Photoelectron circular dichroism in angle-resolved photoemission from liquid fenchone
Marvin Pohl, Sebastian Malerz, Florian Trinter, Chin Lee, Claudia, Kolbeck, Iain Wilkinson, Stephan Th\"urmer, Daniel M. Neumark, Laurent Nahon,, Ivan Powis, Gerard Meijer, Bernd Winter, Uwe Hergenhahn
TL;DR
This study demonstrates the first measurement of photoelectron circular dichroism in liquid fenchone, revealing asymmetry in the C 1s spectra and opening new avenues for probing molecular chirality in solutions.
Contribution
It introduces a novel experimental setup for PECD measurements on liquid microjets and applies it to liquid fenchone, showing measurable chiral asymmetry.
Findings
Non-zero PECD asymmetry observed in liquid fenchone
First application of PECD to liquid-phase chiral molecules
Potential for new chiral analysis in aqueous solutions
Abstract
We present an experimental X-ray photoelectron circular dichroism (PECD) study of liquid fenchone at the C 1s edge. A novel setup to enable PECD measurements on a liquid microjet [Malerz et al., Rev. Sci. Instrum., 2022, 93, 015101] was used. For the C 1s line assigned to fenchone's carbonyl carbon, a non-vanishing asymmetry is found in the intensity of photoelectron spectra acquired under a fixed angle in the backward-scattering plane. This experiment paves the way towards a novel probe of the chirality of organic/biological molecules in aqueous solution.
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