Thiacarbocyanine (C3)dye, ethanol |
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| The chemical structure of Thiacarbocyanine (C3)dye, ethanol 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 Thiacarbocyanine (C3)dye dissolved in ethanol. It was measured by Junzhong Li on 12/11/97 [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]. Thiacarbocyanine (C3)dye, ethanol has a molar extinction coefficient of 126,000 M-1cm-1 at 559 nm [C. J. Tredwell and C. M. Keary, "Picosecond time resolved fluorescence lifetimes of the polymethine and related dyes.," Chem. Phys., 43, 307-316, 1979]. The fluorescence yield is reported to be 0.045 in methanol [S. Rentsch, R. Danielius, and R. Gadonas, "Bestimmung von Lebensdauern und Transientenabsorptionsspektren von Polymethinfarbstoffen aus pikosekunden-spektroskopischen Messungen.," J. Signalaufz.-Mater., 12, 319-328, 1984]. |
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Fluorescence
This is the fluorescence emission spectrum of Thiacarbocyanine (C3)dye dissolved in ethanol. The spectrum was taken by R. A. Fuh on 6/25/97 using an excitation wavelength of 545 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 0.05 [V. A. Kuzmin and A. P. Darmanyan, "Study of sterically hindered short-lived isomers of polymethine dyes by laser photolysis.," Chem. Phys. Lett., 54, 159-163, 1978]. |
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