Dynamics of Photoinduced Charge Separation and Charge Recombination in Synthetic DNA Hairpins with Stilbenedicarboxamide Linkers

2000 ◽  
Vol 122 (12) ◽  
pp. 2889-2902 ◽  
Author(s):  
Frederick D. Lewis ◽  
Taifeng Wu ◽  
Xiaoyang Liu ◽  
Robert L. Letsinger ◽  
Scott R. Greenfield ◽  
...  
Keyword(s):  
Charge Separation ◽  
Charge Recombination ◽  
Dna Hairpins ◽  
Synthetic Dna ◽  
Photoinduced Charge Separation ◽  
Photoinduced Charge

Raising the barrier for photoinduced DNA charge injection with a cyclohexyl artificial base pair

2015 ◽  
Vol 185 ◽  
pp. 105-120 ◽  
Author(s):  
Arunoday P. N. Singh ◽  
Michelle A. Harris ◽  
Ryan M. Young ◽  
Stephen A. Miller ◽  
Michael R. Wasielewski ◽  
...  
Keyword(s):  
Base Pair ◽  
Charge Separation ◽  
Charge Recombination ◽  
Hole Injection ◽  
Quantum Yields ◽  
Base Pairs ◽  
Dna Hairpins ◽  
Synthetic Dna ◽  
Photoinduced Charge Separation ◽  
Photoinduced Charge

The effects of an artificial cyclohexyl base pair on the quantum yields of fluorescence and dynamics of charge separation and charge recombination have been investigated for several synthetic DNA hairpins. The hairpins possess stilbenedicarboxamide, perylenediimide, or naphthalenediimide linkers and base-paired stems. In the absence of the artificial base pair hole injection into both adenine and guanine purine bases is exergonic and irreversible, except in the case of stilbene with adenine for which it is slightly endergonic and reversible. Insertion of the artificial base pair renders hole injection endergonic or isoergonic except in the case of the powerful naphthalene acceptor for which it remains exergonic. Both hole injection and charge recombination are slower for the naphthalene acceptor in the presence of the artificial base pair than in its absence. The effect of an artificial base pair on charge separation and charge recombination in hairpins possessing stilbene and naphthalene acceptor linkers and a stilbenediether donor capping group has also been investigated. In the case of the stilbene acceptor–stilbene donor capped hairpins photoinduced charge separation across six base pairs is efficient in the absence of the artificial base pair but does not occur in its presence. In the case of the naphthalene acceptor–stilbene donor capped hairpins the artificial base pair slows but does not stop charge separation and charge recombination, leading to the formation of long-lived charge separated states.

Photoinduced electron transfer in 5-bromouracil labeled DNA. A contrathermodynamic mechanism revisited by electron transfer theories

2019 ◽  
Vol 21 (8) ◽  
pp. 4387-4393 ◽  
Author(s):  
Lorenzo Cupellini ◽  
Paweł Wityk ◽  
Benedetta Mennucci ◽  
Janusz Rak
Keyword(s):  
Electron Transfer ◽  
Charge Separation ◽  
Photoinduced Electron Transfer ◽  
Charge Recombination ◽  
Photoinduced Charge Separation ◽  
Photoinduced Charge

Neither the rates of photoinduced charge separation nor charge recombination account for the substantial damage observed in the 5′-ABrU sequence.

Pathways for Photoinduced Charge Separation in DNA Hairpins

2003 ◽  
Vol 125 (47) ◽  
pp. 14510-14517 ◽  
Author(s):  
D. Beljonne ◽  
G. Pourtois ◽  
M. A. Ratner ◽  
J. L. Brédas
Keyword(s):  
Charge Separation ◽  
Dna Hairpins ◽  
Photoinduced Charge Separation ◽  
Photoinduced Charge

scholarly journals Dipole-Mediated Rectification of Intramolecular Photoinduced Charge Separation and Charge Recombination

2014 ◽  
Vol 136 (37) ◽  
pp. 12966-12973 ◽  
Author(s):  
Duoduo Bao ◽  
Srigokul Upadhyayula ◽  
Jillian M. Larsen ◽  
Bing Xia ◽  
Boriana Georgieva ◽  
...  
Keyword(s):  
Charge Separation ◽  
Charge Recombination ◽  
Photoinduced Charge Separation ◽  
Photoinduced Charge

Photoinduced Charge-Separation and Charge-Recombination Processes of Oligo(thienyleneethynyl)–Fullerene Dyad Molecules

2006 ◽  
Vol 79 (12) ◽  
pp. 1860-1868 ◽  
Author(s):  
Mamoru Fujitsuka ◽  
Takashi Makinoshima ◽  
Atushi Takamizawa ◽  
Yasuyuki Araki ◽  
Osamu Ito ◽  
...  
Keyword(s):  
Charge Separation ◽  
Charge Recombination ◽  
Recombination Processes ◽  
Photoinduced Charge Separation ◽  
Photoinduced Charge

Photoinduced Charge Separation and Charge Recombination to a Triplet State in a Carotene−Porphyrin−Fullerene Triad

1997 ◽  
Vol 119 (6) ◽  
pp. 1400-1405 ◽  
Author(s):  
Paul A. Liddell ◽  
Darius Kuciauskas ◽  
John P. Sumida ◽  
Boaz Nash ◽  
Dorothy Nguyen ◽  
...  
Keyword(s):  
Triplet State ◽  
Charge Separation ◽  
Charge Recombination ◽  
Photoinduced Charge Separation ◽  
Photoinduced Charge
Sign in / Sign up

Export Citation Format

Share Document