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When caffeine was added to the electrospun fiber mats, the presence of an extra peak at 1701 cm − 1 (Fig. 5B) exhibited the presence of caffeine, representing the C--O stretching vibrations in...
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When caffeine was added to the electrospun fiber mats, the...
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When analyzing an IR spectrum, it is helpful to overlay the diagram below onto the spectrum with our mind to help recognize functional groups. Figure 1. Group frequency and fingerprint regions of the mid-infrared spectrum
Permanent link for this species. Use this link for bookmarking this species for future reference. Information on this page: Infrared Spectrum. References. Notes. Other data available: Condensed phase thermochemistry data. Phase change data.
The IR spectrum of caffeine offers a wealth of information about its molecular structure and characteristics. By understanding the peaks and absorption bands, researchers can gain insights into the purity, stability, and therapeutic potential of caffeine-containing products.
Fourier Transform Infrared (FT-IR) spectrometry offers an excellent sensitivity for caffeine determination, based on the absorbance of this compound in the middle infrared [3].
that the impurities in the isolated caffeine spectrum originated from the solvent used for NMR measure-ments, not only from the isolated caffeine. The rela-tionships between the NMR peaks (standard caffeine and a crystal of caffeine) and the functional groups are listed in Table 1.
Infrared Spectrum of Caffeine. Click on the peaks in the spectrum to see the molecular vibration they corresponds to. The ball and stick molecule can be rotated. All vibrational modes are included in both the stretching and bending regions.
