Publikace na Přírodovědecká fakulta |
2020
Abstrakt
A series of cationic Pt(II) complexes with chelating bis-carbene and P,P- or P,S-ligands, viz. [(CC)Pt((XY)][BF4]2 (2a-e), where CC = methylenebis(3-methyl-1H-imidazol-1-yl-2-ylidene, and XY = Ph2PCH2CH2PPh2 (dppe) (a), Ph2P(CH2)3PPh2 (dppp) (b), 1,2-(Ph2P)2C6H4 (dppbz) (c), [Fe(eta(5)-C5H4PPh2)2] (dppf) (d), and Ph2PCH2CH2SPh (e), were synthesized and structurally characterized by NMR and MS spectroscopy and by single-crystal X-ray diffraction analysis. Furthermore, photophysical measurements showed that these compounds were non-emissive at room temperature.
However, when cooled to 77 K, compounds 2a, 2b and 2c showed weak luminescence in the near UV region with emission maxima in the 380-395 nm range.