Enzymatically Synthesized Conducting Polyaniline Nanocomposites: A Solid‐State NMR Study

Thiyagarajan, Muthiah; Kumar, Jayant; Samuelson, Lynne A.; Cholli, Ashok L.

doi:10.1081/ma-120025314

Cited by 13 publications

(10 citation statements)

References 15 publications

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“…124 ppm are assigned to protonated benzenoid carbon (C-2,3). The resonance at 128 ppm could be attributed to protonated quinoid carbons C-8 [49]. This peak was also partly attributed to the presence of bipolarons i.e.…”

Section: Solid-state Nmr Spectroscopymentioning

confidence: 80%

Self-assembly of nanostructures obtained in a microwave-assisted oxidative polymerization of aniline

Gizdavic‐Nikolaidis¹,

Jevremovic²,

Allison³

et al. 2014

Express Polym. Lett.

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Section: Solid-state Nmr Spectroscopymentioning

confidence: 80%

Self-assembly of nanostructures obtained in a microwave-assisted oxidative polymerization of aniline

Gizdavic‐Nikolaidis¹,

Jevremovic²,

Allison³

et al. 2014

Express Polym. Lett.

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“…The spectrum of the doped PANI sample is relatively broad in comparison with its dedoped form, revealing heterogeneity in the sample and significant charge distribution, i.e., the local variations in charge density along the polymer backbone. [25,[44][45][46] Typical PANI peaks are seen at 163.4 ppm assigned to imine quinoid carbon (C-7 in Scheme 1). However, this is shifted 3-6 ppm downfield compared to the peak obtained from a standard PANI sample, [25,44] which could be due to distortion of the structure by possible hydrogen bonds.…”

Section: Resultsmentioning

confidence: 99%

“…The peak at 139.5 ppm is most probably due to carbons C-4 and C-5. Thiyagarajan et al [46] reported a solid-state NMR study of enzymatically synthesized conducting PANI nanocomposites where the peak at 128.4 ppm was assigned to the protonated quinoid carbon (C-8). This peak is for chemically synthesized PANI at %136 ppm.…”

Section: Resultsmentioning

confidence: 99%

Characterization of Polyaniline Nanotubes Formed in the Presence of Amino Acids

Zhang

Peng

Žujović

et al. 2007

Macro Chemistry & Physics

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Self‐assembled nanotubular structures of polyaniline were chemically synthesized from solutions containing different amino acids with the addition of ammonium persulfate as the oxidant. The materials were characterized by SEM and a range of spectroscopic methods. Spectroscopic characterizations revealed that the synthesized materials had many features typical of chemically synthesized PANI. Some additional features were also found and have been ascribed to non‐conducting material formed in the initial stages of the reaction at a higher solution pH. However, UV‐vis and 13C NMR spectra point toward a conductive material as the final product of the reaction. Cyclic voltammetry results also indicate an electroactive final product that closely resembles regular PANI in its electrochemical characteristics.magnified image

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“…The structural characterization of NC was made by solid state 13 C cross-polarization with magic angle spinning NMR techniques. The structural features of PANI in the conducting form of synthesized NC were similar to chemically synthesized PANI[79]. Three methods were developed for the synthesis of DNA-templated PANI nanowires and networks.…”

mentioning

confidence: 97%

An overview on the green synthesis of nanoparticles and other nano-materials using enzymes and their potential applications

2019

Biointerface Res Appl Chem

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The applications of nanoparticles (NPs) and another nanomaterial (NM) are widely increasing in various fields including biomedical and clinical sciences. Conventional methods used for the synthesis of NM have several demerits like chemical procedures producing toxic materials and physical methods being costly and forming particles of non-uniform sizes. The use of such NM has prevented their applications in biomedical fields especially in clinical applications. In order to use NPs in clinical fields, there is a need to use reliable, nontoxic and eco-friendly methods for their synthesis. The use of eco-friendly and biological methods for the synthesis of NPs and other NM has attracted the attention of nanobiotechnologists due to synthesis of such particles by using nontoxic method. The enzymatic synthesis of NPs is highly specific as this procedure results in the formation of nontoxic materials of controlled shape, size and high stability. In this chapter an effort has been made to critically review recent developments in the area of biosynthesis of several types of NM by using enzymes of diverse groups such as oxidoreductases, transferases, hydrolases, lyases and ligases. The mechanisms of enzyme catalyzedsynthesis of NPs and the reaction conditions to control their shape, size, and stability of NPs have also been described. Numerous kinds of techniques employed for the identification and characterization of NM have been discussed. The biomedical and other applications of as-synthesized NM have also been mentioned in this article.

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Enzymatically Synthesized Conducting Polyaniline Nanocomposites: A Solid‐State NMR Study

Cited by 13 publications

References 15 publications

Self-assembly of nanostructures obtained in a microwave-assisted oxidative polymerization of aniline

Self-assembly of nanostructures obtained in a microwave-assisted oxidative polymerization of aniline

Characterization of Polyaniline Nanotubes Formed in the Presence of Amino Acids

An overview on the green synthesis of nanoparticles and other nano-materials using enzymes and their potential applications

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