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Paper "Single Photon Photoelectron Elliptical Dichroism of Amino Acid Anions" accepted by Physical chemistry Chemical Physics (PCCP)

Jon Henrik Both and Karl-Michael Weitzel
Fachbereich Chemie, Philipps-Universität Marburg, 35032 Marburg, Germany

Single photon photoelectron elliptical dichroism (PEELD) has been investigated in the photodetachment of electrosprayed amino acid anions, i.) tryptophan (Trp) and ii.) phenylalanine (Phe). PEELD refers to the variation of the asymmetry parameter 𝐺 with the ellipticity parameter |𝑆3/𝑆0|. For Trp 𝐺 is found to scale linearly with |𝑆3/𝑆0|. For Phe a small but significant deviation from linear scaling is observed in the region of 0.8 ≤ |𝑆3/𝑆0| ≤ 1, i.e. approaching perfect circular polarization. Commonalities and differences to existing PEELD literature are being discussed.

view article online at: DOI: https://doi.org/10.1039/D5CP03324A