Results 1 to 10 of about 36,012 (133)

Electronic Structures and Photodetachment of TeO2, TeO3, and HTeO4 Anions: A Cryogenic Photoelectron Spectroscopic Study [PDF]

open access: yesMolecules
Cryogenic anion photoelectron spectroscopy combined with quantum chemical calculations was employed to investigate the electronic structures and photodetachment properties of TeO2−, TeO3−, and HTeO4− anions.
Fan Yang   +8 more
doaj   +2 more sources

A Thorough Understanding of Methylrhodium(III)–Porphyrin Photophysics: A DFT/TDDFT Study [PDF]

open access: yesMolecules
Rhodium–porphyrin complexes are characterised by their ability to activate C-H and C-C bonds and, therefore, find applications in synthesis and catalysis. Axial rhodoporphyrin ligands are susceptible to photodissociation under the influence of light. DFT
Piotr Lodowski, Maria Jaworska
doaj   +2 more sources

Direct observation of two-channel photodissociation of carbon monoxide from the hemoglobin subunits [PDF]

open access: yesNature Communications
Determining dynamics of bond breaking between carbon monoxide (CO) and heme proteins is essential to understand the interplay between protein function and dynamics, which is one of the fundamental challenges of physical biology.
Sergei V. Lepeshkevich   +7 more
doaj   +2 more sources

Photodissociation-driven photoacoustic spectroscopy with UV-LEDs for ozone detection [PDF]

open access: yesPhotoacoustics
This study presents the development and evaluation of a UV-LED based photoacoustic (PA) measurement system for ozone (O3) detection to demonstrate its potential for low-cost and accurate sensing while for the first time addressing the importance of ...
Lukas Escher   +5 more
doaj   +2 more sources

Conformational-Dependent Photodissociation of Glycolic Acid in an Argon Matrix

open access: yesPhotochem, 2023
Ultraviolet-induced photodissociation and photo-isomerization of the three most stable conformers (SSC, GAC, and AAT) of glycolic acid are investigated in a low-temperature solid argon matrix using FTIR spectroscopy and employing laser radiation with ...
Jussi Ahokas   +6 more
doaj   +1 more source

Photodissociation of water molecule at short photon wavelengths: Dynamical studies

open access: yesFrontiers in Physics, 2023
In our last study [J. Phys. B At. Mol. Opt. Phys. 54, 125,102 (2021).], we reported the ab initio calculation of the full-dimensional potential energy surfaces of water molecule including 9 A’ and 9 A” states in Cs symmetry.
Yigeng Peng   +10 more
doaj   +1 more source

Data for Photodissociation of Some Small Molecular Ions Relevant for Astrochemistry and Laboratory Investigation

open access: yesData, 2022
The calculated photodissociation data of some small molecular ions have been reported. The cross-sections and spectral rate coefficients data have been studied using a quantum mechanical method. The plasma parameters, i.e., conditions, cover temperatures
Vladimir A. Srećković   +5 more
doaj   +1 more source

The Role of Norrish Type-I Chemistry in Photoactive Drugs: An ab initio Study of a Cyclopropenone-Enediyne Drug Precursor

open access: yesFrontiers in Chemistry, 2020
We present a contemporary mechanistic description of the light-driven conversion of cyclopropenone containing enediyne (CPE) precusors to ring-opened species amenable to further Bergman cyclization and formation of stable biradical species that have been
Spencer J. Léger   +4 more
doaj   +1 more source

Photoinduced bond oscillations in ironpentacarbonyl give delayed synchronous bursts of carbonmonoxide release

open access: yesNature Communications, 2022
The photodissociation of transition metal carbonyls is involved in catalysis and synthetic processes. Here the authors, using semi-classical excited state molecular dynamics, observe details of the early stage dynamics in the photodissociation of Fe(CO)5,
Ambar Banerjee   +6 more
doaj   +1 more source

A Theoretical Study of Temperature-dependent Photodissociation Cross Sections and Rates for O2

open access: yesThe Astrophysical Journal Supplement Series, 2023
The photodissociation of O _2 is thought to play a vital role in blocking UV radiation in the Earth’s atmosphere and likely has great importance in characterizing exoplanetary atmospheres.
Zhi Qin   +3 more
doaj   +1 more source

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