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Nelson JN, Krzyaniak MD, Horwitz NE, Rugg BK, Phelan BT, Wasielewski MR. Zero Quantum Coherence in a Series of Covalent Spin-Correlated Radical Pairs. J Phys Chem A 2017; 121:2241-2252. [DOI: 10.1021/acs.jpca.7b00587] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Jordan N. Nelson
- Department of Chemistry and
Argonne−Northwestern Solar Energy Research (ANSER) Center, Northwestern University, Evanston, Illinois 60208-3113, United States
| | - Matthew D. Krzyaniak
- Department of Chemistry and
Argonne−Northwestern Solar Energy Research (ANSER) Center, Northwestern University, Evanston, Illinois 60208-3113, United States
| | - Noah E. Horwitz
- Department of Chemistry and
Argonne−Northwestern Solar Energy Research (ANSER) Center, Northwestern University, Evanston, Illinois 60208-3113, United States
| | - Brandon K. Rugg
- Department of Chemistry and
Argonne−Northwestern Solar Energy Research (ANSER) Center, Northwestern University, Evanston, Illinois 60208-3113, United States
| | - Brian T. Phelan
- Department of Chemistry and
Argonne−Northwestern Solar Energy Research (ANSER) Center, Northwestern University, Evanston, Illinois 60208-3113, United States
| | - Michael R. Wasielewski
- Department of Chemistry and
Argonne−Northwestern Solar Energy Research (ANSER) Center, Northwestern University, Evanston, Illinois 60208-3113, United States
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2
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Time-Resolved Electron Paramagnetic Resonance Spectroscopy. ADVANCES IN PHYSICAL ORGANIC CHEMISTRY 2013. [DOI: 10.1016/b978-0-12-407754-6.00001-6] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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3
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Solvent Effects on Photoinduced Electron Transfer; A Fourier Transform-Electron Paramagnetic Resonance Study*. Z PHYS CHEM 2011. [DOI: 10.1524/zpch.1992.1.part_2.089] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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4
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Hanaishi R. Stochastic Liouville equation studies of FT-EPR spectra of singlet-triplet mixing photo-chemically generated radical pair system. JOURNAL OF MAGNETIC RESONANCE (SAN DIEGO, CALIF. : 1997) 2008; 193:119-126. [PMID: 18486510 DOI: 10.1016/j.jmr.2008.04.032] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/03/2007] [Revised: 03/27/2008] [Accepted: 04/23/2008] [Indexed: 05/26/2023]
Abstract
A stochastic Liouville equation (SLE) was numerically solved to obtain pulsed Fourier-transform (FT) EPR spectra on a radical pair system created in a photo-induced chemical reaction. Numerical calculations were applied to the photo-chemical reaction of deuterated acetone and 2-propanol at low temperatures. In this reaction system, the antiphase structures of the EPR signals, so called spin-correlated radical pair (SCRP) signals of two identical isopropyl ketyl radicals and spin-polarized free isopropyl ketyl radicals were observed by FT-EPR and continuous wave time-resolved (CW TR) EPR techniques. In the present work, FT-EPR spectra of the antiphase structure signals of the radical pair themselves as well as spin-polarized free radical signals were simulated. Additionally, rising behavior of free radical signals polarized by the radical pair mechanism (RPM) was also clarified. Furthermore two-dimensional (2D) FT-EPR nutation spectra were simulated in the both cases with and without the radical pairs by the use of SLE. In these simulations, strong DC components in the nutation frequency dimension, were well reproduced as was obtained in experiments. It was shown that relaxation during the microwave pulse was essential for the appearance of the DC components.
