Temperature-dependent Photodegradation in UV-resonance Raman Spectroscopy
| Autor: | Atushi Taguchi, Yuika Saito, Satoshi Kawata, Hikaru Yoshino, Prabhat Verma, Yasuaki Kumamoto |
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| Rok vydání: | 2015 |
| Předmět: |
Arrhenius equation
Photolysis Molecular Structure Ultraviolet Rays Photothermal effect Resonance Raman spectroscopy Temperature Analytical chemistry Bacteriochlorophyll A Activation energy Spectrum Analysis Raman Photochemistry Decomposition Analytical Chemistry symbols.namesake chemistry.chemical_compound chemistry symbols Bacteriochlorophyll Raman spectroscopy Photodegradation |
| Zdroj: | Scopus-Elsevier |
| ISSN: | 1348-2246 0910-6340 |
| DOI: | 10.2116/analsci.31.451 |
| Popis: | Temperature-dependent photodegradation during UV-resonance Raman spectroscopy was investigated. Photodegradation was quantitatively probed by monitoring the temporal evolution of UV-resonance Raman spectra obtained from bacteriochlorophyll (BChl) showing, resonance effect at a 355-nm excitation wavelength. At 80 K, the molecular photodecomposition rate was 5-times lower than that at room temperature. The decomposition rates of BChl were analyzed by the Arrhenius formula, indicating that the mechanism of photodegradation includes a thermal process having an activation energy of 1.4 kJ/mol. |
| Databáze: | OpenAIRE |
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