conducted a UV-vis spectra for caffeine/PVA films. I got two peaks at about 203nm and 272nm. I think that those are related to the imino group of the imidazole ring and the carbonyl group, respectively. Also, the associated transitions are pi to pi* and n to pi*, respectively. Can you help me verifying that?. One more question, 203nm peak experiments a bathochromic shift at higher caffeine concentrations... is that mean an increase in conjugation due to the addition of more axochromic molecules? or what is a better description for that shift. It has something to do with the PVA matrix?
Analyzing Infrared Spectra
The electromagnetic radiation or frequency is classified into radio-waves, micro-waves, infrared, visible, ultraviolet, X-rays and gamma rays. The infrared spectra emission refers to the portion between the visible and the microwave areas of electromagnetic spectrum. This spectral area is usually divided into three parts, near infrared (14,290 – 4000 cm-1), mid infrared (4000 – 400 cm-1), and far infrared (700 – 200 cm-1), respectively. The number set is the number of the wave (cm-1).
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It is the analysis of the structure of cyclohexaone using IR data interpretation.
IR Spectrum Of Anisole
Interpretation of anisole using IR spectrum obtained from IR analysis.
IR Spectroscopy
Infrared (IR) or vibrational spectroscopy is a method used for analyzing the particle's vibratory transformations. This is one of the very popular spectroscopic approaches employed by inorganic as well as organic laboratories because it is helpful in evaluating and distinguishing the frameworks of the molecules. The infra-red spectroscopy process or procedure is carried out using a tool called an infrared spectrometer to obtain an infrared spectral (or spectrophotometer).
I conducted a UV-vis spectra for caffeine/PVA films. I got two peaks at about 203nm and 272nm. I think that those are related to the imino group of the imidazole ring and the carbonyl group, respectively. Also, the associated transitions are pi to pi* and n to pi*, respectively. Can you help me verifying that?.
One more question, 203nm peak experiments a bathochromic shift at higher caffeine concentrations... is that mean an increase in conjugation due to the addition of more axochromic molecules? or what is a better description for that shift. It has something to do with the PVA matrix?
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