TY  - JOUR
AU  - Hartweg, Sebastian
AU  - Garcia, Gustavo A.
AU  - Božanić, Dušan K.
AU  - Nahon, Laurent
PY  - 2021
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/9155
AB  - Structural changes at the molecular level, occurring at the onset of condensation, can be probed by angle-resolved valence photoelectron spectroscopy, which is inherently sensitive to the electronic structure. For larger condensed systems like aerosol particles, the observation of intrinsic angular anisotropies in photoemission (β parameters) is challenging due to the strong reduction of their magnitude by electron transport effects. Here, we use a less common, more sensitive observable in the form of the chiral asymmetry parameter to perform a comparative study of the VUV photoelectron spectroscopy and photoelectron circular dichroism (PECD) between pure gas phase enantiomers of the amino acid serine and their corresponding homochiral nanoparticles. We observe a relatively large (1%) and strongly kinetic energy-dependent asymmetry, discussed in terms of the emergence of local order and conformational changes potentially counterbalancing the loss of angular information due to electron transport scattering. This demonstrates the potential of PECD as a sensitive probe of the condensation effects from the gas phase to bulk-like chiral aerosol particles surpassing the potential of conventional photoemission observables such as β parameters. ©
T2  - The Journal of Physical Chemistry Letters
T1  - Condensation Effects on Electron Chiral Asymmetries in the Photoionization of Serine: From Free Molecules to Nanoparticles
VL  - 12
IS  - 9
SP  - 2385
EP  - 2393
DO  - 10.1021/acs.jpclett.1c00258
ER  - 

@article{
author = "Hartweg, Sebastian and Garcia, Gustavo A. and Božanić, Dušan K. and Nahon, Laurent",
year = "2021",
abstract = "Structural changes at the molecular level, occurring at the onset of condensation, can be probed by angle-resolved valence photoelectron spectroscopy, which is inherently sensitive to the electronic structure. For larger condensed systems like aerosol particles, the observation of intrinsic angular anisotropies in photoemission (β parameters) is challenging due to the strong reduction of their magnitude by electron transport effects. Here, we use a less common, more sensitive observable in the form of the chiral asymmetry parameter to perform a comparative study of the VUV photoelectron spectroscopy and photoelectron circular dichroism (PECD) between pure gas phase enantiomers of the amino acid serine and their corresponding homochiral nanoparticles. We observe a relatively large (1%) and strongly kinetic energy-dependent asymmetry, discussed in terms of the emergence of local order and conformational changes potentially counterbalancing the loss of angular information due to electron transport scattering. This demonstrates the potential of PECD as a sensitive probe of the condensation effects from the gas phase to bulk-like chiral aerosol particles surpassing the potential of conventional photoemission observables such as β parameters. ©",
journal = "The Journal of Physical Chemistry Letters",
title = "Condensation Effects on Electron Chiral Asymmetries in the Photoionization of Serine: From Free Molecules to Nanoparticles",
volume = "12",
number = "9",
pages = "2385-2393",
doi = "10.1021/acs.jpclett.1c00258"
}

Hartweg, S., Garcia, G. A., Božanić, D. K.,& Nahon, L.. (2021). Condensation Effects on Electron Chiral Asymmetries in the Photoionization of Serine: From Free Molecules to Nanoparticles. in The Journal of Physical Chemistry Letters, 12(9), 2385-2393.
https://doi.org/10.1021/acs.jpclett.1c00258

Hartweg S, Garcia GA, Božanić DK, Nahon L. Condensation Effects on Electron Chiral Asymmetries in the Photoionization of Serine: From Free Molecules to Nanoparticles. in The Journal of Physical Chemistry Letters. 2021;12(9):2385-2393.
doi:10.1021/acs.jpclett.1c00258 .

Hartweg, Sebastian, Garcia, Gustavo A., Božanić, Dušan K., Nahon, Laurent, "Condensation Effects on Electron Chiral Asymmetries in the Photoionization of Serine: From Free Molecules to Nanoparticles" in The Journal of Physical Chemistry Letters, 12, no. 9 (2021):2385-2393,
https://doi.org/10.1021/acs.jpclett.1c00258 . .