Zobrazeno 1 - 10
of 52
pro vyhledávání: '"M P, Tsvirko"'
Publikováno v:
Journal of Applied Spectroscopy. 87:789-795
The spectral and luminescent properties of new complexes of lutetium(III)–chloride with 5,10,15,20-tetraphenylporphine and its mono-nitrophenyl derivative with a para-nitro group on one of the meso-phenyl rings were studied. The complexes showed we
Publikováno v:
Journal of Applied Spectroscopy. 81:678-683
A novel luminescent temperature sensor material fabricated by incorporating europium(III)-tris(thieno yltrifluoroacetonato)-(diantipyrylpropylmethane) (Eu-(tta)3dapm) into a cellulose triacetate (CTA) fi lm is reported. The temperature effect on the
Autor:
Yu. I. Atrasheuski, M. P. Tsvirko
Publikováno v:
Journal of Applied Spectroscopy. 79:553-558
Absolute quantum yields and luminescence lifetimes were measured for Eu, Tb, Gd, formates and Y formate activated by Eu3+ as functions of temperature, deuterium substitution in ligands, and Eu3+ concentration in Y formates. Radiative and nonradiative
Publikováno v:
High Energy Chemistry. 44:239-243
The feasibility of creation in biological membranes of artificial donor-acceptor systems, based on zinc porphyrins and halomethanes, capable of photoinduced electron transfer from excited porphyrin molecules to halomethane molecules has been shown. T
Publikováno v:
Journal of Analytical Chemistry. 63:840-843
The new luminescence method for determining dysprosium in the presence of terbium is developed based on the difference in the lifetimes of dysprosium and terbium in complexes with 3-(6-benzodioxanyl)pyrazole-5-carboxylic acid (τ = 6 and 910 μs, res
Publikováno v:
Journal of Applied Spectroscopy. 74:364-368
We have measured the relative luminescence quantum yields and luminescence lifetimes of Tb(III) and Dy(III) ions in complexes with pyrazole-5-carboxylic acids. Based on study of the time-resolved luminescence spectra of Tb(III) and Dy(III) complexes
Autor:
A. V. Stepanov, M. P. Tsvirko
Publikováno v:
Journal of Applied Spectroscopy. 71:462-468
A numerical simulation of the rate constants of the double proton transfer in the benzoic acid dimer at partial and complete deuteration of hydrogen bonds in the dimer as well as at different hydrostatic pressures applied to the sample has been carri
Autor:
M. P. Tsvirko, V. Ya. Venchikov
Publikováno v:
Journal of Applied Spectroscopy. 68:1036-1041
This paper considers the possibility of using tris-β-diketonate complexes of europium in polymethylmettacrylate as luminescent UV radiation converters for widening the range of spectral sensitivity of photodetectors (including TV ones). The absolute
Autor:
M. P. Tsvirko, V. Ya. Venchikov
Publikováno v:
Journal of Applied Spectroscopy. 68:473-479
The absolute quantum yield and duration of 5D → 7Fj luminescence of the Eu3+ ion in europium tris‐naphthoyltrifluoroacetonate has been measured on excitation of luminescence in the UV S0 → S1 absorption band of the ligand in the temperature ran
Autor:
M. P. Tsvirko, V. V. Gurinovich
Publikováno v:
Journal of Applied Spectroscopy. 68:110-117
The quantum yields of photooxidation of porphyrins, chlorophyll a, and β–carotene in diethyl ether in the presence of different concentrations of CCl4 in irradiation into the S0 → S1 absorption bands are determined. The quantum yields for deoxyg