Pulse radiolysis of solutions of stilbene. I. Evidence for triplet and singlet excited state formation

1972 ◽  
Vol 76 (25) ◽  
pp. 3897-3904 ◽  
Author(s):  
Frederick Dainton ◽  
E. A. Robinson ◽  
G. A. Salmon
Keyword(s):  
Excited State ◽  
State Formation ◽  
Pulse Radiolysis ◽  
Singlet Excited State

Kinetics of solute excited state formation in the pulse radiolysis of 9,10-diphenyl anthracene and p-terphenyl in cyclohexane solutions

1979 ◽  
Vol 63 (3) ◽  
pp. 535-538 ◽  
Author(s):  
Charles D. Jonah ◽  
Myran C. Sauer ◽  
Ronald Cooper ◽  
Alexander D. Trifunac
Keyword(s):  
Excited State ◽  
State Formation ◽  
Pulse Radiolysis ◽  
Kinetics Of

Fast excited state formation and decay in the pulse radiolysis of gaseous argon–iodine systems

1976 ◽  
Vol 64 (11) ◽  
pp. 4587-4591 ◽  
Author(s):  
Myran C. Sauer ◽  
William A. Mulac ◽  
Ronald Cooper ◽  
Franz Grieser
Keyword(s):  
Excited State ◽  
State Formation ◽  
Pulse Radiolysis

scholarly journals Ultrafast excited state dynamics and light-switching of [Ru(phen)2(dppz)]2+ in G-quadruplex DNA

2021 ◽  
Vol 4 (1) ◽  
Author(s):  
Chunfan Yang ◽  
Qian Zhou ◽  
Zeqing Jiao ◽  
Hongmei Zhao ◽  
Chun-Hua Huang ◽  
...  
Keyword(s):  
Excited State ◽  
State Formation ◽  
Rational Design ◽  
Bound Water ◽  
Binding Modes ◽  
Relaxation Dynamics ◽  
Dark State ◽  
Excited State Dynamics ◽  
G Quadruplex ◽  
Mechanistic Basis

AbstractThe triplet metal to ligand charge transfer (3MLCT) luminescence of ruthenium (II) polypyridyl complexes offers attractive imaging properties, specifically towards the development of sensitive and structure-specific DNA probes. However, rapidly-deactivating dark state formation may compete with 3MLCT luminescence depending on different DNA structures. In this work, by combining femtosecond and nanosecond pump-probe spectroscopy, the 3MLCT relaxation dynamics of [Ru(phen)2(dppz)]2+ (phen = 1,10-phenanthroline, dppz = dipyridophenazine) in two iconic G-quadruplexes has been scrutinized. The binding modes of stacking of dppz ligand on the terminal G-quartet fully and partially are clearly identified based on the biexponential decay dynamics of the 3MLCT luminescence at 620 nm. Interestingly, the inhibited dark state channel in ds-DNA is open in G-quadruplex, featuring an ultrafast picosecond depopulation process from 3MLCT to a dark state. The dark state formation rates are found to be sensitive to the content of water molecules in local G-quadruplex structures, indicating different patterns of bound water. The unique excited state dynamics of [Ru(phen)2(dppz)]2+ in G-quadruplex is deciphered, providing mechanistic basis for the rational design of photoactive ruthenium metal complexes in biological applications.

Amino derivatives of symmetric 1,3,5-triphenylbenzene. Nature of the polar singlet excited state.

1993 ◽  
Vol 176 (1) ◽  
pp. 195-213 ◽  
Author(s):  
G. Verbeek ◽  
S. Depaemelaere ◽  
M. Van der Auweraer ◽  
F.C. De Schryver ◽  
A. Vaes ◽  
...  
Keyword(s):  
Excited State ◽  
Singlet Excited State ◽  
Amino Derivatives ◽  
Derivatives Of

Thionine–graphene oxide covalent hybrid and its interaction with light

2017 ◽  
Vol 19 (22) ◽  
pp. 14412-14423 ◽  
Author(s):  
Ewelina Krzyszkowska ◽  
Justyna Walkowiak-Kulikowska ◽  
Sven Stienen ◽  
Aleksandra Wojcik
Keyword(s):  
Electron Transfer ◽  
Graphene Oxide ◽  
Excited State ◽  
Transfer Process ◽  
Singlet Excited State ◽  
Functionalized Graphene ◽  
Electron Transfer Process ◽  
Functionalized Graphene Oxide ◽  
Back Electron Transfer

Quenching of the thionine singlet excited state in covalently functionalized graphene oxide with an efficient back electron transfer process.

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