Abstract
The terahertz absorption spectra of sodium magnesium chlorophyllin (Chl-Mg-Na) and sodium copper chlorophyllin (Cu-Chl), two major members of the chlorophyll derivative family, have been measured in the range 0.2-3.0 THz (6.6-100 cm-1), at room temperature. Additionally, surface-enhanced Raman scattering spectroscopy was used to supplement data in the higher frequency range. The capability of terahertz spectroscopy for quantitative characterization of Chl-Mg-Na intermolecular vibrations was investigated and the sensitivity of the 1.82-THz feature with degree of hydration by changes in the molecular environment was examined. For Cu-Chl derivative, a broad feature was observed around 1.8 THz which currently hinders clear Cu-Chl identification and quantification.
Original language | English |
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Title of host publication | Terahertz Emitters, Receivers, and Applications XII |
Editors | Manijeh Razeghi, Alexei N. Baranov |
Place of Publication | Bellingham, Washington |
Number of pages | 4 |
ISBN (Electronic) | 9781510644922 |
DOIs | |
Publication status | Published - 1 Aug 2021 |
Event | Terahertz Emitters, Receivers, and Applications XII 2021 - San Diego, United States Duration: 1 Aug 2021 → 5 Aug 2021 |
Publication series
Name | Proceedings of SPIE - The International Society for Optical Engineering |
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Volume | 11827 |
ISSN (Print) | 0277-786X |
ISSN (Electronic) | 1996-756X |
Conference
Conference | Terahertz Emitters, Receivers, and Applications XII 2021 |
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Country/Territory | United States |
City | San Diego |
Period | 1/08/21 → 5/08/21 |
Funding
Acknowlegments: This project is supported by the Contrat de Plan Etat-Région (CPER)-Région Occitanie “PlantEnvi”, by the Montpellier University of Excellence I-Site MUSE (PRIME@MUSE), and by CNRS through International Research Project “TeraMIR”. The authors thank Catalyons Laboratories for providing chlorophyll derivative powders
Keywords
- chlorophyll
- intermolecular vibrations
- mass spectroscopy
- sodium copper chlorophyllin
- sodium magnesium chlorophyllin
- surface-enhanced Raman spectroscopy
- terahertz time-domain spectroscopy