Results 21 to 30 of about 1,214,634 (346)

An Insight into the Excitation States of Small Molecular Semiconductor Y6

open access: yesMolecules, 2020
Y6 is a new type of non-fullerene acceptor, which has led to power conversion efficiencies of single-junction polymer solar cells over 17% when combined with a careful choice of polymeric donors. However, the excited state characteristics of Y6, which is
Xianshao Zou   +7 more
doaj   +1 more source

Effects and Influence of External Electric Fields on the Equilibrium Properties of Tautomeric Molecules

open access: yesMolecules, 2023
In this review, we have attempted to briefly summarize the influence of an external electric field on an assembly of tautomeric molecules and to what experimentally observable effects this interaction can lead to.
Ivan Angelov   +2 more
doaj   +1 more source

Numerical Simulations of Oscillating Soliton Stars: Excited States in Spherical Symmetry and Ground State Evolutions in 3D [PDF]

open access: yes, 2008
Excited state soliton stars are studied numerically for the first time. The stability of spherically symmetric S-branch excited state oscillatons under radial perturbations is investigated using a 1D code. We find that these stars are inherently unstable
Gregory Daues   +4 more
core   +3 more sources

Temperature-Dependent Dual Fluorescence from Small Organic Molecules

open access: yesOrganic Materials, 2022
The temperature-dependent dual fluorescence from a single component of small organic molecules (SOMs) is very promising for the ratiometric fluorescence sensing of temperature. However, the SOM-based fluorophores typically only show one fluorescence band.
Min Wang, Run-Ze Wang, Cui-Hua Zhao
doaj   +1 more source

Excited-state Wigner crystals [PDF]

open access: yesThe Journal of Chemical Physics, 2017
Wigner crystals (WCs) are electronic phases peculiar to low-density systems, particularly in the uniform electron gas. Since its introduction in the early twentieth century, this model has remained essential to many aspects of electronic structure theory and condensed-matter physics.
Rogers, Fergus, Loos, Pierre-Francois
openaire   +3 more sources

Fission and cluster decay of $^{76}$Sr nucleus in the ground-state and formed in heavy-ion reactions [PDF]

open access: yes, 1997
Calculations for fission and cluster decay of $^{76}Sr$ are presented for this nucleus to be in its ground-state or formed as an excited compound system in heavy-ion reactions.
A. S. Jensen   +38 more
core   +4 more sources

Hyperridge of triply excited states [PDF]

open access: yesPhysical Review A, 1988
We present a theory for the definition and the reliable calculation of correlated wave functions of a special class of triply excited states and for their rigorous geometrical analysis. This class is named the three-electron ionization ladder (THEIL) and refers to the simultaneous excitation of three electrons in valence states near threshold ...
Νικολαΐδης, Κλεάνθης A.   +3 more
openaire   +3 more sources

Entropy, chaos and excited-state quantum phase transitions in the Dicke model [PDF]

open access: yes, 2016
We study non-equilibrium processes in an isolated quantum system ---the Dicke model--- focusing on the role played by the transition from integrability to chaos and the presence of excited-state quantum phase transitions.
Lóbez, C. M., Relaño, A.
core   +3 more sources

Some applications of excited-state-excited-state transition densities [PDF]

open access: yesPhysical Review A, 1975
We derive an approximation for transition moments between excited states consistent with the approximations and assumptions normally used to obtain transition moments betwen the ground and excited states in the random-phase approximation and its higher-order approximations. We apply the result to the calculation of the photoionization cross sections of
Yeager, D. L.   +2 more
openaire   +2 more sources

Coupled Excited-State Dynamics in N-Substituted 2-Methoxy-9-Acridones

open access: yesFrontiers in Chemistry, 2019
Fluorophores of the acridone family have been widely employed in many applications, such as DNA sequencing, the detection of biomolecules, and the monitoring of enzymatic systems, as well as being the bases of intracellular sensors and even antitumoral ...
M. Carmen Gonzalez-Garcia   +9 more
doaj   +1 more source

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