I took absorption and excitation spectra of a same species in the same solvent. Ideally I should get the excitation spectra almost similar to the absorbance spectra. But I got the excitation spectra around 20 nm red-shifted from the absorbance spectra. How can I explain the result?
Narayanan Janakiraman
In principle Both Absorption spectra and excitation spectra are same. if same sample solution is used to measure both and getting 20nm red shift means i.e increase in absorbance wavelength, then primarily you can check the band width filter and try to change and record the same. see if you are getting the same lambda max or different wavelength
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