Indotricarbocyanine (C7)dye |
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| The chemical structure of Indotricarbocyanine (C7)dye 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 Indotricarbocyanine (C7)dye dissolved in ethanol. It was measured by R. A. Fuh on 6/20/95 [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]. Indotricarbocyanine (C7)dye has a molar extinction coefficient of 240,000 M-1cm-1 at 742.25 nm [P. J. Sims, A. S. Waggoner, C.-H. Wang, and J. F. Hoffman, "Studies on the mechanism by which cyanine dyes measure membrane potential in red blood cells and phosphatidylcholine vesicles," Biochem., 13, 3315-3330, 1974].
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Fluorescence
This is the fluorescence emission spectrum of Indotricarbocyanine (C7)dye dissolved in ethanol. The spectrum was taken by R. A. Fuh on 6/20/95 using an excitation wavelength of 690 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 0.28 [J. X. Duggan, J. DiCesare, and J. F. Williams, "Investigations on the use of laser dyes as quantum counters for obtaining corrected fluorescence spectra in the near infrared," in New Directions in Molecular Luminescence, ASTM Special Technical Publication, 822, (D. Eastwood, ed.), (Philadelphia, PA), 112-126, 1983]. |
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