16 research outputs found
Picosecond dynamics of photoinduced electron transfer involving singlet and triplet states in nitroporphyrin molecules
No full textPhosphorescence studies of Pt(thpy)2 complex for use in single molecule spectroscopy
No full textThe 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
Spectral manifestations of the splitting of the lowest triplet levels in Pd complexes of nonsymmetric porphyrins
No full textPhotoinduced relaxation processes in complexes based on semiconductor CdSe nanocrystals and organic molecules
No full textOptical properties of chlorophyll a and β-Carotene mixtures adsorbed on bovine serum albumin
No full textFormation of intersystem crossing transitions in Pd(II) and Pt(II) porphyrins: Nonplanar distortions of the macrocycle and charge transfer states
No full textManifestation of nonplanarity effects and charge-transfer interactions in spectral and kinetic properties of triplet states of sterically strained octaethylporphyrins
No full textThe influence of electronic and structural factors on the photoinduced electron transfer in sterically strained meso-nitrophenyl-substituted porphyrins
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Photoinduced electron transfer in meso-nitrophenyl-substituted porphyrins and their chemical dimers
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