Ultrafast Excited-State Dynamics of all-trans-Capsanthin in Organic Solvents

2017 ◽  
Vol 121 (44) ◽  
pp. 8380-8388 ◽  
Author(s):  
Mirko Scholz ◽  
Oliver Flender ◽  
Thomas Lenzer ◽  
Kawon Oum
Keyword(s):  
Excited State ◽  
Organic Solvents ◽  
Excited State Dynamics

scholarly journals Complexes of a naphthalimide photoacid with organic bases, and their excited-state dynamics in polar aprotic organic solvents

2015 ◽  
Vol 17 (32) ◽  
pp. 20715-20724 ◽  
Author(s):  
Tatu Kumpulainen ◽  
Bert H. Bakker ◽  
Albert M. Brouwer
Keyword(s):  
Excited State ◽  
Organic Solvents ◽  
Ground State ◽  
Ion Pair ◽  
Excited State Dynamics ◽  
Organic Bases ◽  
P Addition

Addition of a base to a solution of a photoacid in aprotic organic solvents results in the formation of ground-state complexes, which upon excitation dissociate via intermediate ion pair species.

Protochlorophyllide Excited-State Dynamics in Organic Solvents Studied by Time-Resolved Visible and Mid-Infrared Spectroscopy

2010 ◽  
Vol 114 (12) ◽  
pp. 4335-4344 ◽  
Author(s):  
Olga A. Sytina ◽  
Ivo H. M. van Stokkum ◽  
Derren J. Heyes ◽  
C. Neil Hunter ◽  
Rienk van Grondelle ◽  
...  
Keyword(s):  
Infrared Spectroscopy ◽  
Excited State ◽  
Organic Solvents ◽  
Time Resolved ◽  
Mid Infrared ◽  
Mid Infrared Spectroscopy ◽  
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

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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