Zobrazeno 1 - 10
of 18
pro vyhledávání: '"I. A. Shkrob"'
Autor:
I. A. Shkrob
Publikováno v:
The Journal of Physical Chemistry A. 111:5223-5231
Density functional theory (DFT) is used to rationalize magnetic parameters of hydrated electron trapped in alkaline glasses as observed using Electron Paramagnetic Resonance (EPR) and Electron Spin Echo Envelope Modulation (ESEEM) spectroscopies. To
Autor:
Myran C. Sauer, I. A. Shkrob and
Publikováno v:
The Journal of Physical Chemistry B. 105:7027-7032
It is shown that high-mobility multimer (CO2)n•- anions in supercritical (sc)-CO2 form stable complexes with water, aliphatic alcohols, alkyl halides, and alkyl nitriles. The complexation rate is 1...
Autor:
Myran C. Sauer, I. A. Shkrob and
Publikováno v:
The Journal of Physical Chemistry B. 105:4520-4530
Time-resolved dc photoconductivity has been used to observe quasifree electrons and solvent radical anions in supercritical CO2 (ρc ≈ 0.468 g/cm3; Tc ≈ 31 °C). The electrons have lifetime τe 10 cm2/(V s). For ρ/ρc > 0.64, the product μeτe
Autor:
A. D. Trifunac, I. A. Shkrob
Publikováno v:
The Journal of Chemical Physics. 107:2374-2385
Time-resolved pulsed electron paramagnetic resonance (EPR) was used to study spin-polarized mobile H and D atoms in radiolysis of silica glass containing ∼1200 ppm of OH or OD groups. The EPR spectra of the H/D atoms indicate the occurrence of CIDE
Publikováno v:
The Journal of Physical Chemistry. 100:14681-14687
Fluorescence detected magnetic resonance (FDMR) is applied to study ion−molecule reactions in squalane (2,6,10,15,19,23-hexamethyltetracosane). Several time-resolved pulsed FDMR experiments are suggested to measure rate constants of scavenging by a
Autor:
A. D. Trifunac, I. A. Shkrob
Publikováno v:
The Journal of Chemical Physics. 103:551-561
Pulsed time‐resolved fluorescence detected magnetic resonance (FDMR) was applied to examine spin dynamics in radical ion pairs. Two time‐domain FDMR phenomena were examined; microwave‐induced quantum beats and the formation of the ‘‘echo’
Autor:
A. D. Trifunac, I. A. Shkrob
Publikováno v:
The Journal of Physical Chemistry. 99:11122-11130
Spin-echo and free induction decay (FID) detected electron paramagnetic resonance were applied to detect free D atoms in the pulse radiolysis of CD{sub 1} in liquid argon, krypton, xenon, and nitrogen at 77-160 K. The D atoms were polarized through c
Autor:
I. A. Shkrob, A. D. Trifunac
Publikováno v:
The Journal of Physical Chemistry. 98:13249-13261
Various mechanisms of geminate recombination in spin-correlated radical ion pairs produced by radiolysis of organic solids under cryogenic conditions are considered and compared with experimental data. Single-step electron tunneling and slow resonant
Autor:
I. A. Shkrob, A. D. Trifunac
Publikováno v:
The Journal of Physical Chemistry. 97:13298-13307
Observations of the time-resolved fluorescence-detected magnetic resonance (FDMR) from bridged radical ion pairs generated by pulse radiolysis of micellar aqueous and homogeneous alcohol solutions of poly(oxyethylene) (chain length 5-40) alkylphenyl
Publikováno v:
Journal of the American Chemical Society. 115:5227-5236
The 100-kHz and time-dependent TR ESR results on the photooxidation of 1,3,5-tris(3,5-di-tert-butyl-4-hydroxybenzyl)-2,4,6-trimethylbenzene (IOH) reveal that two radicals are formed. The experimental observations are consistent with the initial forma