Core/shell, protuberance-free multiwalled carbon nanotube/polyaniline nanocomposites via interfacial chemistry of aryl diazonium salts

Mekki, Ahmed; Samanta, Soumen; Singh, Ajay; Salmi, Zakaria; Mahmoud, Rachid; Chehimi, Mohamed M.; Aswal, D. K.

doi:10.1016/j.jcis.2013.11.077

Cited by 47 publications

(30 citation statements)

References 75 publications

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“…The results suggest that the same synthetic protocol in both cases leads to a certain degree of covalent modification, whilst a proportion of the modifying groups remains adsorbed to the carbon nanostructures. Mekki et al [90] successfully obtained a lump free core-shell carbon nanotubes/polyaniline nano-composites by surface modification of CNTs with Paminodiphenylamine which acted as a template for directional polymerization with the aim to obtain an ordered structure (Fig. 5).…”

Section: B With In Situ Generated Aryldiazonium Saltsmentioning

confidence: 99%

Functionalization of nanomaterials with aryldiazonium salts

Mohamed

Salmi

Dahoumane

et al. 2015

Advances in Colloid and Interface Science

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Section: B With In Situ Generated Aryldiazonium Saltsmentioning

confidence: 99%

Functionalization of nanomaterials with aryldiazonium salts

Mohamed

Salmi

Dahoumane

et al. 2015

Advances in Colloid and Interface Science

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166

137

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“…This process is commonly known as the solvent‐free diazonium reaction. In this methodology, the diazonium salts are in situ generated from a reaction between amines and nitrosonium ions; additionally, these ions can be substituted by NaNO 2 and H + source (such as sulfuric, acetic, hydrochloric, or hypochloric acid) . The aryl layers resulting from the reduction of diazonium salts have been widely employed for the coupling of molecules, macromolecules, polymers, nanoparticles, and nanotubes for different applications .…”

Section: Introductionmentioning

confidence: 99%

Polyaniline‐Wrapped ZnO Nanorod Composite Films on Diazonium‐Modified Flexible Plastic Substrates

Mekki

Ait-Touchente

Samanta

et al. 2016

Macro Chemistry & Physics

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Vertically aligned core/shell‐like polyaniline‐wrapped ZnO nanorod composite films are prepared on diazonium‐modified biaxially oriented polyethylene terephthalate (BOPET) sheets, in two main steps. (i) The BOPET substrate is modified by grafting of 4‐aminobenzenoic groups from the in situ generated diazonium compound; (ii) ZnO nanorod/polyaniline composite film is grown on the substrates by wet chemical route followed by the preparation of polyaniline (PANI) by in situ chemical oxidative polymerization of aniline on the immobilized ZnO nanorods. Scanning electron microscopy images reveal the vertical growth and homogeneous distribution of the ZnO nanorods and their nanocomposites on the diazonium modified substrates. In contrast, the ZnO and PANI‐coated ZnO nanorods are randomly distributed on pristine BOPET. X‐ray photoelectron spectra permit to characterize the chemical nature of the aryl and the nanocomposite adlayers. X‐ray diffraction analysis results indicate that ZnO nanorods retain their wurtzite structure within the nanocomposite coating. Fourier‐transform infrared (FTIR) and Raman indicate the presence of interaction between ZnO nanorods and PANI chains. The ZnO/PANI‐coated diazonium‐modified BOPET sheets exhibit excellent mechanical flexibility with electroconductive characteristics even in the highly bent state. This work highlights the efficiency of the interfacial chemistry of aryl diazonium salts in the preparation of nanocomposite films with outstanding morphology, adhesion, and physical properties even under mechanical stress.

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“…The spectra of PANi displays the bands at about 1561 and 1463 cm -1 corresponding to C-C stretching of quinoid and benzenoid rings vibrations, respectively, which specifies the oxidation state of ES. As generally observed for pure PANi (ES), the benzenoid band at 1463 cm -1 is stronger peak as that of the quinoid band at 1561 cm -1 [12,16]. The strong characteristic band emerged at 1144 cm -1 was described by MacDiarmid as the ''electron-like band'' and is considered to be a measure of the delocalization of the electrons and, therefore, is revealing the conductivity of PANi [11,17].…”

Section: Low Temperature Polymerization Procedures Of Pani and Pani/mwcntmentioning

confidence: 58%

“…Jeevananda et al [11] fabricated one-dimensional nanocomposites by coating MWCNT with PANi using anionic surfactant. Mekki et al [12] reported synthesis of MWCNT/PANi nanocomposites with core-shell structure using interfacial chemistry of aryl diazonium salts. Liao et al [13] fabricated Carbon Nanotube/PANi Composite Nanofibers using dialyze system.…”

Section: Introductionmentioning

confidence: 99%

Facile route for multi-walled carbon nanotube coating with polyaniline: tubular morphology nanocomposites for supercapacitor applications

Imani

Farzi

2015

J Mater Sci: Mater Electron

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A new approach involving low-temperature system has been developed for the polyaniline/multi-walled carbon nanotubes (PANi/MWCNT) composite in which MWCNT are coated with a layer of PANi in a complete tubular morphology. The MWCNT content varied from 0 to 10 %. The effect of MWCNT content on the thickness of PANi layer was studied. SEM technique was used to investigate the morphology and changes in the dimension of nanotubes. The interaction between PANi and MWCNT considering the nature of chain growth has been explained according to the results of FT-IR analysis. The improvement of thermal stability and crystallinity of the nanocomposites has been evaluated by using TGA and XRD, respectively. The results show the thickness of PANi coating on the surface of MWCNT was depended on the MWCNT content. These nanocomposites have been used for supercapacitor electrodes. The galvanostatic chargedischarge measurements indicated that the PANi/MWCNT composites had greater specific capacitances than pure PANi.

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Core/shell, protuberance-free multiwalled carbon nanotube/polyaniline nanocomposites via interfacial chemistry of aryl diazonium salts

Cited by 47 publications

References 75 publications

Functionalization of nanomaterials with aryldiazonium salts

Functionalization of nanomaterials with aryldiazonium salts

Polyaniline‐Wrapped ZnO Nanorod Composite Films on Diazonium‐Modified Flexible Plastic Substrates

Facile route for multi-walled carbon nanotube coating with polyaniline: tubular morphology nanocomposites for supercapacitor applications

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