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Kitahama Y, Sakaguchi Y. Viscosity Dependence of the Kinetic Parameters of the Radical Ion Pair in Homogeneous Solution Determined by Optically Detected X- and Ku-Band Electron Spin Resonance. J Phys Chem A 2007; 112:347-52. [DOI: 10.1021/jp076582p] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Yasutaka Kitahama
- RIKEN (The Institute of Physical and Chemical Research), 351-0198 Wako, Saitama, Japan
| | - Yoshio Sakaguchi
- RIKEN (The Institute of Physical and Chemical Research), 351-0198 Wako, Saitama, Japan
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Tarabek P, Bonifacić M, Beckert D. Time-resolved FT EPR and optical spectroscopy study on photooxidation of aliphatic alpha-amino acids in aqueous solutions; electron transfer from amino vs carboxylate functional group. J Phys Chem A 2007; 110:7293-302. [PMID: 16737283 DOI: 10.1021/jp060764m] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
Using time-resolved Fourier transform electron paramagnetic resonance, FT EPR, and optical spectroscopy, the photooxidation of glycine, alpha-alanine, alpha-aminoisobutyric acid, and model compounds beta-alanine, methylamine and sodium acetate, by excited triplets of anthraquinone-2,6-disulfonate dianion was studied in aqueous solutions in the pH range 5-13. Anthraquinone radical trianions showing strong emissive spin-polarization (CIDEP) were formed, indicating fast electron transfer from the quenchers to the spin-polarized quinone triplet as the primary reaction. None of the primary radicals formed upon one-electron oxidation of quenchers could be detected at the nanosecond time scale of FT EPR measurements because of their very fast transformation into secondary products. The latter were identified to be decarboxylated alpha-aminoalkyl radicals for alpha-amino acids anions and zwitterions, beta-aminoalkyl radicals for beta-alanine zwitterions, and methyl radicals for acetate anions; corresponding aminyl radicals were the first EPR detectable products from beta-alanine anions and methylamine. Thus, anthraquinone-2,6-disulfonate triplet can take an electron from both NH(2)- and -CO(2)(-) functional groups forming aminium ((+*)NH(2)-) and acyloxyl (-CO(2)(*)) radicals, respectively. Aminium radicals derived from beta-alanine anions and CH(3)-NH(2) stabilize by deprotonation into aminyl radicals, whereas these derived from alpha-amino acids anions are known to suffer ultrafast decarboxylation (tau approximately 10 ps). Analysis of the polarization patterns revealed that decarboxylation from acyloxyl radicals are considerably slower (ns < tau < 0.1 micros). Therefore, in the case of alpha-amino acids, the isoelectronic structures NH(2)-CR(2)-CO(2)(*) and (+*)NH(2)-CR(2)-CO(2)(-) probably do not constitute resonance mesomeric forms of one and the same species and the decarboxylation of aminium radicals is not preceded by the intramolecular carboxylate to amino group electron transfer. Absolute triplet quenching rate constants at zero ionic strength were in the range of 2 x 10(8) to 2 x 10(9) M(-1) s(-1) for R-NH(2) and 2 x 10(7) to 10(8) M(-1) s(-1) for R-CO(2)(-) type of electron donors, reflecting in principle their standard reduction potentials. The strengths of acids: (+)NH(3)-(*)CH(2), (+)NH(3)-(*)C(CH(3))H, and (+)NH(3)-(*)C(CH(3))(2), pK(a) <4, >6, and >7, respectively, were found to be remarkably strongly dependent on alpha-C substitution. The conjugate bases of these alpha-aminoalkyl radicals reduce anthraquinone-2,6-disulfonate dianion ground state with k(sec) = 3 x 10(9) M(-1) s(-1).
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Affiliation(s)
- Peter Tarabek
- Interdisciplinary Research Group Time-Resolved Spectroscopy, Faculty of Chemistry and Mineralogy, University of Leipzig, Germany
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Yamauchi S. Recent Developments in Studies of Electronic Excited States by Means of Electron Paramagnetic Resonance Spectroscopy. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 2004. [DOI: 10.1246/bcsj.77.1255] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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8
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9
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Spin-chemical approach to photochemistry: reaction control by spin quantum operation. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY C-PHOTOCHEMISTRY REVIEWS 2003. [DOI: 10.1016/s1389-5567(02)00038-2] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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10
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Akiyama K, Tero-Kubota S. One- and Two-Dimensional EPR Studies on the Radical Pair Generated by the Photoreduction of 9,10-Anthraquinone-1,5-disulfonate in Aerosol OT Reverse Micelles. J Phys Chem B 2002. [DOI: 10.1021/jp0155157] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Kimio Akiyama
- Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, Sendai 980-8577, Japan
| | - Shozo Tero-Kubota
- Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, Sendai 980-8577, Japan
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11
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Abstract
Photoprocesses associated with the complexation of a pyridine-functionalized C60 fullerene derivative to ruthenium- and zinc-tetraphenylporphyrins (tpp) have been studied by time-resolved optical and transient EPR spectroscopies. It has been found that upon irradiation in toluene, a highly efficient triplet-triplet energy transfer governs the deactivation of the photoexcited [Ru(tpp)], while electron transfer (ET) from the porphyrin to the fullerene prevails in polar solvents. Complexation of [Zn(tpp)] by the fullerene derivative is reversible and, following excitation of the [Zn(tpp)], gives rise to very efficient charge separation. In fluid polar solvents such as THF and benzonitrile, radical-ion pairs (RPs) are generated both by intramolecular ET inside the complex and by intermolecular ET in the uncomplexed form. Charge-separated states have lifetimes of about 10 micros in THF and several hundred of microseconds in benzonitrile at room temperature.
