About: Transformation of oligoaniline microspheres to platelike nitrogen-containing carbon

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rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
Description	Aniline oligomers are important in relation to one of the most important conducting polymers, polyaniline. In the present study, aniline oligomer microspheres have been prepared during oxidation of aniline with ammonium peroxydisulfate under alkaline conditions in 0.2 or 1.0 M ammonium hydroxide. They were subsequently converted to disordered nitrogen-containing carbons during heating to 650 °C in an inert atmosphere. Raman spectra confirm the transformation of the aniline oligomers into a material displaying two peaks assigned to graphitic and disordered modes. In contrast to polyaniline, which retains its morphology after carbonization, the microspherical morphology of aniline oligomers was completely destroyed and replaced by two-dimensional plates. The evolution of the new morphology was followed by scanning electron and optical microscopies, and the corresponding changes in molecular structure after heating are discussed on the basis of Fourier transform infrared and Raman spectroscopies. The process of carbonization was followed by thermogravimetric analysis. The degree of crystallinity observed by wide-angle X-ray scattering was reduced after the carbonization. Aniline oligomers are important in relation to one of the most important conducting polymers, polyaniline. In the present study, aniline oligomer microspheres have been prepared during oxidation of aniline with ammonium peroxydisulfate under alkaline conditions in 0.2 or 1.0 M ammonium hydroxide. They were subsequently converted to disordered nitrogen-containing carbons during heating to 650 °C in an inert atmosphere. Raman spectra confirm the transformation of the aniline oligomers into a material displaying two peaks assigned to graphitic and disordered modes. In contrast to polyaniline, which retains its morphology after carbonization, the microspherical morphology of aniline oligomers was completely destroyed and replaced by two-dimensional plates. The evolution of the new morphology was followed by scanning electron and optical microscopies, and the corresponding changes in molecular structure after heating are discussed on the basis of Fourier transform infrared and Raman spectroscopies. The process of carbonization was followed by thermogravimetric analysis. The degree of crystallinity observed by wide-angle X-ray scattering was reduced after the carbonization. (en)
Title	Transformation of oligoaniline microspheres to platelike nitrogen-containing carbon Transformation of oligoaniline microspheres to platelike nitrogen-containing carbon (en)
skos:prefLabel	Transformation of oligoaniline microspheres to platelike nitrogen-containing carbon Transformation of oligoaniline microspheres to platelike nitrogen-containing carbon (en)
skos:notation	RIV/61389013:_____/13:00389210!RIV13-AV0-61389013
http://linked.open...avai/predkladatel	Ústav makromolekulární chemie AV ČR, v. v. i.
http://linked.open...avai/riv/aktivita	I P Z
http://linked.open...avai/riv/aktivity	I, P(GAP205/12/0911), P(GPP108/11/P763), Z(AV0Z40500505)
http://linked.open...iv/cisloPeriodika	5
http://linked.open...vai/riv/dodaniDat	2013
http://linked.open...aciTvurceVysledku	Morávková, Zuzana Stejskal, Jaroslav Trchová, Miroslava Zhigunov, Alexander Tomšík, Elena
http://linked.open.../riv/druhVysledku	J - Článek v odborném periodiku
http://linked.open...iv/duvernostUdaju	S - Úplné a pravdivé údaje nepodléhající ochraně podle zvláštních právních předpisů
http://linked.open...titaPredkladatele	Ústav makromolekulární chemie AV ČR, v. v. i.
http://linked.open...dnocenehoVysledku	111581
http://linked.open...ai/riv/idVysledku	RIV/61389013:_____/13:00389210
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	aniline; aniline oligomers; polyaniline (en)
http://linked.open.../riv/klicoveSlovo	aniline polyaniline aniline oligomers
http://linked.open...odStatuVydavatele	US - Spojené státy americké
http://linked.open...ontrolniKodProRIV	[DB292068D091]
http://linked.open...i/riv/nazevZdroje	Journal of Physical Chemistry C
http://linked.open...in/vavai/riv/obor	CD
http://linked.open...ichTvurcuVysledku	5 (xsd:int)
http://linked.open...cetTvurcuVysledku	5 (xsd:int)
http://linked.open...vavai/riv/projekt	Aniline oligomers and their role in the formation of polyaniline nanostructures –spectroscopic analysis Carbonization of polyaniline nanostructures and composites bazed on carbon nanotubes/polyaniline
http://linked.open...UplatneniVysledku	2013
http://linked.open...v/svazekPeriodika	117
http://linked.open...iv/tvurceVysledku	Morávková, Zuzana Stejskal, Jaroslav Trchová, Miroslava Zhigunov, Alexander Tomšík, Elena
http://linked.open...ain/vavai/riv/wos	000314907700036
http://linked.open...n/vavai/riv/zamer	Progresivní makromolekulární materiály a supramolekulární systémy: syntéza a studium vlastností, jevů a možností využití pro speciální aplikace a moderní technologie
issn	1932-7447
number of pages	11 (xsd:int)
http://bibframe.org/vocab/doi	10.1021/jp306783m

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