Cationic dyes as morphology-guiding agents for one-dimensional polypyrrole with improved conductivity

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61389013%3A_____%2F19%3A00504640" target="_blank" >RIV/61389013:_____/19:00504640 - isvavai.cz</a>

Alternative codes found

RIV/00216208:11310/19:10416731 RIV/00216208:11320/19:10416731

Result on the web

<a href="https://www.sciencedirect.com/science/article/pii/S003238611930360X?via%3Dihub" target="_blank" >https://www.sciencedirect.com/science/article/pii/S003238611930360X?via%3Dihub</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.polymer.2019.04.045" target="_blank" >10.1016/j.polymer.2019.04.045</a>

Result language

angličtina

Original language name

Cationic dyes as morphology-guiding agents for one-dimensional polypyrrole with improved conductivity

Original language description

Polypyrrole was prepared in the presence of cationic dyes, safranin and phenosafranin. The safranin supported the one-dimensional growth of polypyrrole, converting globules to nanorods and later also to nanotubes, particularly at higher dye concentrations. In the case of phenosafranin, the produced nanotubes were considerably thicker and were always accompanied by globules. Upon oxidation both dyes are expected to generate insoluble oligomeric templates that serve as loci for the deposition of polypyrrole. The formation of globular morphology takes place when the dye becomes depleted, due to its low concentration for safranin, or because of robust templates produced by phenosafranin. In addition to scanning and transmission electron microscopies, the resultant polypyrroles were characterized by FTIR and Raman spectroscopies, and DC conductivity measurements. The conversion of globular morphology to nanotubes/nanofibers was accompanied by the increase in conductivity from 5 to 35 S cm−1, which was explained by the improved ordering of polypyrrole chains more preferable for charge transport. The series of syntheses at varying oxidant-to-pyrrole mole ratios confirmed the stoichiometric ratio 2.5 to be the best for pyrrole oxidation but a good stability of polypyrrole was demonstrated even at extremely high stoichiometric ratio 15.

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

—

OECD FORD branch

20505 - Composites (including laminates, reinforced plastics, cermets, combined natural and synthetic fibre fabrics; filled composites)

Project

<a href="/en/project/GA18-04669S" target="_blank" >GA18-04669S: Nanostructured conducting polymer composites</a><br>

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2019

Confidentiality

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

Name of the periodical

Polymer

ISSN

0032-3861

e-ISSN

—

Volume of the periodical

174

Issue of the periodical within the volume

12 June

Country of publishing house

GB - UNITED KINGDOM

Number of pages

7

Pages from-to

11-17

UT code for WoS article

000469028200002

EID of the result in the Scopus database

2-s2.0-85064980820