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Affiliation(s)
- T Da Ros
- Dipartimento di Scienze Farmaceutiche, Università di Trieste, Italy
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12
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Neufeld AA, Pedersen JB. The spectral forms of transient ESR spectra of radical pairs and the origin of the antiphase structure. J Chem Phys 2000. [DOI: 10.1063/1.481947] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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13
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Kobori Y, Sekiguchi S, Akiyama K, Tero-Kubota S. Chemically Induced Dynamic Electron Polarization Study on the Mechanism of Exchange Interaction in Radical Ion Pairs Generated by Photoinduced Electron Transfer Reactions. J Phys Chem A 1999. [DOI: 10.1021/jp990359d] [Citation(s) in RCA: 95] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Affiliation(s)
- Yasuhiro Kobori
- Institute for Chemical Reaction Science, Tohoku University, Sendai, 980-8577, Japan, and PRESTO, Japan Science and Technology Corporation (JST), Kawaguchi, Japan
| | - Shinji Sekiguchi
- Institute for Chemical Reaction Science, Tohoku University, Sendai, 980-8577, Japan, and PRESTO, Japan Science and Technology Corporation (JST), Kawaguchi, Japan
| | - Kimio Akiyama
- Institute for Chemical Reaction Science, Tohoku University, Sendai, 980-8577, Japan, and PRESTO, Japan Science and Technology Corporation (JST), Kawaguchi, Japan
| | - Shozo Tero-Kubota
- Institute for Chemical Reaction Science, Tohoku University, Sendai, 980-8577, Japan, and PRESTO, Japan Science and Technology Corporation (JST), Kawaguchi, Japan
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14
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Fukuju T, Yashiro H, Maeda K, Murai H. Real-time observation of the singlet–triplet dephasing effect on the spin dynamics of the spin-correlated radical pair formed in the photolysis of tetraphenylhydrazine in a micelle. Chem Phys Lett 1999. [DOI: 10.1016/s0009-2614(99)00320-6] [Citation(s) in RCA: 22] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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15
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Neufeld AA, Pedersen JB. On the mechanism of antiphase electron spin resonance spectra of radical pairs. J Chem Phys 1998. [DOI: 10.1063/1.477541] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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16
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Fukuju T, Yashiro H, Maeda K, Murai H, Azumi T. Singlet-Born SCRP Observed in the Photolysis of Tetraphenylhydrazine in an SDS Micelle: Time Dependence of the Population of the Spin States. J Phys Chem A 1997. [DOI: 10.1021/jp971620y] [Citation(s) in RCA: 32] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Tadahiro Fukuju
- Department of Chemistry, Graduate School of Science, Tohoku University, Sendai 980-77, Japan
| | - Haruhiko Yashiro
- Department of Chemistry, Graduate School of Science, Tohoku University, Sendai 980-77, Japan
| | - Kiminori Maeda
- Department of Chemistry, Graduate School of Science, Tohoku University, Sendai 980-77, Japan
| | - Hisao Murai
- Department of Chemistry, Graduate School of Science, Tohoku University, Sendai 980-77, Japan
| | - Tohru Azumi
- Department of Chemistry, Graduate School of Science, Tohoku University, Sendai 980-77, Japan
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Stehlik D, Möbius K. NEW EPR METHODS FOR INVESTIGATING PHOTOPROCESSES WITH PARAMAGNETIC INTERMEDIATES. Annu Rev Phys Chem 1997; 48:745-84. [PMID: 15012455 DOI: 10.1146/annurev.physchem.48.1.745] [Citation(s) in RCA: 103] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
▪ Abstract Some of the significant advances in time-resolved multifrequency electron paramagnetic resonance (EPR) methods are reviewed, with the explicit focus on studies of light-driven processes and photoreactions in real time. Prominent examples are excited state electron transfer reactions with transient charge-separated radical pairs playing a central role. Paramagnetic intermediates and products are key functional states; thus EPR is the method of choice for their characterization. Photogenerated spin polarization and coherences as process-inherent features add the practical advantage of compensation in the trade-off between sensitivity and time resolution. Additionally, they provide detailed structural and dynamic information on the photoreactive system. Significance and specificity of the results achieved for charge separation in photosynthetic reaction centers and donor-acceptor model complexes indicate highly promising perspectives in photochemical research.
