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New coumarin-based disperse disazo dyes: Synthesis, spectroscopic properties and theoretical calculations

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dc.contributor.author Yıldırım, Fati
dc.contributor.author Demirçalı, Aykut
dc.contributor.author Karcı, Fikret
dc.contributor.author Bayrakdar, Alparslan
dc.contributor.author Taşlı, Pınar Tunay
dc.contributor.author Kart, Hasan Hüseyin
dc.date.accessioned 2019-08-16T13:00:20Z
dc.date.available 2019-08-16T13:00:20Z
dc.date.issued 2016
dc.identifier.issn 01677322 (ISSN)
dc.identifier.uri http://acikerisim.pau.edu.tr:8080/xmlui/handle/11499/9374
dc.description.abstract 5-Amino-4-arylazo-3-methyl-1H-pyrazoles (3a-l) have been diazotised and coupled with 4-hydroxycoumarin to give rise to the coumarin-based disperse disazo dyes (3a-l). The newly synthesized twelve coumarin-based disperse disazo dyes have been characterized by using the elemental analysis and the spectral methods. The solvatochromic behavior of these dyes in various solvents is evaluated. Substituent, acid and base effects on the visible absorption spectra of the dyes substituted with electron-withdrawing and electron-donating groups at their o-, m-, p-position are also reported in detail. Molecular geometries and spectroscopic properties of the compounds considered in this work are also analyzed by using ab initio calculation methods based on the density functional theory (DFT) in the ground state. The theoretical results obtained from DFT are compatible with the experimental results. © 2016 Elsevier B.V.
dc.language.iso English
dc.publisher Elsevier
dc.relation.isversionof 10.1016/j.molliq.2016.08.008
dc.rights info:eu-repo/semantics/closedAccess
dc.subject Coumarin
dc.subject DFT
dc.subject Disazo dyes
dc.subject Disperse dyes
dc.subject Pyrazole
dc.subject Solvatochromism
dc.subject Azo dyes
dc.subject Calculations
dc.subject Ground state
dc.subject Dis-azo dyes
dc.subject Pyrazoles
dc.subject Solvatochromisms
dc.subject Density functional theory
dc.title New coumarin-based disperse disazo dyes: Synthesis, spectroscopic properties and theoretical calculations
dc.type Article
dc.relation.journal Journal of Molecular Liquids
dc.contributor.authorID 0000-0002-9286-5823
dc.identifier.volume 223
dc.identifier.startpage 557
dc.identifier.endpage 565
dc.relation.publicationCategory Uluslararası Hakemli Dergi
dc.identifier.index Scopus
dc.identifier.index WOS

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