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

Direct observation of the rise of delayed fluorescence in dithienylbenzothiadiazole and its role in the excited state dynamics of a donor–acceptor–donor molecule

2017 ◽  
Vol 19 (13) ◽  
pp. 9118-9127 ◽  
Author(s):  
Maneesha Esther Mohanty ◽  
Chakali Madhu ◽  
Vanammoole Lakshmi Reddy ◽  
Mahalingavelar Paramasivam ◽  
Prakriti Ranjan Bangal ◽  
...  
Keyword(s):  
Excited State ◽  
Direct Observation ◽  
Delayed Fluorescence ◽  
Intersystem Crossing ◽  
Donor Molecule ◽  
Excited State Dynamics ◽  
Donor Acceptor

Fast reverse intersystem crossing in a donor–acceptor system used in OLED and OPV materials.

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
Sign in / Sign up

Export Citation Format

Share Document