Zobrazeno 1 - 10
of 11
pro vyhledávání: '"Ravil' N Nurmukhametov"'
Autor:
S. A. Khatipov, D. I. Seliverstov, S.T. Sychkova, V. G. Klimenko, Ravil' N Nurmukhametov, T. V. Sakhno, Yuriy Sakhno
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms. 269:2600-2604
Spectral characteristics of absorption and fluorescence of the optical centers formed in PTFE during gamma-irradiation near its melting temperature have been established. It was determined, that the different optical centers are responsible for the f
Publikováno v:
Journal of Applied Spectroscopy. 78:512-517
Fluorescent properties and colors of polytetrafluoroethylene (PTFE) samples were studied as functions of absorbed dose of γ-radiation at a temperature above the melting temperature of the crystallites (327°C) in the dose range 0.2–0.8 MGy. The sa
Autor:
Sergei A. Khatipov, Yuriy Sakhno, T. V. Sakhno, Ravil' N Nurmukhametov, Denis Seliverstov, Vasiliy Klimenko
Publikováno v:
Radiation Physics and Chemistry. 80:522-528
Radiation-modified polytetrafluoroethylene (PTFE), which exhibits intense fluorescence in the visible spectral region, was prepared. Radiation modification was performed with 60Co rays at 330 °C, at a dose of 0.2 MGy and an atmospheric air pressure
Publikováno v:
Polymer Science Series A. 50:1226-1232
Spectral-luminescent analysis has shown that γ-irradiation of bulky PTFE samples (blocks) in the range 330–340°C initiates generation of the same optical centers as in thin films. The irradiated samples become fluorescent and acquire a color rang
Publikováno v:
Polymer Science Series A. 48:153-158
Radiation-modified polytetrafluoroethylene (PTFE) that exhibited intense fluorescence in the visible spectral region was prepared. Radiation modification was performed with 60Co γ rays at 330°C, a dose of 0.2 MGy, and an atmospheric air pressure ra
Publikováno v:
Russian Chemical Reviews. 69:1037-1056
Published data on the optical spectra and theoretical investigations of dioxins, polychlorinated derivatives of dibenzo-p-dioxin, which are well-known environmental toxins, are generalised. The geometrical and electronic structures of the molecules a
Publikováno v:
Polymer. 37:1109-1116
Synchronous scanning over a range of excitation wavelengths and fluorescence measurements were used to study polystyrene, solid solutions of luminophores in poly(methyl methacrylate (PMMA), and methyl methacrylate copolymers doped with pyrene, anthra
Publikováno v:
Russian Chemical Reviews. 62:539-552
Studies devoted to excimers in organic systems are surveyed. Processes leading to the excitation of the excimer luminescence are examined. Examples of the excimer-like glow of dimers are described. The relation between the structure of the complexes
Publikováno v:
ChemInform. 32
Published data on the optical spectra and theoretical investigations of dioxins, polychlorinated derivatives of dibenzo-p-dioxin, which are well-known environmental toxins, are generalised. The geometrical and electronic structures of the molecules a
Autor:
Ravil' N Nurmukhametov
Publikováno v:
Russian Chemical Reviews. 36:693-709
CONTENTS I. General remarks 693 II. Characteristic features of bands due to electronic n–π* and π–π* transitions 694 III. Condensed aromatic heterocycles with one nitrogen atom 696 IV. Azabenzenes and polycyclic compounds with two or more nitr