All Questions
Tagged with absorption uv-vis-spectroscopy
5
questions
1
vote
1
answer
84
views
UV-Vis Absorption Spectra climbing at lower wavelengths
I have run a sample of Pyrene in Ethanol and got a UV Vis absorbance spectra that starts climbing as it reaches the lower wavelengths. I am using quartz cuvettes and was wondering what could be the ...
- 11
5
votes
1
answer
493
views
The reason for selection of wavelengths in the spectrophotometry of Quinoline Yellow SS
The absorption spectrum for Quinoline Yellow SS has peaks at 224 nm and 414 nm, and a trough at 337 nm.
This experiment (see page 31), selects 224, 337 and 414 nm to be used in the spectrophotometric ...
1
vote
0
answers
359
views
Absorption Curves Normalization
I have absorption curves for three species that are nominally the same concentration that I need in order to calculate spectral overlap. Part of that process is dividing the curve through by the ...
- 11
2
votes
2
answers
1k
views
Why do some molecules show non-symmetric absorption and emission bands?
I'm looking at a molecule of [Ru(bpy)3]2+ in water and the absorption and emission bands are not symmetrical. I want to know why the mirror image rule doesn't apply here. Is this because of the MLCT, ...
- 23
2
votes
0
answers
58
views
tolerable error, CASSCF simulation of UV/Vis spectrum
Please forgive my ignorance of experimental spectroscopy. I am a computational chemist, not an experimental one. My question is: what would be considered a tolerable or reasonable difference between ...
- 21