Analysis of sodium copper chlorophyllin and sodium magnesium chlorophyllin by time-domain THz spectroscopy

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Bray, Cedric and Dyakonova, Nina and O'Connor, Emma and Brouillet, Etienne V. and Meriguet, Yoann and Nelson, David J. and Faulds, Karen and Torres, Jeremie and Coquillat, Dominique; (2022) Analysis of sodium copper chlorophyllin and sodium magnesium chlorophyllin by time-domain THz spectroscopy. In: 2022 47th International Conference on Infrared, Millimeter and Terahertz Waves (IRMMW-THz). IEEE, Piscataway, NJ.. ISBN 9781728194271 (https://doi.org/10.1109/irmmw-thz50927.2022.989546...)

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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 0.2-2.5 THz, at room temperature. The capability of terahertz spectroscopy for quantitative characterization of Chl-Mg-Na intermolecular vibrations was investigated and the sensitivity of transitions with degree of hydration by changes in the molecular environment was examined. For the Cu-Chl derivative, a broad feature was observed around 1.8 THz which currently hinders clear Cu-Chl identification and quantification.

ORCID iDs

Bray, Cedric, Dyakonova, Nina, O'Connor, Emma, Brouillet, Etienne V. ORCID logoORCID: https://orcid.org/0000-0001-5854-1983, Meriguet, Yoann, Nelson, David J. ORCID logoORCID: https://orcid.org/0000-0002-9461-5182, Faulds, Karen ORCID logoORCID: https://orcid.org/0000-0002-5567-7399, Torres, Jeremie and Coquillat, Dominique;
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