Results 21 to 30 of about 1,254,309 (209)
Seasonal variations in the production of singlet oxygen and organic triplet excited states in aqueous PM2.5 in Hong Kong SAR, South China [PDF]
Atmospheric Chemistry and Physics, 2023 Photooxidants drive many atmospheric chemical processes. The photoexcitation of light-absorbing organic compounds (i.e., brown carbon, BrC) in atmospheric waters can lead to the generation of reactive organic triplet excited states (3C∗), which can ...
Y. Lyu +5 more
doaj +1 more source
Recent Development of Heavy Atom-Free Triplet Photosensitizers for Photodynamic Therapy
Applied Sciences, 2022 Photodynamic therapy (PDT) is an attractive method for cancer treatment. Triplet photosensitizers (PSs) are critical for this method; upon photoexcitation, efficient intersystem crossing (ISC) occurs for triplet PSs, the triplet-excited state of the ...
Xiao Xiao +3 more
doaj +1 more source
Singlet oxygen formation from photoexcited P3HT:PCBM films applied in oxidation reactions
Materials Advances, 2022 P3HT:PCBM layers deposited on a glass substrate by spin-coating can be considered a singlet oxygen source under visible-light illumination, and they can be applied in fine-chemicals synthesis.
Aleksandra Nyga +8 more
openaire +3 more sources
Scientific Reports, 2022 Singlet oxygen (1O2), one of the most sought-after species in oxidative chemical reactions and photodynamic cancer therapy, is activated and neutralized in the atmosphere and living cells.
Devika Sasikumar +6 more
doaj +1 more source
Melanin, lipofuscin and the effects of visible light in the skin
Journal of Photochemistry and Photobiology, 2021 Photoexcitation of endogenous photosensitizers (ePS) in the human skin by sunlight culminates with the formation of electronic excited states, such as triplet excited states, singlet oxygen, and a variety of reactive oxygen and nitrogen species, either ...
Paulo Newton Tonolli +2 more
doaj +1 more source
Transition Metal Isocorroles as Singlet Oxygen Sensitizers [PDF]
, 2023 Building on a highly efficient synthesis of pyrrole-appended isocorroles, we have worked out conditions for manganese, palladium, and platinum insertion into free-base 5/10-(2-pyrrolyl)-5,10,15-tris(4-methylphenyl)isocorrole, H2[5/10-(2-py)TpMePiC ...
Gael, Ung +7 more
core +2 more sources
Communications Chemistry, 2023 In photodynamic therapy (PDT), light-sensitive photosensitizers produce reactive oxygen species (ROS) after irradiation in the presence of oxygen. Atomically-precise thiolate-protected gold nanoclusters are molecule-like nanostructures with discrete ...
Hussein Fakhouri +10 more
doaj +1 more source
Transition Metal Azahemiporphycenes as Singlet Oxygen Sensitizers [PDF]
, 2023 Using free-base tris(p-X-phenyl)corrole (X = H, Me, OMe) as starting materials and 4-aminotriazole as the nitrogen source, we used a DDQ-mediated, room-temperature strategy for generating isocorrole synthesis to obtain the corresponding 6 ...
Abraham, Alemayehu +5 more
core +2 more sources
Proof-of-principle for two-stage photodynamic therapy: Hypoxia triggered release of singlet oxygen [PDF]
, 2020 We propose to overcome oxygen deficiency and light attenuation problems in photodynamic therapy (PDT), by separating photoexcitation and singlet oxygen delivery of the PDT process into two distinct operations to be carried out sequentially, at different ...
GÜNAYDIN, GÜRCAN +13 more
core +1 more source
Singlet oxygen discovery [PDF]
, 2021 Introduction. Singlet oxygen is perfectly suited to interact with biological macromolecules and cellular composition. Aim. The goal was to present an information about singlet oxygen discovery. Material and methods.
Anna Ciesielka, Ciesielka, Anna
core +2 more sources