Výsledky vyhledávání - "Ayelet Regev"

Spin Dynamics of a 'Parachute' Shaped Fullerene−Porphyrin Dyad

Autor: Tamar Galili, David I. Schuster, Ayelet Regev, Dirk M. Guldi, Haim Levanon

Publikováno v: The Journal of Physical Chemistry A. 108:10632-10639

The electron spin dynamics associated with the photoinduced intramolecular electron transfer (ET) in a covalently linked malonate-strapped zinc porphyrin-fullerene (ZnP-C 6 0 ) dyad with "parachute" geometry was studied bytime-resolved electron param

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::189be69510c04745f5d0a0b6c6a04c20
https://doi.org/10.1021/jp0462310

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Determination of the Energy Levels of Radical Pair States in Photosynthetic Models Oriented in Liquid Crystals with Time-Resolved Electron Paramagnetic Resonance

Autor: Walter A. Svec, Tamar Galili, Michael R. Wasielewski, Gary P. Wiederrecht, Haim Levanon, Ayelet Regev

Publikováno v: Journal of the American Chemical Society. 120:6366-6373

We report the results of time-resolved electron paramagnetic resonance (TREPR) studies of photoinduced charge separation in a series of biomimetic supramolecular compounds dissolved in oriented liquid crystal solvents. The molecules contain a chlorop

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::8aa04fc5bbabf71d695242fcd8a73916
https://doi.org/10.1021/ja980409c

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Site selective electron paramagnetic resonance study of photoexcited chromium doped forsterite

Autor: Jack H. Freed, Ayelet Regev

Publikováno v: The Journal of Chemical Physics. 103:5315-5325

Time resolved electron paramagnetic resonance (EPR) measurements on a photoexcited chromium doped forsterite (Cr:Fo) single crystal are reported. The spectral changes with time, magnetic field, crystal orientation, microwave power and, in particular,

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::298a8531e2684d7a64bd62d0093c20aa
https://doi.org/10.1063/1.470566

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Structure of expanded porphyrins: electron-nuclear multiple resonance and molecular orbital studies of texaphyrin anion radicals in solution

Autor: Ayelet Regev, B. Endeward, Haim Levanon, Jonathan L. Sessler, Martin Plato, Klaus Möbius

Publikováno v: Chemical Physics Letters. 226:151-158

Liquid solution ENDOR and TRIPLE resonance experiments have been performed on texaphyrin radical anions generated by sodium reduction in tetrahydrofuran. Six proton and two nitrogen hyperfine couplings could be determined, including their signs. The

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::cf8dd5630c08ef017a9c3d4a9ef20c18
https://doi.org/10.1016/0009-2614(94)00694-6

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Triplet Dynamics of Conformationally Distorted Porphyrins: Time-Resolved Electron Paramagnetic Resonance

Autor: Craig J. Medforth, Jack Fajer, Ayelet Regev, Haim Levanon, Kathleen M. Barkigia, Tamar Galili, Kevin M. Smith

Publikováno v: The Journal of Physical Chemistry. 98:2520-2526

The photoexcited triplet states of the nonplanar porphyrins, free base and zinc 2,3,7,8,12,13,17,18-octaethyl-5,10,15,20-tetraphenylporphyri ns (OETPPs), were examined by laser excitation-time resolved EPR spectroscopy. Measurements were carried out

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::0c22898702530f54990a91e7194b1fa4
https://doi.org/10.1021/j100061a005

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Photoelectron transfer between a magnesium-free-base porphyrin heterodimer and duroquinone. Selective excitation and time-resolved EPR studies

Autor: Tamar Galili, Muhamad Hugerat, Chi K. Chang, Jack Fajer, Ayelet Regev, Haim Levanon

Publikováno v: The Journal of Physical Chemistry. 97:13198-13205

The photoexcited triplet state of a cofacial heterodimer, [Mg-H[sub 2]], comprised of Mg and H[sub 2] porphyrins, and photoinduced electron transfer (ET) between the heterodimer and duroquinone in 1:1 mixture of CH[sub 2]Cl[sub 2] ethanol were studie

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::c38c89e12136a99a4decbfa3f2a51543
https://doi.org/10.1021/j100152a026

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Triplet-state reactions of hypericin: time-resolved laser photolysis and electron paramagnetic resonance spectroscopy

Autor: Jehuda Feitelson, Albert Michaeli, Yehuda Mazur, Ayelet Regev, Haim Levanon

Publikováno v: The Journal of Physical Chemistry. 97:9154-9160

Hypericin (Hyp), a naphthodiantrone derivative carrying hydroxyl and methyl substituents, lately attracted much attention because of its possible use a therapeutic agent-especially against retroviral-induced diseases. Here, the excitcd triplet state

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::682419542bc35ee2ec2f15fc0cc02343
https://doi.org/10.1021/j100138a015

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Dynamics of triplet fullerene-60 probed by electron paramagnetic resonance. Motional analysis in isotropic and liquid crystalline matrixes

Autor: Shalom Michaeli, Ayelet Regev, Dan Gamliel, Haim Levanon, Vladimir Meiklyar

Publikováno v: The Journal of Physical Chemistry. 97:3671-3679

Detailed analysis of time-resolved electron paramagnetic resonance (EPR) line shapes of photocited triplet states of C[sub 60] in isotropic and anisotropic matrices has been carried out. Two main motional models have been tested over a very wide temp

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::380d497219a3dd2a0ce50f34e633bf0b
https://doi.org/10.1021/j100117a007

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