Tuning Charge Recombination Rate Constants through Inner-Sphere Coordination in a Copper(I) Donor−Acceptor Compound

2000 ◽  
Vol 39 (17) ◽  
pp. 3765-3770 ◽  
Author(s):  
Donald V. Scaltrito ◽  
Craig A. Kelly ◽  
Mark Ruthkosky ◽  
Mark C. Zaros ◽  
Gerald J. Meyer
Keyword(s):  
Rate Constants ◽  
Recombination Rate ◽  
Charge Recombination ◽  
Inner Sphere ◽  
Donor Acceptor

Fusion of thienyl into the backbone of electron acceptor in organic photovoltaic heterojunctions: a comparative study of BTPT-4F and BTPTT-4F

2020 ◽  
Vol 44 (14) ◽  
pp. 5224-5234 ◽  
Author(s):  
Rui-Rong Bai ◽  
Cai-Rong Zhang ◽  
You-Zhi Wu ◽  
Mei-Ling Zhang ◽  
Yu-Hong Chen ◽  
...  
Keyword(s):  
Comparative Study ◽  
Electron Acceptor ◽  
Recombination Rate ◽  
Charge Recombination ◽  
Organic Photovoltaic ◽  
Significant Suppression ◽  
Donor Acceptor

The fusion of thiophene into a non-fullerene acceptor backbone causes significant suppression of the charge recombination rate at the donor/acceptor heterojunction interface.

Decreased Interfacial Charge Recombination Rate Constants with N3-Type Sensitizers

2010 ◽  
Vol 1 (11) ◽  
pp. 1725-1728 ◽  
Author(s):  
Maria Abrahamsson ◽  
Patrik G. Johansson ◽  
Shane Ardo ◽  
Andrew Kopecky ◽  
Elena Galoppini ◽  
...  
Keyword(s):  
Rate Constants ◽  
Recombination Rate ◽  
Charge Recombination ◽  
Interfacial Charge

Quantifying Charge Recombination in Solar Cells Based on Donor–Acceptor P3HT Analogues

2014 ◽  
Vol 118 (13) ◽  
pp. 6650-6660 ◽  
Author(s):  
Saptaparna Das ◽  
Petr P. Khlyabich ◽  
Beate Burkhart ◽  
Sean T. Roberts ◽  
Elsa Couderc ◽  
...  
Keyword(s):  
Solar Cells ◽  
Charge Recombination ◽  
Donor Acceptor

Light harvesting vesicular donor–acceptor scaffold limits the rate of charge recombination in the presence of an electron donor

2014 ◽  
Vol 7 (5) ◽  
pp. 1661-1669 ◽  
Author(s):  
Rijo T. Cheriya ◽  
Ajith R. Mallia ◽  
Mahesh Hariharan
Keyword(s):  
Charge Transfer ◽  
Survival Time ◽  
Electron Donor ◽  
Self Assembly ◽  
Light Harvesting ◽  
Charge Recombination ◽  
Donor Acceptor

This work highlights the utility of π–π stacked self-assembly for enhanced survival time of charge transfer intermediates upon photoexcitation of donor–acceptor systems.

Time-resolved FTIR study of CO recombination with horseradish peroxidase

2008 ◽  
Vol 36 (6) ◽  
pp. 1165-1168 ◽  
Author(s):  
Amandine Maréchal ◽  
W. John Ingledew ◽  
Peter R. Rich
Keyword(s):  
Fourier Transform ◽  
Ir Spectroscopy ◽  
Horseradish Peroxidase ◽  
Rate Constants ◽  
Recombination Rate ◽  
Thermal Equilibrium ◽  
Time Resolved ◽  
Fourier Transform Ir Spectroscopy ◽  
Rapid Scan ◽  
Fourier Transform Ir

Vibrational changes associated with CO recombination to ferrous horseradish peroxidase were investigated by rapid-scan FTIR (Fourier-transform IR) spectroscopy in the 1200–2200 cm−1 range. At pH 6.0, two conformers of bound CO are present that appear as negative bands at 1905 and 1934 cm−1 in photolysis spectra. Their recombination rate constants are identical, confirming that they arise from two substates of bound CO that are in rapid thermal equilibrium, rather than from heterogeneous protein sites. A smaller positive band at 2134 cm−1 also appears on photolysis and decays with the same rate constant, indicative of an intraprotein geminate site involved in recombination or, possibly, a weak-affinity surface CO-binding site. Other signals arising from protein and haem in the 1700–1200 cm−1 range can also be time-resolved with similar kinetics.

scholarly journals Concerted proton-electron transfer reactions in the Marcus inverted region

Science ◽  
2019 ◽  
Vol 364 (6439) ◽  
pp. 471-475 ◽  
Author(s):  
Giovanny A. Parada ◽  
Zachary K. Goldsmith ◽  
Scott Kolmar ◽  
Belinda Pettersson Rimgard ◽  
Brandon Q. Mercado ◽  
...  
Keyword(s):  
Electron Transfer ◽  
Rate Constants ◽  
Charge Recombination ◽  
Transfer Reactions ◽  
Inverted Region ◽  
Electron Transfer Reactions ◽  
Proton Coupled Electron Transfer ◽  
Marcus Inverted Region ◽  
A Charge ◽  
Theory Yield

Electron transfer reactions slow down when they become very thermodynamically favorable, a counterintuitive interplay of kinetics and thermodynamics termed the inverted region in Marcus theory. Here we report inverted region behavior for proton-coupled electron transfer (PCET). Photochemical studies of anthracene-phenol-pyridine triads give rate constants for PCET charge recombination that are slower for the more thermodynamically favorable reactions. Photoexcitation forms an anthracene excited state that undergoes PCET to create a charge-separated state. The rate constants for return charge recombination show an inverted dependence on the driving force upon changing pyridine substituents and the solvent. Calculations using vibronically nonadiabatic PCET theory yield rate constants for simultaneous tunneling of the electron and proton that account for the results.

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