scholarly journals Effect of Electronic Coupling on Electron Transfer Rates from Photoexcited Naphthalenediimide Radical Anion to Re(bpy)(CO)3X

2019 ◽  
Vol 123 (16) ◽  
pp. 10178-10190 ◽  
Author(s):  
Jose F. Martinez ◽  
Nathan T. La Porte ◽  
Subhajyoti Chaudhuri ◽  
Alessandro Sinopoli ◽  
Youn Jue Bae ◽  
...  
Keyword(s):  
Electron Transfer ◽  
Radical Anion ◽  
Electronic Coupling ◽  
Transfer Rates

Remote control of electronic coupling – modification of excited-state electron-transfer rates in Ru(tpy)2-based donor–acceptor systems by remote ligand design

2019 ◽  
Vol 55 (16) ◽  
pp. 2273-2276 ◽  
Author(s):  
Yusen Luo ◽  
Jens H. Tran ◽  
Maria Wächtler ◽  
Martin Schulz ◽  
Kevin Barthelmes ◽  
...  
Keyword(s):  
Electron Transfer ◽  
Excited State ◽  
Remote Control ◽  
Ligand Design ◽  
Electronic Coupling ◽  
Transfer Rates ◽  
State Electron ◽  
Donor Acceptor

Electronic coupling (HDA) underlying the electron transfer (ET) can be tuned by the remote substituents R.

The influence of bridge-reduced state levels on the electron transfer within the 2,7-dinitroanthracene radical anion

2015 ◽  
Vol 17 (6) ◽  
pp. 4038-4041 ◽  
Author(s):  
J. P. Telo ◽  
Á. Moneo
Keyword(s):  
Electron Transfer ◽  
Radical Anion ◽  
Redox State ◽  
Electronic Coupling ◽  
Reduced State

The 2,7-dinitroanthracene radical anion has an (apparent) electronic coupling much higher than either itsN,Ndistance or its non-Kekule substitution would suggest. The results can only be explained if a low-lying bridge redox state is influencing the electron transfer.

Intramolecular electron transfer in porphyrin-anthraquinone donor–acceptor systems with varying molecular bridges

2019 ◽  
Vol 23 (06) ◽  
pp. 628-638 ◽  
Author(s):  
Naresh Duvva ◽  
A. R. Ramya ◽  
Govind Reddy ◽  
L. Giribabu
Keyword(s):  
Electron Transfer ◽  
Ground State ◽  
Computational Analysis ◽  
Solvent Polarity ◽  
Electronic Coupling ◽  
Intramolecular Electron Transfer ◽  
Ether Linkage ◽  
Transfer Rates ◽  
Donor Acceptor ◽  
Ester Linkage

Photoinduced electron transfer has been investigated in porphyrin anthraquinone (ZnTTP-AQ) donor–acceptor dyads having either ester (ZnTTP-AQ1) or ether (ZnTTP-AQ2) linkages. Both dyads were characterized by spectroscopic and electrochemical methods. Absorption spectra show absence of any ground state interaction between the porphyrin and anthraquinone moieties. The quenched fluoresence and lifetime indicate electron transfer from the porphyrin to the anthraquinone moiety. The quenching is more pronounced in ZnTTP-AQ1 with ester linkage, suggesting efficient electronic coupling compared to the ether linkage in ZnTTP-AQ2. Computational analysis and frontier molecular orbitals confirmed the formation of charged separated state por[Formula: see text]AQ[Formula: see text]. The electron transfer rates ([Formula: see text] of these triads are found in the range 0.43 × 108 to 10.52 × 109 s[Formula: see text] and are found to be solvent polarity dependent.

Quantification of Electron Transfer Rates to a Solid Phase Electron Acceptor through the Stages of Biofilm Formation from Single Cells to Multicellular Communities

2010 ◽  
Vol 44 (7) ◽  
pp. 2721-2727 ◽  
Author(s):  
Jeffrey S. McLean ◽  
Greg Wanger ◽  
Yuri A. Gorby ◽  
Martin Wainstein ◽  
Jeff McQuaid ◽  
...  
Keyword(s):  
Electron Transfer ◽  
Electron Acceptor ◽  
Biofilm Formation ◽  
Solid Phase ◽  
Single Cells ◽  
Transfer Rates

Concerted double proton-transfer electron-transfer between catechol and superoxide radical anion

2017 ◽  
Vol 19 (38) ◽  
pp. 26179-26190 ◽  
Author(s):  
Jorge Quintero-Saumeth ◽  
David A. Rincón ◽  
Markus Doerr ◽  
Martha C. Daza
Keyword(s):  
Electron Transfer ◽  
Proton Transfer ◽  
Superoxide Anion ◽  
Radical Anion ◽  
Reaction Rate ◽  
Superoxide Radical ◽  
Superoxide Radical Anion ◽  
Double Proton Transfer

Catechol reacts with a superoxide anion via concerted double proton-transfer electron-transfer with a reaction rate that is dominated by tunneling.

Dual electron transfer pathways from the excited C60 radical anion: enhanced reactivities due to the photoexcitation of reaction intermediates

2015 ◽  
Vol 17 (46) ◽  
pp. 31030-31038 ◽  
Author(s):  
Mamoru Fujitsuka ◽  
Tatsuya Ohsaka ◽  
Tetsuro Majima
Keyword(s):  
Electron Transfer ◽  
Radical Anion ◽  
Reaction Intermediates ◽  
Electron Transfer Pathways

The excited C60 radical anion showed enhanced electron transfer.

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