Growth of highly oriented crystalline polyaniline films by self-organization

Sutar, D.S.; Nimmakayala, Padma; Aswal, D. K.; Deshpande, S. K.; Gupta, S. K.; Yakhmi, J. V.

doi:10.1016/j.jcis.2007.04.051

Cited by 34 publications

(21 citation statements)

References 36 publications

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“…It is speculated that (a) the unique mesoporous features, large pore diameter as well as high oil absorption value of the MS make it propitious to adsorb the pyrrole monomer to the surface and into the pores to form composites; and (b) there was no independent pyrrole monomer drops in the system when the content of F-MS was higher than 30 wt%. This speculation is in agreement with the surface polymerization theory [31][32][33][34].…”

Section: Morphological Analysissupporting

confidence: 90%

Preparation and Characterization of Bayberry-Like Polypyrrole Composites Using Functionalized Mesoporous Silica asIn SituDopant

Zang¹,

Qiu

Yang³

et al. 2015

International Journal of Polymeric Materials and Polymeric Biom

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A series of polypyrrole composites with different content of functionalized mesoporous silica, which functioned as the in situ dopant and inorganic host, were prepared. The morphology, structure, thermal stability, and electrical properties of the samples were characterized by scanning electron microscopy, Fourier transform infrared spectroscopy, X-ray diffraction, thermogravimetric analysis, cyclic voltammetry, and galvanostatic charge-discharge test. The content of functionalized mesoporous silica had strongly impact on the morphology and electrical properties of the samples. When the value was 10 wt%, the sample showed a bayberry-like morphology and possessed the maximum electrical conductivity and specific capacitance of 33.33 S=cm and 237.6 F=g, respectively.

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Section: Morphological Analysissupporting

confidence: 90%

Preparation and Characterization of Bayberry-Like Polypyrrole Composites Using Functionalized Mesoporous Silica asIn SituDopant

Zang¹,

Qiu

Yang³

et al. 2015

International Journal of Polymeric Materials and Polymeric Biom

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“…These peaks indicated that HCl‐doped PANi fibers were in their conducting form (emeraldine form of PANi), which was similar to that obtained by either chemical or electrochemical methods. The emeraldine oxidation state of PANi fibers contained half imine and half amine nitrogens and could be represented by the formula [–C 6 H 4 –NC 6 H 4 N–C 6 H 4 –NH–C 6 H 4 –NH–] n . The imine nitrogens could be completely protonated on exposure to strong acids, leading to protonation of PANi fibers.…”

Section: Resultsmentioning

confidence: 99%

Growth of hexagonal polyaniline fibers with polyacrylamide pendants

et al. 2013

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A new concept of synthesizing hexagonal polyaniline (PANi) fibers with polyacrylamide (PAAm) pendants in PAAm oligomer (oligo‐PAAm) colloid is proposed. The size and morphology of the composite fibers can be controlled by adjusting the synthesis conditions. A possible growth mechanism of the PANi microstructures based on typical PAAm–crystals interactions in a mild aqueous solution is proposed. The amide ligands decorated oligo‐PAAm chains are able to coordinate with –C6H4–NH+C6H4NH+–C6H4–NH–C6H4–NH– sections, leading to a lower surface energy and growth along c‐directions to form fibriform morphology. The fibers have uniform diameter ranging from 200 to 400 μm, and length varying from several millimeters to 6 cm. Fourier transform infrared measurement indicates that the fiber exhibits a main PANi chain with PAAm pendants, and ultraviolet–visible spectra reveal that the PANi is in high conductive emeraldine state. Acrylamide feed significantly affects the morphology, however, the conductivity and yield of the fiber depend on hydrochloric acid and potassium peroxydisulfate concentrations in the preparation process. The hexagonal composite fibers show an electrical conductivity of 2.2 S·cm−1 and yield of higher than 95%. Polymer‐directed crystal growth may provide promising routes to rational synthesis of various ordered organic materials with complex form and structural specialization. POLYM. COMPOS., 35:253–262, 2014. © 2013 Society of Plastics Engineers

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“…2). Generally, PANI and its derivatives are amorphous and exhibit a broad diffraction band around 25 o that corresponds to periodicity parallel to polymer chain [38]. The XRD pattern of P2AT-C is typical of PANI derivative showing the amorphous band around 27° (Fig.…”

Section: Xrdmentioning

confidence: 98%