TY  - JOUR
AU  - Božanić, Dušan K.
AU  - Garcia, Gustavo A.
AU  - Sublemontier, Olivier
AU  - Pajović, Jelena
AU  - Đoković, Vladimir
AU  - Nahon, Laurent
PY  - 2020
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/9727
AB  - We present an angle-resolved photoelectron spectroscopy study on isolated gold nanoparticles in the photon energy range between 6 and 12 eV performed at the DESIRS beamline of Synchrotron SOLEIL with a velocity map imaging spectrometer. The data are reported for polydisperse gold aerosols formed from hydrocolloids of bare and citrate-capped primary nanoparticles. The aerosols were brought to interact with the synchrotron radiation via a high-performance aerodynamic lens system developed for this study. The electronic structure of the aerosols was elucidated by threshold photoemission spectroscopy, which showed excellent agreement with the theoretical density of states. The photoionization cross sections of isolated gold particles were derived in the ∼104 to 106 Mb range between 8 and 12 eV. We introduce a new methodology to extract all of the photoemission observables from the electron images as a function of electron energy, including photoelectron spectrum, anisotropy parameter b2, and asymmetry parameter, α(E), which describes the shadowing asymmetry along the radiation propagation axis. The results show that electron energy distribution depends on the procedure used in the synthesis of the nanoparticles and on the ligand concentration. The dependence of the asymmetry parameter on electron energy along the valence band is rationalized through theoretical modeling in terms of the electric field distribution inside the particle and the losses due to inelastic scattering.
T2  - The Journal of Physical Chemistry C
T1  - Velocity Map Imaging VUV Angle-Resolved Photoemission on Isolated Nanosystems: Case of Gold Nanoparticles
VL  - 124
IS  - 44
SP  - 24500
EP  - 24512
DO  - 10.1021/acs.jpcc.0c08152
ER  - 

@article{
author = "Božanić, Dušan K. and Garcia, Gustavo A. and Sublemontier, Olivier and Pajović, Jelena and Đoković, Vladimir and Nahon, Laurent",
year = "2020",
abstract = "We present an angle-resolved photoelectron spectroscopy study on isolated gold nanoparticles in the photon energy range between 6 and 12 eV performed at the DESIRS beamline of Synchrotron SOLEIL with a velocity map imaging spectrometer. The data are reported for polydisperse gold aerosols formed from hydrocolloids of bare and citrate-capped primary nanoparticles. The aerosols were brought to interact with the synchrotron radiation via a high-performance aerodynamic lens system developed for this study. The electronic structure of the aerosols was elucidated by threshold photoemission spectroscopy, which showed excellent agreement with the theoretical density of states. The photoionization cross sections of isolated gold particles were derived in the ∼104 to 106 Mb range between 8 and 12 eV. We introduce a new methodology to extract all of the photoemission observables from the electron images as a function of electron energy, including photoelectron spectrum, anisotropy parameter b2, and asymmetry parameter, α(E), which describes the shadowing asymmetry along the radiation propagation axis. The results show that electron energy distribution depends on the procedure used in the synthesis of the nanoparticles and on the ligand concentration. The dependence of the asymmetry parameter on electron energy along the valence band is rationalized through theoretical modeling in terms of the electric field distribution inside the particle and the losses due to inelastic scattering.",
journal = "The Journal of Physical Chemistry C",
title = "Velocity Map Imaging VUV Angle-Resolved Photoemission on Isolated Nanosystems: Case of Gold Nanoparticles",
volume = "124",
number = "44",
pages = "24500-24512",
doi = "10.1021/acs.jpcc.0c08152"
}

Božanić, D. K., Garcia, G. A., Sublemontier, O., Pajović, J., Đoković, V.,& Nahon, L.. (2020). Velocity Map Imaging VUV Angle-Resolved Photoemission on Isolated Nanosystems: Case of Gold Nanoparticles. in The Journal of Physical Chemistry C, 124(44), 24500-24512.
https://doi.org/10.1021/acs.jpcc.0c08152

Božanić DK, Garcia GA, Sublemontier O, Pajović J, Đoković V, Nahon L. Velocity Map Imaging VUV Angle-Resolved Photoemission on Isolated Nanosystems: Case of Gold Nanoparticles. in The Journal of Physical Chemistry C. 2020;124(44):24500-24512.
doi:10.1021/acs.jpcc.0c08152 .

Božanić, Dušan K., Garcia, Gustavo A., Sublemontier, Olivier, Pajović, Jelena, Đoković, Vladimir, Nahon, Laurent, "Velocity Map Imaging VUV Angle-Resolved Photoemission on Isolated Nanosystems: Case of Gold Nanoparticles" in The Journal of Physical Chemistry C, 124, no. 44 (2020):24500-24512,
https://doi.org/10.1021/acs.jpcc.0c08152 . .