Synthesis of polyaniline nanofibrils using an in situ seeding technique

Thanpitcha, Tuspon; Sirivat, Anuvat; Jamieson, A. M.; Rujiravanit, Ratana

doi:10.1016/j.synthmet.2008.04.027

Cited by 32 publications

(18 citation statements)

References 59 publications

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“…In the recent years, several techniques for synthesizing PANI nanostructures have been developed including template synthesis, 26 template-free synthesis, 27 seeding polymerization, 28,29 interfacial polymerization, [30][31][32] rapid mixing polymerization, 33 electrospinning, 34 and electrochemical polymerization. 35,36 Template method introduces ''structural directors'' in the polymerization bath that dictates the PANI nanostructures morphology.…”

Section: Introductionmentioning

confidence: 99%

Synthesis of dendritic polyaniline nanofibers by using soft template of sodium alginate

Bhowmick

Bain

Maity

et al. 2011

J of Applied Polymer Sci

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Highly crystallized polyaniline (PANI) nanofibers were synthesized by oxidative polymerization of aniline in the presence of sodium alginate as a soft template in HCl and ammonium peroxydisulfate (APS) acting as an oxidizing agent. Sodium alginate, in presence of a protonic acid like HCl, formed hydrogen bonds with anilium ions or oligomers. The formed hydrogen bonds provide the driving force to form PANI nanofibers. The nanofibers were separated from the alginate gel by degelling with ammonium hydroxide and during degelling emeraldine salt was converted into emeraldine base form. The polymerized PANI was characterized using ultraviolet (UV)-visible spectroscopy, Fourier transform infrared spectroscopy (FTIR), X-ray diffraction (XRD), and scanning electron microscopy (SEM). UV and FTIR spectra showed that the presence of sodium alginate had no effect on the electronic state and backbone structures of the resulting PANI products. It was evident from the XRD analysis that the obtained PANI nanofibers exhibit higher crystalline order. SEM micrographs showed that PANI nanofibers were just like a mat of interwoven twisted nanofibers. After magnification of the SEM image, it was found that most of the nanofibers were interconnected to form ramose structures rather than isolated nanofibers.

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Section: Introductionmentioning

confidence: 99%

Synthesis of dendritic polyaniline nanofibers by using soft template of sodium alginate

Bhowmick

Bain

Maity

et al. 2011

J of Applied Polymer Sci

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“…A variety of synthetic approaches, which include interfacial polymerization, [2] seeding polymerization, [3] oligomer-assisted polymerization, [4] rapidly mixed reaction, [5] dilute polymerization, [6] and use of porous templates and structuraldirecting molecules (e.g., surfactants and specific dopant), [7] have been developed for the synthesis of 1D PANI nanostructures. The template-free method proposed by Wan et al [8,9] has been widely used to synthesize nanofibers, and nanotubes of conducting PANI.…”

Section: Introductionmentioning

confidence: 99%

Polyaniline Microtubes with a Hexagonal Cross‐Section and pH‐Sensitive Fluorescence Properties

Liu

Zhu

Wang

et al. 2010

Macromol. Rapid Commun.

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Polyaniline (PANI) microtubes with a hexagonal cross-section are successfully synthesized by a self-assembly process in the presence of 8-hydroxyquinoline-5-sulfonic acid (HQS) as a dopant and FeCl(3) as an oxidant. The wall thickness of the PANI/HQS microtubes can be adjusted by the content of the oxidant. It is proposed that the aniline/HQS salts serve as a hard template for the formation of the hexagonal-cross-section microtubes. Moreover, PANI/HQS microtubes combined with ZnSO(4) show pH-dependent fluorescence. PANI hexagonal-cross-section microtubes combined with a pH-sensitive fluorescence may promise potential applications in fields such as chemical sensors and confined reaction vessels.

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“…The vibrational bands observed for PANI and its base are reasonably explained on the basis of the normal modes of PANI. For the undoped PANI, the broad band at 3370-2480 cm À1 corresponds to the N-H stretching vibrations of -C 6 H 4 NHC 6 H 4 -groups and the 1585 and 1504 cm À1 bands are assigned to benzene and or quinone ring deformations, the 1294 cm À1 band corresponds to the C-N stretching vibration of a secondary aromatic amine, and the 817 cm À1 band is designated to an aromatic C-H out-of-plane bending, showing the polymerization of aniline in head-tail form [3].…”

Section: Solubility Analysismentioning

confidence: 99%

“…Among various conductive polymers, polyaniline (PANI) has received most interest because of its facile synthesis, good environmental stability, ease of conductivity control by changing the oxidation and protonation states, and the low cost of the monomer [3]. Particularly, one-dimensional nanostructured PANI combines the advantages of organic conductors with lowdimensional systems and thus creates interesting physicochemical properties [4].…”

Section: Introductionmentioning

confidence: 99%

Soluble polyaniline nanofibers prepared via surfactant-free emulsion polymerization

Wang

Chen

et al. 2014

Synthetic Metals

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Synthesis of polyaniline nanofibrils using an in situ seeding technique

Cited by 32 publications

References 59 publications

Synthesis of dendritic polyaniline nanofibers by using soft template of sodium alginate

Synthesis of dendritic polyaniline nanofibers by using soft template of sodium alginate

Polyaniline Microtubes with a Hexagonal Cross‐Section and pH‐Sensitive Fluorescence Properties

Soluble polyaniline nanofibers prepared via surfactant-free emulsion polymerization

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