Conjugated polyaniline as a result of the benzidine rearrangement

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61389013%3A_____%2F15%3A00442229" target="_blank" >RIV/61389013:_____/15:00442229 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1002/pi.4869" target="_blank" >http://dx.doi.org/10.1002/pi.4869</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1002/pi.4869" target="_blank" >10.1002/pi.4869</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Conjugated polyaniline as a result of the benzidine rearrangement

Popis výsledku v původním jazyce

The mechanism of the oxidative polymerization of aniline is reviewed on the basis of the experimental evidence and reaction schemes proposed in the literature. It is demonstrated that the balance between the non-protonated and protonated forms of the monomer and the growing chain is responsible for the diversity of the molecular structure, morphology and properties of aniline oxidation products. Various forms are oxidized by two oxidation mechanisms: (1) chain reaction of electrophilic substitution and(2) coupling of cation-radical centres. At pH > 2.5, the non-protonated reagents are oxidized with a chain reaction controlled by electrophilic substitution of the aromatic ring. The reaction leads to the formation of non-conducting aniline oligomers with heterogeneous molecular structures. At pH = 2.5?4, the electrophilic substitution is reduced because of the protonation of the aniline, and the cyclic dimer, phenazine, becomes the main product of the oxidation. The growth of the conjug

Název v anglickém jazyce

Conjugated polyaniline as a result of the benzidine rearrangement

Popis výsledku anglicky

The mechanism of the oxidative polymerization of aniline is reviewed on the basis of the experimental evidence and reaction schemes proposed in the literature. It is demonstrated that the balance between the non-protonated and protonated forms of the monomer and the growing chain is responsible for the diversity of the molecular structure, morphology and properties of aniline oxidation products. Various forms are oxidized by two oxidation mechanisms: (1) chain reaction of electrophilic substitution and(2) coupling of cation-radical centres. At pH > 2.5, the non-protonated reagents are oxidized with a chain reaction controlled by electrophilic substitution of the aromatic ring. The reaction leads to the formation of non-conducting aniline oligomers with heterogeneous molecular structures. At pH = 2.5?4, the electrophilic substitution is reduced because of the protonation of the aniline, and the cyclic dimer, phenazine, becomes the main product of the oxidation. The growth of the conjug

Druh

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

CEP obor

CD - Makromolekulární chemie

OECD FORD obor

—

Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

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

4

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

13

Strana od-do

453-465

Kód UT WoS článku

000351209200001

EID výsledku v databázi Scopus

2-s2.0-84924719467