Optimization routes for high electrical conductivity of polypyrrole nanotubes prepared in presence of methyl orange

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61389013%3A_____%2F17%3A00475340" target="_blank" >RIV/61389013:_____/17:00475340 - isvavai.cz</a>

Alternative codes found

RIV/00216208:11320/17:10370889 RIV/60461373:22340/17:43913571

Result on the web

<a href="http://dx.doi.org/10.1016/j.synthmet.2017.06.004" target="_blank" >http://dx.doi.org/10.1016/j.synthmet.2017.06.004</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.synthmet.2017.06.004" target="_blank" >10.1016/j.synthmet.2017.06.004</a>

Result language

angličtina

Original language name

Optimization routes for high electrical conductivity of polypyrrole nanotubes prepared in presence of methyl orange

Original language description

The synthesis of polypyrrole nanotubes using methyl orange as a structure guiding agent is a popular method for obtaining electrically conductive material of nanostructured morphology. This work presents certain route of chemical synthesis, where the experimental conditions were optimized in order to obtain a material with high conductivity (up to 91.6 S cm-1) and specific surface area (up to 67.6 m2 g-1) via modification of two parameters: a) the methyl orange concentration (from 0.5 mM to 25 mM) and b) the polymerization temperature (from -5 °C to 35 °C). The synthesized material was then characterized by scanning electron microscopy, energy X-ray dispersive spectroscopy, nitrogen physisorption, Fourier-transform infrared and Raman spectroscopies and measurement of electrical conductivity. It was found, that the concentration of methyl orange in polymerization solution strongly influences both the diameter (ranging from 60 to 900 nm) and the shape (circular or rectangular cross-section) of synthesized polypyrrole nanotubes. Moreover, while at low concentrations of methyl orange in the native liquor the resulting nanotubes are accompanied by globular form of polypyrrole, at higher concentrations the composite of polypyrrole nanotubes with acidic form of methyl orange is produced. The detailed mechanism of methyl orange role during the polymerization process was explained in terms of behaviour of planar aromatic sulfonic acids. As for the polymerization temperature, it has stronger influence on the morphology than on the chemical composition of resulting polypyrrole nanotubes. Finally, we report a universal relation - a power law describing dependency of electrical conductivity on nanotube diameter for this class of materials.

Czech name

—

Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

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OECD FORD branch

10404 - Polymer science

Project

Result was created during the realization of more than one project. More information in the Projects tab.

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year

2017

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Synthetic Metals

ISSN

0379-6779

e-ISSN

—

Volume of the periodical

230

Issue of the periodical within the volume

August

Country of publishing house

CH - SWITZERLAND

Number of pages

8

Pages from-to

89-96

UT code for WoS article

000405766200012

EID of the result in the Scopus database

2-s2.0-85020787973