TY - GEN
T1 - Investigating the low-frequency vibrations of chlorophyll derivatives using terahertz spectroscopy
AU - Coquillat, Dominique
AU - O'Connor, Emma
AU - Brouillet, Etienne V.
AU - Meriguet, Yoann
AU - Bray, Cedric
AU - Nelson, David J.
AU - Faulds, Karen
AU - Torres, Jeremie
AU - Dyakonova, Nina
N1 - Copyright 2021 Society of Photo‑Optical Instrumentation Engineers (SPIE). One print or electronic copy may be made for personal use only. Systematic reproduction and distribution, duplication of any material in this publication for a fee or for commercial purposes, and modification of the contents of the publication are prohibited.
PY - 2021/8/1
Y1 - 2021/8/1
N2 - 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.
AB - 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.
KW - chlorophyll
KW - intermolecular vibrations
KW - mass spectroscopy
KW - sodium copper chlorophyllin
KW - sodium magnesium chlorophyllin
KW - surface-enhanced Raman spectroscopy
KW - terahertz time-domain spectroscopy
UR - http://www.scopus.com/inward/record.url?scp=85116004879&partnerID=8YFLogxK
U2 - 10.1117/12.2593589
DO - 10.1117/12.2593589
M3 - Conference contribution book
AN - SCOPUS:85116004879
T3 - Proceedings of SPIE - The International Society for Optical Engineering
BT - Terahertz Emitters, Receivers, and Applications XII
A2 - Razeghi, Manijeh
A2 - Baranov, Alexei N.
CY - Bellingham, Washington
T2 - Terahertz Emitters, Receivers, and Applications XII 2021
Y2 - 1 August 2021 through 5 August 2021
ER -