Related Experiment Video
Updated: Jun 13, 2026

Proton Transfer and Protein Conformation Dynamics in Photosensitive Proteins by Time-resolved Step-scan Fourier-transform Infrared Spectroscopy
Published on: June 27, 2014
FTIR spectra and normal-mode analysis of chlorin e(6) and its degradation-induced impurities
O L Gladkova1, M V Parkhats, A N Gorbachova
1Higher State College of Communications, 220014 Minsk, Belarus. olga_gladkova@tut.by
Abstract:
Fourier transform infrared spectra of chlorin e(6) and its trisodium salt are presented. The geometrical structure and frequencies of normal vibrations of both compounds were calculated using density functional method with the PBE exchange-correlation functional. The frequencies were assigned and IR spectra of the studied molecules were interpreted for the first time. Spectral effects of degradation of chlorin e(6) and its trisodium salt upon their storage on the air are analyzed. The possible structures of degraded species are discussed.
More Related Videos
09:11Raman and IR Spectroelectrochemical Methods as Tools to Analyze Conjugated Organic Compounds
Published on: October 12, 2018
05:46Identification of Pharmaceuticals in The Aquatic Environment Using HPLC-ESI-Q-TOF-MS and Elimination of Erythromycin Through Photo-Induced Degradation
Published on: August 1, 2018
Related Concept Videos
IR Frequency Region: Fingerprint Region
The...
IR Spectrum
Transmittance is defined as the ratio of the radiant power passing through a sample to that from the radiation's source. Multiplying the transmittance by 100 gives the percent transmittance (%T), which varies between 100% (no absorption) and 0% (complete...
IR Spectroscopy: Molecular Vibration Overview
Stretching vibrations are vibrational motions that occur along the bond line, changing the bond length or distance between two bonded atoms. They are further distinguished as symmetric or asymmetric. In symmetric stretching, the...
Infrared (IR) Spectroscopy: Overview
Different compounds display unique properties due to their...
Mass Spectrometry: Alkyl Halide Fragmentation
IR Spectrum Peak Intensity: Amount of IR-Active Bonds