scholarly journals Charge-Separation and Charge-Recombination Rate Constants in a Donor–Acceptor Buckybowl-Based Supramolecular Complex: Multistate and Solvent Effects

2021 ◽  
Author(s):  
Jesús Cerdá ◽  
Joaquín Calbo ◽  
Enrique Ortí ◽  
Juan Aragó
Keyword(s):  
Solvent Effects ◽  
Rate Constants ◽  
Recombination Rate ◽  
Charge Separation ◽  
Charge Recombination ◽  
Supramolecular Complex ◽  
Donor Acceptor

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.

Dynamics and efficiency of photoinduced charge transport in DNA: Toward the elusive molecular wire

2013 ◽  
Vol 85 (7) ◽  
pp. 1379-1387 ◽  
Author(s):  
Frederick D. Lewis ◽  
Michael R. Wasielewski
Keyword(s):  
Charge Transport ◽  
Rate Constants ◽  
Charge Separation ◽  
Molecular Wires ◽  
Charge Recombination ◽  
Hole Injection ◽  
Experimental Investigations ◽  
Purine Base ◽  
Base Sequences ◽  
Photoinduced Charge

Experimental investigations of photoinduced charge transport in synthetic DNA capped hairpins possessing electron acceptor and donor stilbene chromophores at either end have established the mechanism, dynamics, and efficiency of charge transport in DNA. The mechanism for charge transport in repeating A-T base pairs (A-tracts) was found to change from single-step superexchange at short distances to multistep incoherent hole hopping at longer distances. The rate constants for base-to-base hole hopping in longer A- and G-tract sequences are 1.2 × 109 s–1 and 4.3 × 109 s–1, respectively, considerably slower than the rate constants associated with molecular wires. Even slower rate constants are observed for alternating or random base sequences such as those encountered in natural DNA. The efficiency of charge separation in capped hairpins with A-tract sequences is also low as a consequence of the competition of hole hopping with charge recombination. Significantly higher efficiencies for charge separation are possible using diblock purine base sequences consisting of two or three adenines followed by a larger number of guanines. The short A-block serves as a molecular rectifier, slowing down charge recombination. More efficient charge separation can also be achieved using non-natural bases or by using the triplet acceptor anthraquinone for hole injection.

scholarly journals Sc3N@Ih-C80 based donor–acceptor conjugate: role of thiophene spacer in promoting ultrafast excited state charge separation

RSC Advances ◽  
2020 ◽  
Vol 10 (34) ◽  
pp. 19861-19866
Author(s):  
Rubén Caballero ◽  
Luis David Servián ◽  
Habtom B. Gobeze ◽  
Olivia Fernandez-Delgado ◽  
Luis Echegoyen ◽  
...  
Keyword(s):  
Excited State ◽  
Charge Separation ◽  
Charge Recombination ◽  
Photoinduced Charge Separation ◽  
Donor Acceptor ◽  
Photoinduced Charge ◽  
State Charge

Photoinduced charge separation and dark charge recombination occurring within picoseconds is observed in newly synthesized triphenylamine–thiophene-Sc3N@Ih-C80 and triphenylamine–thiophene-C60 conjugates.

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
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