Reference XPS spectra of amino acids

0541813 - FZÚ 2022 RIV GB eng C - Conference Paper (international conference)
Artemenko, Anna - Shchukarev, A. - Štenclová, Pavla - Wågberg, T. - Segervald, J. - Jia, X. - Kromka, Alexander
Reference XPS spectra of amino acids.
IOP Conference Series: Materials Science and Engineering. Vol. 1050. Bristol: IOP Publishing Ltd, 2021 - (Kozisek, Z.; Behulova, Z.; Potucek, Z.), č. článku 012001. ISSN 1757-8981.
[Joint Seminar on Development of Materials Science in Research and Education /30./ DMSRE 2020. Pavlov (CZ), 07.09.2020-11.09.2020]
R&D Projects: GA MŠMT(CZ) EF18_053/0016627; GA ČR(CZ) GJ20-00925Y; GA MŠMT LM2018110
Grant - others:OP VVV - Mobility FZU 2(XE) CZ.02.2.69/0.0/0.0/18_053/0016627
Institutional support: RVO:68378271
Keywords : XPS * amino acid * surface chemistry
OECD category: Condensed matter physics (including formerly solid state physics, supercond.)

In this report we present XPS data for five amino acids (AAs) (tryptophan, methionine, glutamine, glutamic acid, and arginine) with different side chain groups measured in solid state (powder form). The theoretically and experimentally obtained chemical structure of AAs are compared. Here, we analyse and discuss C 1 s, N 1 s, O 1s and S 2p core level binding energies, FWHMs, atomic concentrations of the functional groups in AAs. The experimentally obtained and theoretically calculated ratio of atomic concentrations are compared. The zwitterionic nature of methionine and glutamine in solid state was determined from protonated amino groups in N 1s peak and deprotonated carboxylic groups in the C 1s spectrum. The obtained XPS results for AAs well corresponds with previously reported data.
Permanent Link: http://hdl.handle.net/11104/0319339