Počet záznamů: 1

Spectroscopic study of the highly homogeneous polyaniline film formation on gold support

SYSNO ASEP	0446127
Druh ASEP	J - Článek v odborném periodiku
Zařazení RIV	J - Článek v odborném periodiku
Poddruh J	Článek ve WOS
Název	Spectroscopic study of the highly homogeneous polyaniline film formation on gold support
Tvůrce(i)	Morávková, Zuzana (UMCH-V)_{RID, ORCID} Stejskal, Jaroslav (UMCH-V)_{RID, ORCID, SAI} Trchová, Miroslava (UMCH-V)_{RID, ORCID}
Zdroj.dok.	Spectrochimica Acta Part A-Molecular and Biomolecular Spectroscopy. - : Elsevier - ISSN 1386-1425 Roč. 152, 5 January (2016), s. 294-303
Poč.str.	10 s.
Jazyk dok.	eng - angličtina
Země vyd.	NL - Nizozemsko
Klíč. slova	polyaniline ; thin film ; infrared spectroscopy
Vědní obor RIV	CD - Makromolekulární chemie
CEP	GAP205/12/0911 GA ČR - Grantová agentura ČR
Institucionální podpora	UMCH-V - RVO:61389013
UT WOS	000365367100036
EID SCOPUS	84938409467
DOI	10.1016/j.saa.2015.07.075
Anotace	The oxidation of aniline with ammonium peroxydisulfate in the aqueous solution of acetic acid has two subsequent phases: the oxidation of the neutral aniline molecules at low acidity, which was followed by the oxidation of the anilinium cations after the acidity became higher. The final polyaniline film deposited on immersed surfaces is usually contaminated with semi-crystalline oligomers which precipitated during induction period from the reaction medium. To obtain a homogeneous film, which is important in the fabrication of many molecular electronic devices, we have studied the course of aniline oxidation in a view of new experimental evidence. In the unique series of experiments, the silicon or gold supports have been immersed in the reaction mixture at crucial stages of oxidation reaction, and the deposits at the end of the reaction were analyzed. The growth of a highly homogenous film on the gold-coated glass substrate immersed in the reaction mixture at the end of the polymerization period has been observed. The molecular structure of the products was monitored with UV–visible, infrared, and Raman spectroscopies. The possible mechanism of the film formation and the molecular mechanism of the surface interaction of chemisorbed aniline oligomers with gold support are proposed.
Pracoviště	Ústav makromolekulární chemie
Kontakt	Eva Čechová, cechova@imc.cas.cz ; Tel.: 296 809 358
Rok sběru	2016

Počet záznamů: 1