Results 11 to 20 of about 1,254,309 (209)
EPJ Web of Conferences, 2017 The dependence of the efficiency of singlet oxygen (1Δg) generation upon excitation of photosensitizer at different wavelength was observed for several derivatives of palladium porphyrin in carbon tetrachloride.
Starukhin A. +4 more
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Stokes Components of Raman-Induced Singlet Oxygen
OxygenWe studied the Stokes signals generated following the Raman photoexcitation of dissolved oxygen in water. When a water sample is pumped with intense nanosecond radiation, Stokes signals of different origins are generated.
Aristides Marcano Olaizola +2 more
doaj +4 more sources
PhotochemWe determine the efficiency of generating singlet oxygen molecules through Raman excitation in distilled water. Focused nanosecond light pulses in the spectral blue region induce a Raman transition toward the singlet oxygen state, generating a Stokes ...
Aristides Marcano Olaizola
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Singlet oxygen luminescence detector based on low-cost InGaAs avalanche photodiode [PDF]
HardwareX, 2021 Molecular oxygen excited to singlet state (Singlet oxygen, 1O2) becomes highly reactive and cytotoxic chemical. 1O2 is commonly generated by photoexcitation of dyes (photosensitizers), including the photodynamic therapy and diagnostics of cancer. However,
Alexander E. Moskalensky +3 more
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Characterizing excited triplet states of synthetic eumelanin and pheomelanin by the application of selected diene probes [PDF]
Scientific ReportsAlthough the role of excited triplet states in aerobic photochemistry of melanin pigments has been implicated, the molecular origin of the melanin subunits excited to triplet states and their key thermodynamic parameters remain unknown.
Krystian Mokrzyński +2 more
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Photoexcitation of Tumor-Targeted Corroles Induces Singlet Oxygen-Mediated Augmentation of Cytotoxicity [PDF]
Journal of Controlled Release, 2012 The tumor-targeted corrole particle, HerGa, displays preferential toxicity to tumors in vivo and can be tracked via fluorescence for simultaneous detection, imaging, and treatment. We have recently uncovered an additional feature of HerGa in that its cytotoxicity is enhanced by light irradiation.
Felix Alonso-Valenteen +2 more
exaly +4 more sources
Mechanism of Production of Singlet Oxygen on Photoexcitation of Drugs Inducing Photosensitivity [PDF]
Bulletin of the Chemical Society of Japan, 1991 Abstract The mechanism and active species of drug-induced photosensitive reactions were investigated by measuring the absorption spectra of the transient species on photoexcitation as well as by determining the efficiency of singlet oxygen production on quenching by oxygen of the excited state of drugs.
Tatsuo Arai +2 more
exaly +2 more sources
Visible‐light‐promoted catalyst‐free benzylic C‐H oxidation using molecular oxygen as a green oxidant [PDF]
Smart MoleculesHerein, we report a catalyst‐ and additive‐free strategy for the visible‐light‐promoted carbonylative oxidation of benzylic C‐H bonds employing molecular oxygen as the sole oxidant.
Jianing Li +6 more
doaj +2 more sources
Near-Infrared Phosphorescence of Raman Photogenerated Singlet Oxygen
PhotochemWe 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 +3 more sources
Pyridinium- and bromine-substituted distyryl-BODIPY dyes for mitochondria-targeted photodynamic therapy [PDF]
Scientific ReportsA series of 1-methylpyridinium-substituted brominated distyryl-BODIPY dyes, PyBXI (X = H, M, or Br), was synthesized to achieve cooperative singlet oxygen (1O2) production through qualitatively different dual intersystem crossing (ISC) pathways: spin ...
Chanwoo Kim +11 more
doaj +2 more sources