0612021 - ÚMCH 2026 RIV GB eng J - Journal Article
Tomšík, Elena - Černochová, Zulfiya - Scheibe, Magdalena Anna - Tadyszak, Krzysztof
Lithium phthalocyanine (gamma-structure) as a molecular oxygen sensor.
RSC Advances. Roč. 15, č. 5 (2025), s. 3738-3748. ISSN 2046-2069. E-ISSN 2046-2069
R&D Projects: GA MŠMT(CZ) LM2023053; GA MŠMT(CZ) LUAUS24272; GA MŠMT(CZ) EH22_008/0004607
Grant - others:AV ČR(CZ) StrategieAV21/26
Program: StrategieAV
Institutional support: RVO:61389013 ; RVO:61388955
Keywords : lithium phthalocyanine * electron paramagnetic resonance * molecular oxygen sensor
OECD category: Condensed matter physics (including formerly solid state physics, supercond.); Electrochemistry (dry cells, batteries, fuel cells, corrosion metals, electrolysis) (UFCH-W)
Impact factor: 4.6, year: 2024 ; AIS: 0.622, rok: 2024
Method of publishing: Open access
Result website:
https://pubs.rsc.org/en/content/articlelanding/2025/ra/d4ra08335kDOI: https://doi.org/10.1039/D4RA08335K

Synthesis and characterization of lithium phthalocyanine radicals were performed, which were followed by an investigation on its ability to detect oxygen levels in biologically relevant concentrations. EPR studies confirmed the presence of at least two phases, one sensitive to oxygenation (γ-phase) and the second one insensitive to oxygenation (α-phase). Contrary to the findings reported in the literature, it was observed that the γ-phase was not stable at and above 95 °C and slowly transformed into the α-phase crystallographic structure. Above 150 °C, only a broad signal of α-phase existed. Additional characterizations were performed using electrochemical impedance spectroscopy (EIS), cyclic voltammetry, dynamic light scattering (DLS), and Raman spectroscopy on pristine crystals Li2Pc and LiPc sensors.
Permanent Link: https://hdl.handle.net/11104/0363659
Research data: RSC Advances_Supplementary information