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Red and near-infrared emitting bis-coumarin analogues based on curcumin framework-synthesis and photophysical studies

Paper ID Volume ID Publish Year Pages File Format Full-Text
26099 43934 2016 13 PDF Available
Title
Red and near-infrared emitting bis-coumarin analogues based on curcumin framework-synthesis and photophysical studies
Abstract

•Red and Near Infra-Red (NIR) emitting bis-coumarin analogues.•The synthesized molecules are based on curcumin framework.•Photophysical properties are studied in different microenvironments.•Solvatochromic study based on solvent polarity functions.

Four fluorescent bis-coumarin analogues were synthesized having donor-acceptor-donor (D-A-D) system based on curcumin framework, where the 7-(diethylamino)coumarin-3-carbaldehyde has been employed as donor while the central 1,3-diketo or 1,3-diketofluoroborate is the acceptor core. The structural modifications have been made by functionalizing acetylacetone or 2-acetyl cyclopentanone to study the effect of imparting rigidity on the photophysical properties of the bis-coumarin analogues. The difluoroboron complexes of bis-coumarin analogues were synthesized to study the effect of difluoroboron complexation on the photophysical properties. The mono-coumarin analogue is synthesized to understand the nature and the contribution of the donor groups in bis-coumarin of the curcumin framework. The photophysical properties are studied in detail using solvents of differing polarity. The photophysical properties of the newly synthesized bis-coumarin molecules were compared with the priviosly reported bis-coumarin analogues.

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Keywords
Curcumin; Bis-Coumarin; Coumarin; Solvatochromism; Fluorescence
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Red and near-infrared emitting bis-coumarin analogues based on curcumin framework-synthesis and photophysical studies
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Publisher
Database: Elsevier - ScienceDirect
Journal: Journal of Photochemistry and Photobiology A: Chemistry - Volume 327, 15 August 2016, Pages 58–70
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Bioengineering
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
Online Support
Any Questions? feel free to contact us