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Synthesis, crystal structures and fluorescence properties of 3-(2-pyridyl)coumarin derivatives

Paper ID Volume ID Publish Year Pages File Format Full-Text
27524 44028 2010 8 PDF Available
Title
Synthesis, crystal structures and fluorescence properties of 3-(2-pyridyl)coumarin derivatives
Abstract

Two new coumarin derivatives, 7-(diethylamino)-3-(pyridin-2-yl)coumarin (DAPC) and 3-(pyridin-2-yl)-benzo[5,6]coumarin (PBC), were synthesized and characterized by elemental analysis, 1H NMR, FT-IR and UV–vis absorption spectra. Their structures were determined by X-ray crystallography single crystal analysis. The fluorescence behaviors of the compounds in dichloromethane solutions were observed. The results show that the compound DAPC exhibits high fluorescence quantum yield (0.84) and they exhibit strong blue emissions under ultraviolet light excitation. The energy levels of the HOMO and LUMO of the compounds have been calculated with density functional theory (DFT) and time-dependent density functional theory (TD-DFT) at B3LYP/6-31G(d) level.

Keywords
Synthesis; Crystal structure; 3-(2-Pyridyl)coumarin derivatives; Fluorescence
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Synthesis, crystal structures and fluorescence properties of 3-(2-pyridyl)coumarin derivatives
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Publisher
Database: Elsevier - ScienceDirect
Journal: Journal of Photochemistry and Photobiology A: Chemistry - Volume 214, Issue 1, 5 July 2010, Pages 92–99
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Bioengineering
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Price was $35.95
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