Rhodamine 123 |
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| The chemical structure of Rhodamine 123 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 Rhodamine 123 dissolved in ethanol. It was measured by R. A. Fuh on 6/19/95 [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]. Rhodamine 123 has a molar extinction coefficient of 85,200 M-1cm-1 at 511.75 nm [anonymous, "Eastman Laboratory Chemicals Catalog No," 1993]. The literature fluorescence yield data are assumed to have been obtained in ethanol. |
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Fluorescence
This is the fluorescence emission spectrum of Rhodamine 123 dissolved in ethanol. The spectrum was taken by R. A. Fuh on 6/19/95 using an excitation wavelength of 480 nm [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]. The quantum yield is 0.9 [R. F. Kubin and A. N. Fletcher, "Fluorescence quantum yields of some rhodamine dyes.," J. Luminescence, 27, 455-462, 1982]. |
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