This page summarizes the optical absorption and emission data of Chlorin e6 that is available in the PhotochemCAD package, version 2.1a (Du 1998, Dixon 2005). I reworked their data to produce these interactive graphs and to provide direct links to text files containing the raw and manipulated data. Although I have tried to be careful, I may have introduced some errors; the cautious user is advised to compare these results with the original sources.
This optical absorption measurement of Chlorin e6 were made by M. Taniguchi on 10-02-2004 using a HP 8453. The absorption values were collected using a spectral bandwidth of 1.0 nm.
These measurements were scaled to make the molar extinction coefficient match the value of 55,000cm-1/M at 667.0nm (Nyman, 2004).
The fluorescence emission spectrum of Chlorin e6 dissolved in ethanol. The quantum yield of this molecule is 0.16 (Kay, 1994). This spectrum was collected by on 10-02-2004 using a PTI QM-4/2003 SE. The excitation and emission monochromators were set at 0.25 mm, giving a spectral bandwidth of 1 nm. The data interval was 1 nm and the integration time was 1 sec.
Samples were prepared in 1cm pathlength quartz cells with absorbance less than 0.1 at the excitation and all emission wavelengths to uniformly illuminate across the sample, and to avoid the inner-filter effect. The dark counts were subtracted and the spectra were corrected for wavelength-dependent instrument sensitivity.
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Zenkevich, E., E. Sagun, V. Knyukshto, A. Shulga, A. Mironov, O. Efremova, R. Bonnett, S. P. Songca and M. Kassem (1996) Photophysical and photochemical properties of potential porphyrin and chlorin photosensitizers for PDT. J. Photochem. Photobiol. B: Biol. 33, 171-180.
© 5 March 2012 Scott Prahl