Octaethylporphyrin |
|
| The chemical structure of Octaethylporphyrin 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. |
|
Absorption
This is a graph of the molar extinction coefficient of Octaethylporphyrin dissolved in benzene. 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]. Octaethylporphyrin has a molar extinction coefficient of 159,000 M-1cm-1 at 400 nm [U. Eisner, A. Lichtarowicz, and R. P. Linstead, "Chlorophyll and related compounds. Part VI. The synthesis of octaethylchlorin.," J. Chem. Soc., 733-739, 1957].
|
|
Fluorescence
This is the fluorescence emission spectrum of Octaethylporphyrin dissolved in benzene. The spectrum was taken by Junzhong Li on 12/11/97 using an excitation wavelength of 400 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 0.13 [O. Ohno, Y. Kaizu, and H. Kobayashi, "Luminescence of some metalloporphins including the complexes of the IIIb metal group.," J. Chem. Phys., 82, 1779-1787, 1985]. |
|