Structure and spectal properties of cinnamoyl pyrones and their vinylogs

• Autorzy: Dmytro Tykhanov , Irina Serikova , Fedor Yaremenko , Alexander Roshal
• Języki publikacji: EN

Abstrakty

EN

The 1H-NMR and quantum chemical analysis of the stability of tautomers of cinnamoyl pyrone derivatives and vinylogs has been studied. The relationship between the structure of the most stable tautomer and its spectral properties has been investigated. It has been determined that the tautomer of highest stability (88–100 molar %) has an α-pyrone structure and exhibits a trans-conformation in the cinnamoyl fragment. An intense fluorescence of dyes has been observed in non-polar solvents with cinnamoyl fragments having electron-donating substituents or several double bonds in the polymethine chain. A gradient in solvent polarity resulted in fluorescence quenching which permits the use of the dyes as intensometric fluorometric probes for medium polarity examination. [...]

Słowa kluczowe

EN

Cinnamoyl pyrones; Fluorescent dyes; Quantum chemical calculations; Absorption and fluorescence spectral properties; Fluorescent probes

• Czasopismo: Open Chemistry
• Rocznik: 2010
• Tom: 8
• Numer: 2
• Strony: 347-355

Daty

wydano

2010-04-01

online

2010-03-23

Twórcy

autor

Dmytro Tykhanov

• Department of Physical Organic Chemistry, Institute of Chemistry at Kharkov National University, Kharkov, 61077, Ukraine

autor

Irina Serikova

• Danilevskii Institute of Endocrine Pathology Problems, Ukrainian Academy of Medical Sciences, Kharkov, 61002, Ukraine

autor

Fedor Yaremenko

• Danilevskii Institute of Endocrine Pathology Problems, Ukrainian Academy of Medical Sciences, Kharkov, 61002, Ukraine

autor

Alexander Roshal

• Department of Physical Organic Chemistry, Institute of Chemistry at Kharkov National University, Kharkov, 61077, Ukraine,

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Identyfikatory

DOI

10.2478/s11532-009-0138-4