Oxadicarbocyanine (C5)dye |
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| The chemical structure of Oxadicarbocyanine (C5)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 Oxadicarbocyanine (C5)dye dissolved in ethanol. 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]. Oxadicarbocyanine (C5)dye has a molar extinction coefficient of 238,000 M-1cm-1 at 582 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].
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Fluorescence
This is the fluorescence emission spectrum of Oxadicarbocyanine (C5)dye dissolved in ethanol. The spectrum was taken by R. A. Fuh on summer, 95 using an excitation wavelength of 540 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 0.49 [D. N. Dempster, T. Morrow, R. Rankin, and G. F. Thompson, "Photochemical characteristics of cyanine dyes. Part 1. 3,3'-Diethyloxadicarbocyanine iodide and 3,3'-diethylthiadicarbocyanine iodide," J. Chem. Soc., Faraday Trans. II, 68, 1479-1496, 1972]. |
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