Crystal violet, H2O |
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| The chemical structure of Crystal violet, H2O is shown at the right. The absorption and fluorescence emission spectra are shown below. The structure, absorption, and fluorescence data were all obtained from the PhotochemCAD package by Jonathan Lindsey. This excellent program allows rapid comparison of spectra and enables one to do a variety of photochemically relevant calculations. |
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Absorption
This is a graph of the molar extinction coefficient of Crystal violet, H2O dissolved in water. It was measured by R. A. Fuh on summer, 95 [H. Du, R. A. Fuh, J. Li, A. Corkan, J. S. Lindsey, "PhotochemCAD: A computer-aided design and research tool in photochemistry," Photochemistry and Photobiology, 68, 141-142, 1998]. Crystal violet, H2O has a molar extinction coefficient of 112,000 M-1cm-1 at 509.5 nm [H. Zollinger, Color Chemistry: Syntheses Properties and Applications of Organic Dyes and Pigments, VCH Verlagsgesellschaft mbH, 1987]. A fluorescence spectrum was not recorded since most arylmethine dyes have such low emission in fluid solvents. The fluorescence decay depends markedly on solvent viscosity [D. A. Cremers and M. W. Windsor, "A study of the viscosity-dependent electronic relaxation of some triphenylmethane dyes using picosecond flash photolysis," Chem. Phys. Lett., 71, 27-32, 1980] and the fluorescence yield is 0.019 in the viscous solvent glycerol [L. A. Brey, G. B. Schuster, and H. G. Drickamer, "High pressure studies of the effect of viscosity on fluorescence efficiency in crystal violet and auramine O," J. Chem. Phys., 67, 2648-2650, 1977]. |
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