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Affiliation(s)
- D Stehlik
- Department of Physics, Free University Berlin, Arnimallee 14, D-14195 Berlin, Germany.
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Mizuochi N, Ohba Y, Yamauchi S. A Two-Dimensional EPR Nutation Study on Excited Multiplet States of Fullerene Linked to a Nitroxide Radical. J Phys Chem A 1997. [DOI: 10.1021/jp971569y] [Citation(s) in RCA: 61] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Norikazu Mizuochi
- Institute for Chemical Reaction Science, Tohoku University, Katahira 2-1-1, Sendai 980-77, Japan
| | - Yasunori Ohba
- Institute for Chemical Reaction Science, Tohoku University, Katahira 2-1-1, Sendai 980-77, Japan
| | - Seigo Yamauchi
- Institute for Chemical Reaction Science, Tohoku University, Katahira 2-1-1, Sendai 980-77, Japan
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Nakagawa K, Katsuki A, Tero-Kubota S, Tsuchihashi N, Fujita T. FT EPR Study of the Hydrated Electron Generated by Laser Excitation of Phenothiazine in Quinone-SDS Micellar Systems. J Am Chem Soc 1996. [DOI: 10.1021/ja953490h] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Kouichi Nakagawa
- Contribution from the Department of Chemistry, University of Massachusetts at Boston, 100 Morrissey Blvd, Boston, Massachusetts, 02125-3393, Institute for Chemical Reaction Science, Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai, 980-77, Japan, and Radio Isotope Center, Fukushima Medical College, 1 Hikarigaoka, Fukushima-shi, 960-12, Japan
| | - Akio Katsuki
- Contribution from the Department of Chemistry, University of Massachusetts at Boston, 100 Morrissey Blvd, Boston, Massachusetts, 02125-3393, Institute for Chemical Reaction Science, Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai, 980-77, Japan, and Radio Isotope Center, Fukushima Medical College, 1 Hikarigaoka, Fukushima-shi, 960-12, Japan
| | - Shozo Tero-Kubota
- Contribution from the Department of Chemistry, University of Massachusetts at Boston, 100 Morrissey Blvd, Boston, Massachusetts, 02125-3393, Institute for Chemical Reaction Science, Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai, 980-77, Japan, and Radio Isotope Center, Fukushima Medical College, 1 Hikarigaoka, Fukushima-shi, 960-12, Japan
| | - Nobuaki Tsuchihashi
- Contribution from the Department of Chemistry, University of Massachusetts at Boston, 100 Morrissey Blvd, Boston, Massachusetts, 02125-3393, Institute for Chemical Reaction Science, Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai, 980-77, Japan, and Radio Isotope Center, Fukushima Medical College, 1 Hikarigaoka, Fukushima-shi, 960-12, Japan
| | - Teizo Fujita
- Contribution from the Department of Chemistry, University of Massachusetts at Boston, 100 Morrissey Blvd, Boston, Massachusetts, 02125-3393, Institute for Chemical Reaction Science, Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai, 980-77, Japan, and Radio Isotope Center, Fukushima Medical College, 1 Hikarigaoka, Fukushima-shi, 960-12, Japan
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Hanaishi R, Ohba Y, Yamauchi S, Iwaizumi M. 1D and 2D FT-EPR Studies on the Photoinduced Electron Transfer Reaction from Zn Porphyrin to Duroquinone in CTAC Micellar Solution. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 1996. [DOI: 10.1246/bcsj.69.1533] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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21
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Katsuki A, Akiyama K, Tero-Kubota S. Echo FT-EPR Study of the Photochemical Reduction and Oxidation Reactions of 2,5-Di-t-butyl-1,4-benzoquinone and 2,5-Di-t-butylhydroquinone by Xanthene Dyes. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 1995. [DOI: 10.1246/bcsj.68.3383] [Citation(s) in RCA: 21] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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22
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Hirota N, Tominaga K, Yamauchi S. Chemically Induced Dynamic Electron Polarization Studies of Photochemical Reactions: Acetone in 2-Propanol and Triethylamine. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 1995. [DOI: 10.1246/bcsj.68.2997] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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23
