Self-doping of polyaniline prepared with the FeCl3/H2O2 system and the origin of the Raman band of emeraldine salt at around 1375cm(-1)

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11310%2F15%3A10315450" target="_blank" >RIV/00216208:11310/15:10315450 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/61389013:_____/15:00450088

Výsledek na webu

<a href="http://dx.doi.org/10.1002/pi.4983" target="_blank" >http://dx.doi.org/10.1002/pi.4983</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1002/pi.4983" target="_blank" >10.1002/pi.4983</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Self-doping of polyaniline prepared with the FeCl3/H2O2 system and the origin of the Raman band of emeraldine salt at around 1375cm(-1)

Popis výsledku v původním jazyce

Stepwise addition of H2O2 in small portions into the polymerization mixture reduces the number of defects in polyaniline (PANI) prepared with the Fe3+/H2O2 system, although it does not eliminate them completely. PANIs slightly self-doped with phenolic groups are thus obtained, which show conductivity from 2.65 to 0.38Scm(-1) as the total H2O2/aniline mole ratio is increased from 0.125 to 1.25. The conductivity shows a good correlation with the A(B)/A(900) UV-visible absorbance ratio of the PANI emeraldine salt form (PANI ES), much better than with the A(B)/A(Q) ratio of the corresponding emeraldine base form. This corresponds well with the assignment of the band at 900nm to polaronic transitions. Partial self-doping of PANIs with weakly acidic phenolicgroups allowed evidence to be obtained for the assignment of Raman bands at 1370cm(-1) and 734cm(-1) (for (exc) = 780nm) to vibrational modes of highly localized polarons. The presence of the band at 880cm(-1) in the IR spectra of these

Název v anglickém jazyce

Self-doping of polyaniline prepared with the FeCl3/H2O2 system and the origin of the Raman band of emeraldine salt at around 1375cm(-1)

Popis výsledku anglicky

Stepwise addition of H2O2 in small portions into the polymerization mixture reduces the number of defects in polyaniline (PANI) prepared with the Fe3+/H2O2 system, although it does not eliminate them completely. PANIs slightly self-doped with phenolic groups are thus obtained, which show conductivity from 2.65 to 0.38Scm(-1) as the total H2O2/aniline mole ratio is increased from 0.125 to 1.25. The conductivity shows a good correlation with the A(B)/A(900) UV-visible absorbance ratio of the PANI emeraldine salt form (PANI ES), much better than with the A(B)/A(Q) ratio of the corresponding emeraldine base form. This corresponds well with the assignment of the band at 900nm to polaronic transitions. Partial self-doping of PANIs with weakly acidic phenolicgroups allowed evidence to be obtained for the assignment of Raman bands at 1370cm(-1) and 734cm(-1) (for (exc) = 780nm) to vibrational modes of highly localized polarons. The presence of the band at 880cm(-1) in the IR spectra of these

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

CD - Makromolekulární chemie

OECD FORD obor

—

Projekt

<a href="/cs/project/GAP205%2F12%2F0911" target="_blank" >GAP205/12/0911: Anilinové oligomery a jejich role při tvorbě polyanilinových nanostruktur – spektroskopická analýza</a><br>

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2015

Kód důvěrnosti údajů

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

Název periodika

Polymer International

ISSN

0959-8103

e-ISSN

—

Svazek periodika

64

Číslo periodika v rámci svazku

12

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

7

Strana od-do

1801-1807

Kód UT WoS článku

000363466600018

EID výsledku v databázi Scopus

2-s2.0-84945437327