Excited-State Dynamics of Organic Radical Ions in Liquids and in Low-Temperature Matrices

2001 ◽  
Vol 105 (27) ◽  
pp. 6594-6601 ◽  
Author(s):  
Pierre Brodard ◽  
Alexandre Sarbach ◽  
Jean-Claude Gumy ◽  
Thomas Bally ◽  
Eric Vauthey
Keyword(s):  
Excited State ◽  
Low Temperature ◽  
Organic Radical ◽  
Radical Ions ◽  
Excited State Dynamics

Excited State Dynamics and Exciton Delocalization in Photosynthetic Light Harvesting Complexes at Low Temperature

1996 ◽  
pp. 318-319
Author(s):  
J. T. M. Kennis ◽  
A. M. Streltsov ◽  
S. I. E. Vulto ◽  
T. J. Aartsma ◽  
J. Amesz
Keyword(s):  
Excited State ◽  
Low Temperature ◽  
Light Harvesting ◽  
Light Harvesting Complexes ◽  
Excited State Dynamics

Excited-State Dynamics in the RNA Nucleotide Uridine 5’-Monophosphate Investigated by Femtosecond Broadband Transient Absorption Spectroscopy

2019 ◽  
Author(s):  
Matthew M. Brister ◽  
Carlos Crespo-Hernández
Keyword(s):  
Excited State ◽  
Excited States ◽  
Ground State ◽  
Transient Absorption ◽  
Electronic Energy ◽  
Transient Absorption Spectroscopy ◽  
Electronic Relaxation ◽  
Vibrationally Excited ◽  
Excited State Dynamics ◽  
Π State

<p></p><p> Damage to RNA from ultraviolet radiation induce chemical modifications to the nucleobases. Unraveling the excited states involved in these reactions is essential, but investigations aimed at understanding the electronic-energy relaxation pathways of the RNA nucleotide uridine 5’-monophosphate (UMP) have not received enough attention. In this Letter, the excited-state dynamics of UMP is investigated in aqueous solution. Excitation at 267 nm results in a trifurcation event that leads to the simultaneous population of the vibrationally-excited ground state, a longlived <sup>1</sup>n<sub>O</sub>π* state, and a receiver triplet state within 200 fs. The receiver state internally convert to the long-lived <sup>3</sup>ππ* state in an ultrafast time scale. The results elucidate the electronic relaxation pathways and clarify earlier transient absorption experiments performed for uracil derivatives in solution. This mechanistic information is important because long-lived nπ* and ππ* excited states of both singlet and triplet multiplicities are thought to lead to the formation of harmful photoproducts.</p><p></p>

Modulation of Excited State Dynamics in Lead Halide Perovskite Films with Electrical Bias

2019 ◽  
Author(s):  
Gergely Samu ◽  
R.A. Scheidt ◽  
A. Balog ◽  
C. Janáky ◽  
P.V. Kamat
Keyword(s):  
Excited State ◽  
Excited State Dynamics ◽  
Halide Perovskite ◽  
Electrical Bias ◽  
Lead Halide

Excited-state dynamics and energy transfers in (Ca,Zr)-substituted Gd3Ga5O12single crystals doped with Cr3+and Tm3+ions

1991 ◽  
Vol 3 (2) ◽  
pp. 203-214 ◽  
Author(s):  
A Brenier ◽  
C Madej ◽  
C Pedrini ◽  
G Boulon
Keyword(s):  
Excited State ◽  
Excited State Dynamics ◽  
Energy Transfers

Femtosecond Spectroscopic Studies of the One- and Two-Photon Excited-State Dynamics of 2,2,17,17-Tetramethyloctadeca-5,9,13-trien-3,7,11,15-tetrayne:  A Trimeric Oligodiacetylene

2006 ◽  
Vol 110 (40) ◽  
pp. 11435-11439 ◽  
Author(s):  
Grzegorz M. Balkowski ◽  
Michiel Groeneveld ◽  
Hong Zhang ◽  
Cindy C. J. Hendrikx ◽  
Michael Polhuis ◽  
...  
Keyword(s):  
Excited State ◽  
Spectroscopic Studies ◽  
Excited State Dynamics ◽  
Two Photon ◽  
The One
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