Description of electronic excited states using electron correlation operator

2013 ◽  
Vol 139 (10) ◽  
pp. 104111 ◽  
Author(s):  
Bryan Nichols ◽  
Vitaly A. Rassolov
Keyword(s):  
Excited States ◽  
Electron Correlation ◽  
Correlation Operator ◽  
Electronic Excited States

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).

Excited State Tracking During the Relaxation of Coordination Compounds

2018 ◽  
Author(s):  
Juan Sanz García ◽  
Martial Boggio-Pasqua ◽  
Ilaria Ciofini ◽  
Marco Campetella
Keyword(s):  
Excited State ◽  
Excited States ◽  
Potential Energy Surfaces ◽  
Photochemical Reactions ◽  
Complex Nature ◽  
Electronic Excited States ◽  
Ruthenium Nitrosyl ◽  
State Tracking ◽  
Energy Surfaces ◽  
Electronic Wavefunction

<div>The ability to locate minima on electronic excited states (ESs) potential energy surfaces (PESs) both in the case of bright and dark states is crucial for a full understanding of photochemical reactions. This task has become a standard practice for small- to medium-sized organic chromophores thanks to the constant developments in the field of computational photochemistry. However, this remains a very challenging effort when it comes to the optimization of ESs of transition metal complexes (TMCs), not only due to the presence of several electronic excited states close in energy, but also due to the complex nature of the excited states involved. In this article, we present a simple yet powerful method to follow an excited state of interest during a structural optimization in the case of TMC, based on the use of a compact hole-particle representation of the electronic transition, namely the natural transition orbitals (NTOs). State tracking using NTOs is unambiguously accomplished by computing the mono-electronic wavefunction overlap between consecutive steps of the optimization. Here, we demonstrate that this simple but robust procedure works not only in the case of the cytosine but also in the case of the ES optimization of a ruthenium-nitrosyl complex which is very problematic with standard approaches.</div>

scholarly journals Erratum to: Theoretical Study of the Electronic Excited States and Fluorescence Spectra of Squaraine in Solution

2014 ◽  
Vol 43 (9-10) ◽  
pp. 1644-1644
Author(s):  
Hitoshi Ozawa ◽  
Kazunori Yashiro ◽  
Takuma Yamamoto ◽  
Satoshi Yabushita
Keyword(s):  
Excited States ◽  
Fluorescence Spectra ◽  
Theoretical Study ◽  
Electronic Excited States

Theoretical Study of the Electronic Excited States of Tetracyanoethylene and Its Radical Anion

ChemPhysChem ◽  
2005 ◽  
Vol 6 (3) ◽  
pp. 503-510 ◽  
Author(s):  
Begoña Milián ◽  
Rosendo Pou-Amérigo ◽  
Manuela Merchán ◽  
Enrique Ortí
Keyword(s):  
Excited States ◽  
Radical Anion ◽  
Theoretical Study ◽  
Electronic Excited States

Spectroscopy of the electronic excited states of thioxophosphane, HPS, and of its deuterated species

2018 ◽  
Vol 149 (16) ◽  
pp. 164303 ◽  
Author(s):  
B. Mehnen ◽  
R. Linguerri ◽  
S. Ben Yaghlane ◽  
M. Mogren Al Mogren ◽  
A. Elmarghany ◽  
...  
Keyword(s):  
Excited States ◽  
Electronic Excited States
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