Zusammenfassung
The spectral and kinetic characteristics of the complex Pt(thpy)2 (thpy− is the doubly protonated form of 2-(2-thienyl)pyridine) in solid and liquid solutions are studied. It is found that this compound phosphoresces intensively in the temperature range 4.2–293 K. The effects of temperature and molecular oxygen on the photophysical parameters of the complex are studied. It is shown that the ...
Zusammenfassung
The spectral and kinetic characteristics of the complex Pt(thpy)2 (thpy− is the doubly protonated form of 2-(2-thienyl)pyridine) in solid and liquid solutions are studied. It is found that this compound phosphoresces intensively in the temperature range 4.2–293 K. The effects of temperature and molecular oxygen on the photophysical parameters of the complex are studied. It is shown that the phosphorescence of the Pt(thpy)2 complex is efficiently quenched by molecular oxygen, with the quenching rate constant being equal to k q = (2.2–5.1) × 109 (M s)−1. Under direct selective excitation of the complex in isotropic media at 4.2 K via the channel S 0 → T 1, fine structure phosphorescence spectra are observed.
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