Structural and optical studies of 7-methoxy-8-(3-metrhylbut-2-enyl)-2-chromenone (osthol), a plant based coumarin

Osthol, [7-Methoxy-8-(3-metrhylbut-2-enyl)-2-chromenone], a simple Coumarin (Mol. Formula=C15H16O3), was isolated from petroleum ether extract of the root parts of the plant Prangos pabularia. The compound was characterized by MS, 1H NMR, 13C NMR, IR, X-ray diffraction (XRD), scanning electron micro...

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Bibliographic Details
Published inOptik (Stuttgart) Vol. 127; no. 5; pp. 2802 - 2805
Main Authors Farozi, Alia, Shah, Shakeel A., Banday, Javid A.
Format Journal Article
LanguageEnglish
Published Elsevier GmbH 01.03.2016
Subjects
Coumarin
Crude oil
Crystals
Diffraction
Ethers
Monoclinic
Nuclear magnetic resonance
Optoelectronic
Osthol
Prangos pabularia
Scanning electron microscopy
Spectroscopy
Monoclinic
Optoelectronic
Prangos pabularia
Osthol
Coumarin
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Summary:Osthol, [7-Methoxy-8-(3-metrhylbut-2-enyl)-2-chromenone], a simple Coumarin (Mol. Formula=C15H16O3), was isolated from petroleum ether extract of the root parts of the plant Prangos pabularia. The compound was characterized by MS, 1H NMR, 13C NMR, IR, X-ray diffraction (XRD), scanning electron microscopy (SEM), UV–vis spectroscopy and photoluminescence (PL) measurements. Structural analysis confirmed the monoclinic structure for the system. The exploration of SEM predicted the compound to be comprising of micro crystals with irregular morphology. From UV–vis spectroscopy, high transmission was displayed by these crystals in the entire visible range. The optical band gap (Eg) was found to be around 3.39eV and the compound exhibited indirect allowed transitions. PL data showed good emission at certain wavelengths in visible region. The present properties of the compound can be explored for optoelectronics.
Bibliography:ObjectType-Article-1
SourceType-Scholarly Journals-1
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content type line 23
ISSN:0030-4026
1618-1336
DOI:10.1016/j.ijleo.2015.11.224