Results 61 to 70 of about 259,290 (345)

Unconventional Solar Energy: Singlet Fission [PDF]

open access: yesMolecular Frontiers Journal, 2019
Described simply, singlet fission is a process in which a singlet excited molecule transfers about half of its excitation energy to a neighbor molecule, both end up in their triplet state, and the two triplet excitations diffuse apart.
Josef Michl
doaj   +1 more source

Singlet-triplet splitting, correlation and entanglement of two electrons in quantum dot molecules

open access: yes, 2005
Starting with an accurate pseudopotential description of the single-particle states, and following by configuration-interaction treatment of correlated electrons in vertically coupled, self-assembled InAs/GaAs quantum dot-molecules, we show how simpler ...
Alex Zunger   +4 more
core   +1 more source

Covalent Organic Frameworks for Photocatalytic CO2 Reduction: Metal Integration Principles, Strategies and Functions

open access: yesAdvanced Functional Materials, EarlyView.
Covalent organic frameworks (COFs) with metals have been recognized as versatile platforms for photocatalytic CO2 reduction (CO2PRR). Herein, an overview of metal integration strategies for COFs is systematically summarized. Regulatory mechanisms and structure–activity relationships between metal integration and COF‐based CO2PRR are emphasized.
Jie He   +5 more
wiley   +1 more source

Entanglement—A Higher Order Symmetry

open access: yesPhysical Sciences Forum, 2023
Can we accurately model the spin state of a quantum particle? If so, we should be able to make identical copies of such a state and also obtain its mirror image.
Paul O’Hara
doaj   +1 more source

Enhanced Gain in Organic Photodetectors Using the Polymer with Singlet Open‐Shell Ground State [PDF]

open access: bronze, 2023
Qianxi Dang   +11 more
openalex   +1 more source

Nanothermometry in Living Cells: Physical Limits, Conceptual and Material Challenges

open access: yesAdvanced Functional Materials, EarlyView.
Heat and temperature are fundamental to life. When nanothermometers began probing regions as small as a living cell, they triggered controversial claims of large intracellular temperature gradients. We review physical constraints energy‐conservation, entropy production, thermodynamic fluctuations, and molecular dynamics.
Taras Plakhotnik
wiley   +1 more source

Quantitative theory of magnetic properties of elemental praseodymium

open access: yesnpj Computational Materials
Elemental Pr metal is unique among rare-earth elements in featuring a localized partially filled 4f shell without ordered magnetism. Experimental evidence attributes this absence of magnetism to a singlet crystal-field (CF) ground state of the Pr 4f 2 ...
Leonid V. Pourovskii   +3 more
doaj   +1 more source

Investigation of the spin-forbidden process in thymine [PDF]

open access: yesHemijska Industrija, 2012
The intersystem crossing rate from the lowest singlet to the lowest triplet state of thymine was studied by means of the ab initio methods. The rate was calculated employing the time-dependent approach based on the correlation function.
Etinski Mihajlo R.
doaj   +1 more source

singlet state

open access: yes, 2014
Citation: 'singlet state' in the IUPAC Compendium of Chemical Terminology, 3rd ed.; International Union of Pure and Applied Chemistry; 2006. Online version 3.0.1, 2019. 10.1351/goldbook.S05699 • License: The IUPAC Gold Book is licensed under Creative Commons Attribution-ShareAlike CC BY-SA 4.0 International for individual terms. Requests for commercial
openaire   +1 more source

Long live the singlet state! [PDF]

open access: yesJournal of Magnetic Resonance, 2019
The field of long-lived states in NMR is reviewed. The relationship of long-lived-state phenomena to those associated with spin isomerism is discussed. A brief overview is given of key developments in the field of long-lived states, including chemical symmetry-switching, the role of magnetic equivalence and magnetic inequivalence, long-lived coherences,
openaire   +3 more sources

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