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Perchanova M, Kurreck H, Berg A. Time-Resolved Electron Paramagnetic Resonance Study of Photoinduced Electron Transfer in Pd Porphyrin–Quinone and Zn Porphyrin–Quinone Dyads with a Cyclohexylene Spacer. J Phys Chem A 2015; 119:8117-24. [DOI: 10.1021/acs.jpca.5b04760] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Maya Perchanova
- Institute
of Chemistry, The Hebrew University of Jerusalem, Jerusalem 91904, Israel
| | - Harry Kurreck
- Institute of Chemistry and Biochemistry-Organic
Chemistry, Free University Berlin, Takustrasse 3, D-14195 Berlin, Germany
| | - Alexander Berg
- Institute
of Chemistry, The Hebrew University of Jerusalem, Jerusalem 91904, Israel
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2
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Savitsky A, Möbius K. Photochemical Reactions and Photoinduced Electron-Transfer Processes in Liquids, Frozen Solutions, and Proteins as Studied by Multifrequency Time-Resolved EPR Spectroscopy. Helv Chim Acta 2006. [DOI: 10.1002/hlca.200690232] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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4
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Berg A, Shuali Z, Levanon H, Wiehe A, Kurreck H. Structure Dependence of Electron Spin Polarization in Zn−Porphyrin−Quinone Ensembles Oriented in a Liquid Crystal. J Phys Chem A 2001. [DOI: 10.1021/jp0119227] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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5
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Mori Y, Sakaguchi Y, Hayashi H. Spin Chemical Approach towards Long-Lived Charge-Separated States Generated by Photoinduced Intramolecular Electron Transfer in a Donor–Bridge–Acceptor System. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 2001. [DOI: 10.1246/bcsj.74.293] [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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6
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Fuhs M, Elger G, Mobius K, Osintsev A, Popov A, Kurreck H. Multifrequency time-resolved EPR (9.5GHz and 95GHz) on covalently linked porphyrin-quinone model systems for photosynthetic electron transfer: effect of molecular dynamics on electron spin polarization. Mol Phys 2000. [DOI: 10.1080/00268970050052079] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/16/2022]
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Dixon DW, Thornton NB, Steullet V, Netzel T. Effect of DNA Scaffolding on Intramolecular Electron Transfer Quenching of a Photoexcited Ruthenium(II) Polypyridine Naphthalene Diimide. Inorg Chem 1999; 38:5526-5534. [PMID: 11671280 DOI: 10.1021/ic971446s] [Citation(s) in RCA: 39] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
Intramolecular emission quenching of a photoexcited ruthenium(II) polypyridine by a covalently linked naphthalene diimide (NDI) has been measured in aqueous buffer both without and with calf thymus DNA. The complex consists of a Ru(2,2'-bipyridine)(2)(2,2'-bipyridine-5-carboxamide)(2+) electron donor covalently attached by way of a -CH(2)CH(2)CH(2)- linker to a 1,4,5,8-naphthalene diimide acceptor (Ru-NDI, 1). The NDI portion of the complex intercalates in calf thymus DNA, as indicated by the hypochromism of its optical absorbance bands and observation of an induced circular dichroism spectrum in the same region. Emission quenching in Ru-NDI has been measured relative to a Ru tris-bpy model lacking the NDI moiety by both lifetime and emission quantum yield techniques. Using lifetime averages, the relative emission quenching is, respectively, 99.1% and 97.9% in aqueous buffer solutions without and with DNA. The emission quenching is ascribed to intramolecular electron transfer within the Ru-NDI complex with an estimated driving force (-DeltaG degrees ) of 0.33 eV. In buffer, the emission decays of Ru-NDI alone are fit well with a triexponential model with lifetimes of 0.34 (0.88), 1.99 (0.11), and 12.6 (0.008) ns (relative amplitude). The emission decays of the DNA-intercalated Ru-NDI complex are also fit well with a triexponential model with lifetimes of 0.31 (0.79), 2.00 (0.13), and 11.8 (0.08) ns. Thus, the fractional amplitudes of the lifetimes change upon DNA intercalation of the complex, while the lifetimes themselves remain essentially the same. The average rates of electron transfer in aqueous buffer without and with DNA are, respectively, 1.6 x 10(9) and 6.8 x 10(8) s(-)(1). The striking result of this study is that the overall character of electron transfer quenching in Ru-NDI is very similar whether or not it is bound to DNA. Intercalation of the NDI in DNA apparently has negligible consequences for electron transfer, implying either that the activation energy and electronic coupling in Ru-NDI are largely unaffected by this, at first glance, seemingly significant environmental change or that changes in these parameters on DNA binding cancel fortuitously.