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Hanaishi R, Ohba Y, Akiyama K, Yamauchi S, Iwaizumi M. Observation of spin‐correlated radical pairs via two‐dimensional electron paramagnetic resonance nutation spectroscopy. J Chem Phys 1995. [DOI: 10.1063/1.470616] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Adrian FJ. Dynamic level‐crossing model of antiphase electron spin polarization in spin‐correlated radical pairs. J Chem Phys 1995. [DOI: 10.1063/1.469490] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Tan J, Thurnauer MC, Norris JR. Electron spin echo envelope modulation due to exchange and dipolar interactions in a spin-correlated radical pair. Chem Phys Lett 1994. [DOI: 10.1016/0009-2614(94)87059-4] [Citation(s) in RCA: 75] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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27
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Shushin A, Boiden Pedersen J, Lolle LI. An analytical and numerical investigation of multiplet CIDEP. Chem Phys 1993. [DOI: 10.1016/0301-0104(93)80183-a] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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28
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Chemically Induced Dynamic Electron Polarization in Photogenerated Acetone Ketyl Radicals; A Fourier Transform-Electron Paramagnetic Resonance Study*. Z PHYS CHEM 1993. [DOI: 10.1524/zpch.1993.180.part_1_2.033] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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29
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Ebersole M, van Willigen H. Solvent Effects on Photoinduced Electron Transfer; A Fourier Transform-Electron Paramagnetic Resonance Study*. Z PHYS CHEM 1993. [DOI: 10.1524/zpch.1993.182.part_1_2.089] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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30
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Fourier transform-EPR studies of photoinduced electron transfer in homogeneous and micellar solutions. J CHEM SCI 1992. [DOI: 10.1007/bf02839114] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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31
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FT-EPR study of electron spin polarization in the acetone ketyl radical formed by photolysis of tert-butylperoxide in 2-propanol. Chem Phys Lett 1992. [DOI: 10.1016/0009-2614(92)85766-4] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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32
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Zilber G, Rozenshtein V, Rabinovitz M, Levanon H. Photoinduced electron transfer between doubly charged pyrene and alkali metals. Fourier transform EPR study. Chem Phys Lett 1992. [DOI: 10.1016/0009-2614(92)85964-c] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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33
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Levstein PR, van Willigen H. Chemically Induced Dynamic Electron Polarization in Photogenerated Acetone Ketyl Radicals; A Fourier Transform-Electron Paramagnetic Resonance Study*. Z PHYS CHEM 1992. [DOI: 10.1524/zpch.1992.1.part_1.033] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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35
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Levstein PR, van Willigen H. Photoinduced electron transfer from porphyrins to quinones in micellar systems: an FT-EPR study. Chem Phys Lett 1991. [DOI: 10.1016/0009-2614(91)80274-2] [Citation(s) in RCA: 27] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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36
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Levstein PR, van Willigen H. Fourier transform‐electron paramagnetic resonance study of the photochemical reaction of acetone with 2‐propanol. J Chem Phys 1991. [DOI: 10.1063/1.461098] [Citation(s) in RCA: 73] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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