Results 81 to 90 of about 170,894 (344)

Near-Infrared Phosphorescence of Raman Photogenerated Singlet Oxygen

open access: yesPhotochem
We report on the phosphorescence of singlet oxygen photogenerated through a stimulated Raman process. Nanosecond radiation in the green spectral region focused on hexane and carbon tetrachloride induces a Raman transition of the dissolved solvent oxygen ...
Aristides Marcano Olaizola
doaj   +1 more source

Oxygen-catalysed sequential singlet fission

open access: yesNature Communications, 2019
Singlet fission is a promising carrier multiplication process, where a singlet exciton is split in two triplet states. Here the authors propose an oxygen-assisted two-step mechanism for singlet fission accounting for ~ 40% triplet quantum yield in dilute
Nikolaus Wollscheid   +7 more
doaj   +1 more source

Data on detection of singlet oxygen, hydroxyl radical and organic radical in Arabidopsis thaliana

open access: yesData in Brief, 2018
This article contains data related to the research article entitled, “Organic radical imaging in plants: Focus on protein radicals” (Kumar et al., 2018).
Aditya Kumar   +3 more
doaj   +1 more source

Singlet oxygen production in photosynthesis [PDF]

open access: yesJournal of Experimental Botany, 2004
A photosynthetic organism is subjected to photo-oxidative stress when more light energy is absorbed than is used in photosynthesis. In the light, highly reactive singlet oxygen can be produced via triplet chlorophyll formation in the reaction centre of photosystem II and in the antenna system. In the antenna, triplet chlorophyll is produced directly by
openaire   +3 more sources

Exploring Pb‐Chelation Chemistry in the Crystallization Dynamics of Halide Perovskites

open access: yesAdvanced Functional Materials, EarlyView.
A mechanism of how Pb‐chelation chemistry governs coordination geometry and initial nucleation behavior at the precursor level of halide perovskite, by regulating the deprotonation state of a chelating additive, is elucidated. This allows for innovative reaction‐system design principles that promote coherent growth while suppressing defect formation in
Byeong Jun Kim   +13 more
wiley   +1 more source

Singlet oxygen generator for a solar powered chemically pumped iodine laser [PDF]

open access: yes
The potential of solid phase endoperoxides as a means to produce single-delta oxygen in the gas phase in concentrations useful to chemical oxygen-iodine lasers was investigated.
Busch, G. E.
core   +1 more source

The singlet-triplet magnetism and induced spin fluctuations in the high-$T_c$ copper oxides

open access: yes, 1997
High-$T_c$ cuprates like $La_{2-x}Sr_{x}CuO_{4}$ and $YBa_{2-x}Cu_{3}O_{6+x}$ are considered as a system of the electron and hole polar pseudo-Jahn-Teller $CuO_{4}$ centers $[{CuO}_{4}^{7-}]_{JT}$ and $[CuO_{4}^{5-}]_{JT}$, respectively, or a system of ...
A.S Moskvin   +26 more
core   +1 more source

High‐Index, Low‐Loss Optical Material Platforms for Ultra‐Broadband Ultraviolet‐to‐Visible Achromatic Metalenses

open access: yesAdvanced Functional Materials, EarlyView.
An integrated material platform combining engineered SiNx thin films and printable ZrO2 nanoparticle‐embedded resin enables broadband achromatic metalenses from the ultraviolet to visible range. The demonstrated meta‐optics achieve near‐diffraction‐limited focusing with minimal chromatic aberration.
Hyunjung Kang   +3 more
wiley   +1 more source

Singlet oxygen-mediated selective C–H bond hydroperoxidation of ethereal hydrocarbons

open access: yesNature Communications, 2017
Singlet oxygen is known to react with carbon–carbon double bonds. Here, the authors show the unusual functionalization of α-ethereal C–H bonds mediated by singlet oxygen under mild conditions to afford lactones and hydroperoxide products.
Arunachalam Sagadevan   +2 more
doaj   +1 more source

Iridium complexes for the application of photodynamic therapy

open access: yes上海师范大学学报. 自然科学版, 2015
Photodynamic therapy can destruct tumor cells by singlet oxygen which is generated via a photodynamic reaction of the photosensitizer under a specfic excitation wavelength.Due to the heavy atom effect of metal iridium,iridiumcomplexes are excited by ...
SHI Min   +3 more
doaj   +1 more source

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