Freiburg 2024 – wissenschaftliches Programm

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MO: Fachverband Molekülphysik

MO 23: Poster: Chirality

MO 23.9: Poster

Donnerstag, 14. März 2024, 17:00–19:00, Tent C

Raman Optical Activity Of Glucose — •Klaus Hofmann, Luisa Martin, and Ingo Fischer — Universität Würzburg, 97074 Würzburg, Germany

Raman Optical Activity (ROA) is a type of vibrational circular dichroism: chiral samples show different Raman intensities when utilizing circular polarized light. The ROA signal is very sensitive to the molecular geometry and environment of the sample, but also exhibits high levels of noise and false signals, since the intensity difference is roughly 0.1% of the corresponding Raman peak.

Using a custom built cost-efficient ROA spectrometer, the signal of the two glucose enantiomers in aqueous solution was recorded, with exposure times of one week each. Python was used to automate the setup modulation, data acquisition and post-processing. The result agrees with literature and matches spectra acquired on commercially availible spectrometer.

Keywords: ROA; Raman; circular dichroism