Is it possible to conclude that increasing the intensity of FT-IR peaks represents an increment of functional groups or interaction between functional groups?
Any suggestion would be highly appreciated.
If the spectrum is plotted in Absorbance, the strength of the peak is the absorbance of the sample at that wavenumber, which is related to the intrinsic oscillator strength of the vibrational transition, and the number of absorbing species (functional groups).
Interactions between functional groups can change the absorption strength, and or peak shape/positioning.
Some basic introductory texts on absorption spectroscopy could you you.
FTIR spectroscopy indicates the measurement of the molecular level by providing information about the functional group and bond for a compound. In case of any reaction or structure change The pick shift is at the ftir absorbence curve. And if material of equal quantity and thickness is used, then more or less intensity can be seen for any chemical interaction.
Here is a kind of introductory text like it was mentioned by Hugh: Article The Bouguer-Beer-Lambert Law: Shining Light on the Obscure
Focus on sections 3.2-3.4.- Badges
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