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Affiliation(s)
- Dabney W. Dixon
- Department of Chemistry, Georgia State University, Atlanta, Georgia 30303
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Elger G, Wiehe A, Möbius K, Kurreck H. Time-Resolved EPR Study of Electron Transfer in a Covalently Linked Porphyrin-Quinone-Quinone Triad. Z PHYS CHEM 1999. [DOI: 10.1524/zpch.1999.213.part_2.181] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Affiliation(s)
- G. Elger
- Free University Berlin, Institute of Experimental Physics, Arnimallee 14, D-14195 Berlin, Germany
| | - A. Wiehe
- Free University Berlin, Institute of Organic Chemistry, Takustr. 3, D-14195 Berlin, Germany
| | - K. Möbius
- Free University Berlin, Institute of Experimental Physics, Arnimallee 14, D-14195 Berlin, Germany
| | - H. Kurreck
- Free University Berlin, Institute of Organic Chemistry, Takustr. 3, D-14195 Berlin, Germany
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Korth O, Wiehe A, Kurreck H, Röder B. Photoinduced intramolecular electron transfer in covalently linked porphyrin–triptycene–(bis)quinone diads and triads. Chem Phys 1999. [DOI: 10.1016/s0301-0104(99)00111-1] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/16/2022]
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10
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ELGER G, FUHS M, MÜLLER P, GERSDORFF JV, WIEHE A, KURRECK H, MÖBIUS K. Time-resolved EPR studies of photoinduced electron transfer reactions in photosynthetic model porphyrin quinone triads. Mol Phys 1998. [DOI: 10.1080/00268979809483261] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Hutchison KA, Hasharoni K, Wudl F, Berg A, Shuali Z, Levanon H. A Time-Resolved EPR Study of a New Zwitterion Undergoing Photoinduced Intramolecular Electron Transfer. J Am Chem Soc 1998. [DOI: 10.1021/ja974018u] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Katherine A. Hutchison
- Contribution from the Department of Materials, University of California at Santa Barbara, Santa Barbara, California 93106, Department of Chemistry, University of California at Los Angeles, Los Angeles, California 90095, and Department of Physical Chemistry and the Farkas Center for Light Induced Processes, The Hebrew University of Jerusalem, Jerusalem 91904, Israel
| | - Kobi Hasharoni
- Contribution from the Department of Materials, University of California at Santa Barbara, Santa Barbara, California 93106, Department of Chemistry, University of California at Los Angeles, Los Angeles, California 90095, and Department of Physical Chemistry and the Farkas Center for Light Induced Processes, The Hebrew University of Jerusalem, Jerusalem 91904, Israel
| | - Fred Wudl
- Contribution from the Department of Materials, University of California at Santa Barbara, Santa Barbara, California 93106, Department of Chemistry, University of California at Los Angeles, Los Angeles, California 90095, and Department of Physical Chemistry and the Farkas Center for Light Induced Processes, The Hebrew University of Jerusalem, Jerusalem 91904, Israel
| | - Alexander Berg
- Contribution from the Department of Materials, University of California at Santa Barbara, Santa Barbara, California 93106, Department of Chemistry, University of California at Los Angeles, Los Angeles, California 90095, and Department of Physical Chemistry and the Farkas Center for Light Induced Processes, The Hebrew University of Jerusalem, Jerusalem 91904, Israel
| | - Zohar Shuali
- Contribution from the Department of Materials, University of California at Santa Barbara, Santa Barbara, California 93106, Department of Chemistry, University of California at Los Angeles, Los Angeles, California 90095, and Department of Physical Chemistry and the Farkas Center for Light Induced Processes, The Hebrew University of Jerusalem, Jerusalem 91904, Israel
| | - Haim Levanon
- Contribution from the Department of Materials, University of California at Santa Barbara, Santa Barbara, California 93106, Department of Chemistry, University of California at Los Angeles, Los Angeles, California 90095, and Department of Physical Chemistry and the Farkas Center for Light Induced Processes, The Hebrew University of Jerusalem, Jerusalem 91904, Israel
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Time-Resolved EPR Study of Electron Transfer in a Covalently Linked Porphyrin-Quinone-Quinone Triad. Z PHYS CHEM 1998. [DOI: 10.1524/zpch.1998.1.1.381] [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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