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Long-range Electron Transfer Across Peptide Bridges: The Transition From Electron Superexchange To Hopping.

Rouba Abdel Malak, Z. Gao, J. Wishart, S. Isied
Published 2004 · Medicine, Chemistry

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Long-range electron transfer rate constants for complexes of the type [(bpy)2RuIIL-Pron-apyRuIII)(NH3)5]5++ proline residues (n) varying from 0 to 9 were determined by complementary electron pulse radiolysis and flash photolysis techniques from the picosecond to the millisecond time scales. The activationless kmax values from both techniques coalesce into one data set. The distance dependence of the reactions is consistent with a smooth transition from a superexchange mechanism with attenuation constant beta = 1.4 A-1 to a hopping mechanism with attenuation constant beta = 0.17 A-1. The transition occurs between n = 3 and 4 prolines, and the virtual hopping rate constant at the shortest distance is about 1 x 106 times slower than that observed for the superexchange value.



This paper is referenced by
10.1021/jz300008s
Electron Transfer Mechanism in Helical Peptides.
H. S. Mandal (2012)
10.1021/jp2086297
Charge transfer in model peptides: obtaining Marcus parameters from molecular simulation.
Alexander Heck (2012)
10.1021/JP306154X
Aromatic Residues Regulating Electron Relay Ability of S-Containing Amino Acids by Formations of S∴π Multicenter Three-Electron Bonds in Proteins
X. Chen (2012)
10.1021/ja907328r
Proteins as electronic materials: electron transport through solid-state protein monolayer junctions.
I. Ron (2010)
10.1016/J.CCR.2009.10.024
Importance of covalence, conformational effects and tunneling-barrier heights for long-range electron transfer: Insights from dyads with oligo-p-phenylene, oligo-p-xylene and oligo-p-dimethoxybenzene bridges
David Hanss (2010)
10.1002/CHEM.200500143
Peptide electron transfer: more questions than answers.
Yitao Long (2005)
10.1002/asia.200900072
Superior electron-transport ability of pi-conjugated redox molecular wires prepared by the stepwise coordination method on a surface.
Y. Nishimori (2009)
10.1002/anie.201507271
Charge Tunneling along Short Oligoglycine Chains.
Mostafa Baghbanzadeh (2015)
10.1016/j.cbpa.2008.08.026
Electron transfer in peptides and proteins.
B. Giese (2008)
10.1039/c3cc47885h
The effect of a macrocyclic constraint on electron transfer in helical peptides: a step towards tunable molecular wires.
Jingxian Yu (2014)
10.1073/pnas.1606779113
Tuning electronic transport via hepta-alanine peptides junction by tryptophan doping
Cunlan Guo (2016)
10.1039/B514853G
Photophysical properties of metal complexes
M. Ward (2005)
10.1021/ACS.JPCC.9B05149
Direct and Energy-Transfer-Mediated Charge-Transfer State Formation and Recombination in Triangulene-Spacer-Perylenediimide Multichromophores: Lessons for Photovoltaic Applications
A. H. Balawi (2019)
10.1002/9783527808175.CH19
Quantum Dynamics Effects in Photocatalysis
A. Nijamudheen (2018)
10.1039/C7RA07753J
A controllable mechanistic transition of charge transfer in helical peptides: from hopping to superexchange
Jingxian Yu (2017)
10.1039/c2cp41566f
A peptide loop and an α-helix N-terminal serving as alternative electron hopping relays in proteins.
Boran Han (2012)
10.1562/2005-04-29-RA-507
The Photochemistry of N-p-Toluenesulfonyl Peptides: The Peptide Bond as an Electron Donor
R. R. Hill (2005)
10.1088/0031-8949/88/06/068511
Future directions of μSR—laser excitation
K. Yokoyama (2013)
10.1021/acs.jpca.5b12532
Prevailing Photocurrent Generation of D-π-A Type Oligo(phenyleneethynylene) in Contact with Gold over Dexter-Type Energy-Transfer Quenching.
H. Uji (2016)
10.1246/CL.170655
Accordion-like Oscillation Mode of Helical Peptides Analyzed by Terahertz Time-domain Spectroscopy
T. Itagaki (2017)
10.1021/jp500839t
Different mechanisms for hole and electron transfer along identical molecular bridges: the importance of the initial state delocalization.
Natalie Gorczak (2014)
10.1002/cphc.201300901
Mimicking nature: a novel peptide-based bio-inspired approach for solar energy conversion.
E. Gatto (2014)
10.1021/acs.jpcb.5b02580
Electronic structure of hole-conducting states in polyprolines.
Nicolas P-A Monney (2015)
10.7282/T3Q52NDB
Physical chemistry of ionic liquids: structure and photochemical reactions
H. Lee (2012)
10.1002/ANGE.200601623
Distaler Ladungstransport in Peptiden
E. Schlag (2007)
10.1002/EJIC.200900396
Conformational Effects on Long‐Range Electron Transfer: Comparison of Oligo‐p‐phenylene and Oligo‐p‐xylene Bridges
David Hanss (2009)
10.1016/j.actbio.2018.01.007
Microbial nanowires - Electron transport and the role of synthetic analogues.
Rhiannon G Creasey (2018)
10.1002/9781118592403
Peptronics: Peptide Materials for Electron Transfer
E. Gatto (2013)
10.1021/ja1083859
Tunneling versus hopping in mixed-valence oligo-p-phenylenevinylene polychlorinated bis(triphenylmethyl) radical anions.
V. Lloveras (2011)
10.1016/J.CCR.2012.08.025
Bis(terpyridine) metal complex wires: Excellent long-range electron transfer ability and controllable intrawire redox conduction on silicon electrode
R. Sakamoto (2013)
10.1063/1.1938192
Density-functional molecular-dynamics study of the redox reactions of two anionic, aqueous transition-metal complexes.
Y. Tateyama (2005)
10.1038/s41467-019-13951-3
Mechanisms of triplet energy transfer across the inorganic nanocrystal/organic molecule interface
X. Luo (2020)
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