ammonium peroxydisulfate (APS) in an acidic aqueous solution (initial pH < 2.0) [1]. Colloidal PANI nanoparticles are prepared by dispersion polymerization of aniline in the presence of various colloidal stabilizers [20,21]. The average size of colloidal PANI nanoparticles decreases with increasing stabilizer/aniline ratio. PANI colloids often have nonspherical (rice grain, needle-like, etc.) core-shell morphology. The colloidal nanoparticle core most likely has a composite nature, i.e. it is composed of both the PANI and the incorporated stabilizer, while the shell is formed by the stabilizer. Nowadays, conducting PANI nanostructures are the focus of intense research owing to their significantly enhanced dispersibility and processability, and substantially improved performance in many applications, in comparison with granular and colloidal PANI [22][23][24][25][26][27]. The continuously growing interest in the study of zero-dimensional (0-D) (solid nanospheres), one-dimensional (1-D) (nanofibers (nanowires), nanorods (nanosticks), nanoneedles, rice-like nanostructures, nanotubes), two-dimensional (2-D) (nanoribbons (nanobelts), nanosheets (nanoplates, nanoflakes, nanodisks, leaf-like nanostructures), nanorings (cyclic nanostructures), net-like nanostructures), and three-dimensional (3-D) PANI nanostructures (hollow nanospheres, dendritic and polyhedral nanoparticles, flower-like, rhizoid-like, brain-like, urchin-like, and star-like nanostructures, etc.) has dramatically increased in recent years (Figure 2.1). The major focus of research has been the preparation, characterization, processing, and application of PANI nanofibers (PANI-NFs) and nanotubes (PANI-NTs). PANI-NFs are 1-D PANI nanoobjects of cylindrical profile with diameters ...

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EC-AFM investigation of reversible volume changes with electrode potential in polyaniline

Cited by 43 publications

References 44 publications

Electrodeposition of self-doped copolymers of aniline with aminobenzensulfonic acids on stainless steel. Morphological and electrochemical characterization

Electrodeposition of self-doped copolymers of aniline with aminobenzensulfonic acids on stainless steel. Morphological and electrochemical characterization

Influence of the OPDA additions on impedance response and on anion exchange property of the modified PANI

Polyaniline Nanostructures

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