Solvent Effect on Conical Intersections in Excited-State 9H-Adenine:  Radiationless Decay Mechanism in Polar Solvent

2007 ◽  
Vol 129 (10) ◽  
pp. 2901-2909 ◽  
Author(s):  
Shohei Yamazaki ◽  
Shigeki Kato
Keyword(s):  
Excited State ◽  
Solvent Effect ◽  
Polar Solvent ◽  
Conical Intersections ◽  
Decay Mechanism ◽  
Radiationless Decay

The Malleable Excited States of Benzothiadiazole Dyes and Investigation of their Potential for Photochemical Control

2019 ◽  
Author(s):  
Caroline C. Warner ◽  
andrea thooft ◽  
Bryan J. Lampkin ◽  
selin demirci ◽  
Brett VanVeller
Keyword(s):  
Excited State ◽  
Excited States ◽  
Polar Solvent ◽  
Nonpolar Solvent ◽  
Photochemical Degradation ◽  
Solvent Lead ◽  
Environmentally Sensitive

<p>A strategy to control the efficiency of a photocleavage reaction based on changing the nature of the excited state is presented. A novel class of photoactive compounds has been synthesized by combining the classical o-nitrobenzyl scaffold with an environmentally sensitive dye, 4-amino-nitrobenzothiazole. Irradiation in a polar solvent lead to an excited state that is inoperative for photochemistry whereas excitation in a nonpolar solvent lead to an excited state that is photochemically active. A photochemical degradation appears to be the preferred process in contrast to the intended photocleavage process.</p>

Ultrafast Excited State Dynamics of 5,6-Dihydroxyindole, A Key Eumelanin Building Block: Nonradiative Decay Mechanism

2009 ◽  
Vol 113 (37) ◽  
pp. 12575-12580 ◽  
Author(s):  
Magdalena Gauden ◽  
Alessandro Pezzella ◽  
Lucia Panzella ◽  
Alessandra Napolitano ◽  
Marco d’Ischia ◽  
...  
Keyword(s):  
Excited State ◽  
Building Block ◽  
Decay Mechanism ◽  
Nonradiative Decay ◽  
Excited State Dynamics

scholarly journals Electroresponsive structuring and friction of a non-halogenated ionic liquid in a polar solvent: effect of concentration

2020 ◽  
Vol 22 (34) ◽  
pp. 19162-19171 ◽  
Author(s):  
Georgia A. Pilkington ◽  
Anna Oleshkevych ◽  
Patricia Pedraz ◽  
Seiya Watanabe ◽  
Milad Radiom ◽  
...  
Keyword(s):  
Atomic Force Microscopy ◽  
Ionic Liquid ◽  
Solvent Effect ◽  
Polar Solvent ◽  
Neutron Reflectivity ◽  
Force Microscopy ◽  
Frictional Properties ◽  
Atomic Force

Neutron reflectivity and atomic force microscopy results reveal the electroresponsive interfacial structuring and nano-frictional properties of ionic liquid (IL) lubricant mixtures with a polar solvent are strongly dependent on bulk IL concentration.

scholarly journals Ultrafast dynamics in polycyclic aromatic hydrocarbons: the key case of conical intersections at higher excited states and their role in the photophysics of phenanthrene monomer

2019 ◽  
Vol 21 (31) ◽  
pp. 16981-16988 ◽  
Author(s):  
M. Nazari ◽  
C. D. Bösch ◽  
A. Rondi ◽  
A. Francés-Monerris ◽  
M. Marazzi ◽  
...  
Keyword(s):  
Excited State ◽  
Excited States ◽  
Aromatic Hydrocarbons ◽  
Ultrafast Dynamics ◽  
Simultaneous Presence ◽  
Conical Intersections ◽  
Polycyclic Aromatic ◽  
Adiabatic Transitions ◽  
Proper Interpretation ◽  
Higher Excited States

Proper interpretation of phenanthrene's and similar PAHs’ photocycle relies on two higher excited state relaxations due to the simultaneous presence of non-adiabatic and adiabatic transitions.

scholarly journals Ultrafast and radiationless electronic excited state decay of uracil and thymine cations: computing the effects of dynamic electron correlation

2019 ◽  
Vol 21 (26) ◽  
pp. 14322-14330 ◽  
Author(s):  
Javier Segarra-Martí ◽  
Thierry Tran ◽  
Michael J. Bearpark
Keyword(s):  
Excited State ◽  
Excited States ◽  
Electron Correlation ◽  
Electronic Excited States ◽  
Electronic Excited State ◽  
State Decay ◽  
Radiationless Decay

In this article we characterise the radiationless decay of the first few electronic excited states of the cations of DNA/RNA nucleobases uracil and thymine, including the effects of dynamic electron correlation on energies and geometries (optimised with XMS-CASPT2).

Sign in / Sign up

Export Citation Format

Share Document