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

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 charge separation in pyrenedicarboxamide-linked DNA hairpins

2008 ◽  
Vol 7 (12) ◽  
pp. 1501 ◽  
Author(s):  
Pierre Daublain ◽  
Karsten Siegmund ◽  
Mahesh Hariharan ◽  
Josh Vura-Weis ◽  
Michael R. Wasielewski ◽  
...  
Keyword(s):  
Charge Separation ◽  
Dna Hairpins ◽  
Photoinduced Charge Separation ◽  
Photoinduced Charge

Anionic Fluorinated Zn-porphyrin Combined with Cationic Endohedral Li-fullerene for Long-Lived Photoinduced Charge Separation with Low Energy Loss

2021 ◽  
Vol 125 (3) ◽  
pp. 918-925
Author(s):  
Kazuhira Miwa ◽  
Shinobu Aoyagi ◽  
Takahiro Sasamori ◽  
Hiroshi Ueno ◽  
Hiroshi Okada ◽  
...  
Keyword(s):  
Energy Loss ◽  
Charge Separation ◽  
Low Energy ◽  
Photoinduced Charge Separation ◽  
Photoinduced Charge

Photoinduced charge separation in microporous and mesoporous materials

2011 ◽  
Vol 89 (3) ◽  
pp. 257-265 ◽  
Author(s):  
Ranjit T. Koodali
Keyword(s):  
Mesoporous Materials ◽  
Charge Separation ◽  
Organic Molecules ◽  
Microporous Materials ◽  
Photoinduced Charge Separation ◽  
Photoinduced Charge ◽  
Mcm 41

A review of photoinduced charge separation of organic molecules in microporous and mesoporous materials is presented. In particular, the photoionization of N-alkylphenothiazine (PCn), N,N,N′,N′-tetramethylbenzidine (TMB), and porphyrin in microporous materials, such as zeolites, aluminophosphates (AlPOs), silicoaluminophosphates (SAPOs), and mesoporous materials, such as MCM-41, MCM-48, and SBA-15, is discussed.

Photoinduced charge separation in self-assembled cofacial pentamers of zinc-5,10,15,20-tetrakis(perylenediimide)porphyrin

2007 ◽  
Vol 9 (12) ◽  
pp. 1469 ◽  
Author(s):  
Michael J. Ahrens ◽  
Richard F. Kelley ◽  
Zachary E. X. Dance ◽  
Michael R. Wasielewski
Keyword(s):  
Charge Separation ◽  
Photoinduced Charge Separation ◽  
Self Assembled ◽  
Photoinduced Charge

The direct observation of charge separation dynamics in CdSe quantum dots/cobaloxime hybrids

2016 ◽  
Vol 18 (6) ◽  
pp. 4300-4303 ◽  
Author(s):  
J. Huang ◽  
Y. Tang ◽  
K. L. Mulfort ◽  
X. Zhang
Keyword(s):  
Quantum Dots ◽  
Quantum Dot ◽  
Charge Separation ◽  
Cdse Quantum Dots ◽  
X Ray ◽  
Molecular Catalyst ◽  
Cdse Quantum Dot ◽  
Photoinduced Charge Separation ◽  
X Ray Absorption ◽  
Photoinduced Charge

In this work, we investigated photoinduced charge separation dynamics in a CdSe quantum dot/cobaloxime molecular catalyst hybrid using the combination of transient optical (OTA) and X-ray absorption (XTA) spectroscopy.

Design of Efficient Photoinduced Charge Separation in Donor–Copper(I)–Acceptor Triad

2014 ◽  
Vol 118 (49) ◽  
pp. 28388-28400 ◽  
Author(s):  
Martina Sandroni ◽  
Antoine Maufroy ◽  
Mateusz Rebarz ◽  
Yann Pellegrin ◽  
Errol Blart ◽  
...  
Keyword(s):  
Charge Separation ◽  
Photoinduced Charge Separation ◽  
Photoinduced Charge
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