About: Stability and structural aspects of diketopyrrolopyrrole pigment and its N-alkyl derivatives

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rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
Description	An unsubstituted sample, three symmetrically N-substituted samples (methyl, butyl and heptyl) and two asymmetrically N-substituted samples (butyl and heptyl) of 3,6-diphenyl-2,5-dihydro-pyrrolo[3,4-c] pyrrole-1,4-dione (DPP) were investigated using thermogravimetry and differential scanning calorimetry to reveal the influence on physical-chemical properties of different alkyl chains and symmetry of Nsubstitution. Stability tests revealed that in all cases the substitution brought significant destabilization of the structure in comparison with the unsubstituted DPP molecule. It was demonstrated that the length of the substituting alkyl chain is a crucial factor in the stability of N-alkyl derivatives; the shorter the alkyl chain was, the less stable was the derivative. Further, the symmetrical derivates were less stable than the asymmetrical ones. Unlike the unsubstituted DPP molecule, all the derivatives showed remarkable sensitivity to different cooling regimes which lead to the revealing of monotrop An unsubstituted sample, three symmetrically N-substituted samples (methyl, butyl and heptyl) and two asymmetrically N-substituted samples (butyl and heptyl) of 3,6-diphenyl-2,5-dihydro-pyrrolo[3,4-c] pyrrole-1,4-dione (DPP) were investigated using thermogravimetry and differential scanning calorimetry to reveal the influence on physical-chemical properties of different alkyl chains and symmetry of Nsubstitution. Stability tests revealed that in all cases the substitution brought significant destabilization of the structure in comparison with the unsubstituted DPP molecule. It was demonstrated that the length of the substituting alkyl chain is a crucial factor in the stability of N-alkyl derivatives; the shorter the alkyl chain was, the less stable was the derivative. Further, the symmetrical derivates were less stable than the asymmetrical ones. Unlike the unsubstituted DPP molecule, all the derivatives showed remarkable sensitivity to different cooling regimes which lead to the revealing of monotrop (en)
Title	Stability and structural aspects of diketopyrrolopyrrole pigment and its N-alkyl derivatives Stability and structural aspects of diketopyrrolopyrrole pigment and its N-alkyl derivatives (en)
skos:prefLabel	Stability and structural aspects of diketopyrrolopyrrole pigment and its N-alkyl derivatives Stability and structural aspects of diketopyrrolopyrrole pigment and its N-alkyl derivatives (en)
skos:notation	RIV/00216305:26310/11:PU89373!RIV11-MSM-26310___
http://linked.open...avai/riv/aktivita	P S Z
http://linked.open...avai/riv/aktivity	P(KAN401770651), S, Z(MSM0021630501)
http://linked.open...iv/cisloPeriodika	1
http://linked.open...vai/riv/dodaniDat	2011
http://linked.open...aciTvurceVysledku	Kučerík, Jiří Weiter, Martin Vala, Martin David, Jan
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	Vysoké učení technické v Brně / Fakulta chemická
http://linked.open...dnocenehoVysledku	231843
http://linked.open...ai/riv/idVysledku	RIV/00216305:26310/11:PU89373
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	Diphenyl-diketo-pyrrolo-pyrroles (DPPs), Pigments, Organic electronics, Thermal stability, Thermogravimetry, Calorimetry (en)
http://linked.open.../riv/klicoveSlovo	Diphenyl-diketo-pyrrolo-pyrroles (DPPs) Pigments Thermal stability Thermogravimetry Organic electronics Calorimetry
http://linked.open...odStatuVydavatele	GB - Spojené království Velké Británie a Severního Irska
http://linked.open...ontrolniKodProRIV	[49967A435839]
http://linked.open...i/riv/nazevZdroje	DYES AND PIGMENTS
http://linked.open...in/vavai/riv/obor	CF
http://linked.open...ichTvurcuVysledku	4 (xsd:int)
http://linked.open...cetTvurcuVysledku	5 (xsd:int)
http://linked.open...vavai/riv/projekt	Molecular nanosystems and nanodevices: electric transport properties
http://linked.open...UplatneniVysledku	2011
http://linked.open...v/svazekPeriodika	89
http://linked.open...iv/tvurceVysledku	Kučerík, Jiří Vala, Martin Vyňuchal, Jan Weiter, Martin David, Jan
http://linked.open...n/vavai/riv/zamer	Multifunkční heterogenní materiály na bázi syntetických polymerů a biopolymerů
issn	0143-7208
number of pages	8 (xsd:int)
http://localhost/t...ganizacniJednotka	26310

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