Investigation of the Excited-State Dynamics of Radical Ions in the Condensed Phase Using the Picosecond Transient Grating Technique

1997 ◽  
Vol 101 (46) ◽  
pp. 8575-8580 ◽  
Author(s):  
Jean-Claude Gumy ◽  
Eric Vauthey
Keyword(s):  
Excited State ◽  
Condensed Phase ◽  
Radical Ions ◽  
Transient Grating ◽  
Excited State Dynamics

Picosecond Time-Resolved Transient Grating Method for Heat Detection:  Excited-State Dynamics of FeCl3ando-Hydroxybenzophenone in Aqueous Solution

1997 ◽  
Vol 101 (4) ◽  
pp. 650-655 ◽  
Author(s):  
Toshiya Okazaki ◽  
Noboru Hirota ◽  
Masahide Terazima
Keyword(s):  
Aqueous Solution ◽  
Excited State ◽  
Transient Grating ◽  
Time Resolved ◽  
Excited State Dynamics

Direct Observation of Ultrafast Excited State Dynamics in Condensed Phase Photochemistry and Photobiology

2000 ◽  
Author(s):  
Roseanne J. Sension ◽  
Neil A. Anderson ◽  
Joseph J. Shiang ◽  
Allwyn G. Cole
Keyword(s):  
Excited State ◽  
Direct Observation ◽  
Condensed Phase ◽  
Excited State Dynamics

Excited-State Dynamics of Chlorine Dioxide in the Condensed Phase from Resonance Raman Intensities

1997 ◽  
Vol 101 (29) ◽  
pp. 5309-5319 ◽  
Author(s):  
Anthony P. Esposito ◽  
Catherine E. Foster ◽  
Robert A. Beckman ◽  
Philip J. Reid
Keyword(s):  
Excited State ◽  
Chlorine Dioxide ◽  
Condensed Phase ◽  
Resonance Raman ◽  
Excited State Dynamics ◽  
Resonance Raman Intensities ◽  
Raman Intensities

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

Nonlinear excited-state dynamics of a thin copper phthalocyanine film by femtosecond transient grating spectroscopy

1995 ◽  
Vol 234 (4-6) ◽  
pp. 337-342 ◽  
Author(s):  
Tsuyoshi Asahi ◽  
Naoto Tamai ◽  
Tatsuya Uchida ◽  
Noburo Shimo ◽  
Hiroshi Masuhara
Keyword(s):  
Excited State ◽  
Copper Phthalocyanine ◽  
Transient Grating ◽  
Excited State Dynamics ◽  
Transient Grating Spectroscopy ◽  
Grating Spectroscopy

Excited State Dynamics of 9,10-Diazaphenanthrene Studied by the Time-Resolved Transient Grating Method

1996 ◽  
Vol 100 (24) ◽  
pp. 10015-10020 ◽  
Author(s):  
Makoto Takezaki ◽  
Noboru Hirota ◽  
Masahide Terazima
Keyword(s):  
Excited State ◽  
Transient Grating ◽  
Time Resolved ◽  
Excited State Dynamics

Direct Observation of Ultrafast Excited State Dynamics in Condensed Phase Photochemistry and Photobiology.

2001 ◽  
pp. 648-650 ◽  
Author(s):  
Roseanne J. Sension ◽  
Allwyn G. Cole ◽  
Neil A. Anderson ◽  
Joseph J. Shiang
Keyword(s):  
Excited State ◽  
Direct Observation ◽  
Condensed Phase ◽  
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>

Sign in / Sign up

Export Citation Format

Share Document