Structure elucidation of laser dye coumarin-540A by joint application of X-ray diffraction, X-ray fluorescence, prompt fluorescence, UV and visible spectroscopy.
X-ray, ultraviolet, and visible light induced photophysical changes of coumarin-540A in ethanol have been studied by the joint applications of X-ray, ultraviolet, and visible spectroscopy. Some impurities were found by X-ray fluorescence measurements. During the high power optical pumping, coumarin showed photochemical changes. Photoproduct emission spectra characteristics showed that photoproduct molecules can also be used as a laser dye at a different emission frequency in the ultraviolet region.
Keskin
Sinan S
SS
Department of Biomedical Engineering, Yeditepe University, 34755 Istanbul, Turkey.
Aslan
Necdet
N
Bayrakçeken
Fuat
F
D003374:Coumarins / Q000737:chemistry*; D004340:Drug Contamination; D000431:Ethanol / Q000737:chemistry; D007202:Indicators and Reagents / Q000737:chemistry*; D007834:Lasers; D015394:Molecular Structure; D010777:Photochemistry; D012997:Solvents / Q000737:chemistry; D013050:Spectrometry, Fluorescence; D013052:Spectrometry, X-Ray Emission; D013056:Spectrophotometry, Ultraviolet; D014961:X-Ray Diffraction
D003374:Coumarins; D007202:Indicators and Reagents; D012997:Solvents; D000431:Ethanol