Results 11 to 20 of about 75,034 (299)

Comparison of multispectral singlet oxygen luminescence dosimetry and singlet oxygen explicit dosimetry in artificial phantom. [PDF]

open access: yesJ Biomed Opt
Significance: Direct detection of singlet-state oxygen ( 1O2 ) is a critical objective in Type II photodynamic therapy (PDT) due to its pivotal role in mediating therapeutic effects.
Yang W   +9 more
europepmc   +2 more sources

Direct optical generation of singlet oxygen in the regulation of vascular tone [PDF]

open access: yes, 2022
An approach to visualization of the vascular bed with the possibility of assessing changes in blood filling and identifying diagnostically significant periodic changes in the signal by analyzing speckle images is proposed. The effect of singlet oxygen by
Eratova, Lyubov V.   +4 more
core   +1 more source

Transition Metal Azahemiporphycenes as Singlet Oxygen Sensitizers

open access: yes, 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   +1 more source

Structure-activity study of furyl aryloxazole fluorescent probes for the detection of singlet oxygen. [PDF]

open access: yesPLoS ONE, 2018
In this study, we report the synthesis and the photochemical behavior of a series of new "click-on" fluorescent probes designed to detect singlet oxygen.
Renzo P Zanocco   +4 more
doaj   +1 more source

Transition Metal Isocorroles as Singlet Oxygen Sensitizers

open access: yes, 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   +3 more
core   +1 more source

Singlet Sigma: The “Other” Singlet Oxygen in Solution [PDF]

open access: yesPhotochemistry and Photobiology, 1999
AbstractThe lowest excited electronic state of molecular oxygen, O2(a1‐DLg), is often called simply singlet oxygen. This singlet delta state is an acknowledged and well‐studied intermediate in many solution‐phase photosystems. However, the second excited electronic state of oxygen, O2(b1δg+), is also a singlet.
Weldon, D.   +3 more
openaire   +2 more sources

Phosphoprotein SAK1 is a regulator of acclimation to singlet oxygen in Chlamydomonas reinhardtii

open access: yeseLife, 2014
Singlet oxygen is a highly toxic and inevitable byproduct of oxygenic photosynthesis. The unicellular green alga Chlamydomonas reinhardtii is capable of acclimating specifically to singlet oxygen stress, but the retrograde signaling pathway from the ...
Setsuko Wakao   +7 more
doaj   +1 more source

New Photochromic α-Methylchalcones Are Highly Photostable, Even under Singlet Oxygen Conditions: Breaking the α-Methyl Michael-System Reactivity by Reversible Peroxybiradical Formation

open access: yesMolecules, 2021
The α-methylated chalcones 7a–7e behave as P-type photochromic substances with photo-stationary states (PSS) as high as 15:85 when irradiated at 350 nm.
Axel G. Griesbeck   +3 more
doaj   +1 more source

Penggunaan Larutan Ekstrak Etanol dari Temulawak Sebagai Fotosensitizer di Dalam Pemutihan (Pengelantangan) Pulp dengan Penyinaran Lampu

open access: yesDinamika Kerajinan dan Batik: Majalah Ilmiah, 2016
ABSTRAKEkstrak etanol dari temulawak (Curcuma Xanthorriza) dapat digunakan sebagai fotosensitiser pada pemutihan pulp dengan penyinaran lampu, dimana pada pemutihan ini menghasilkan oksigen singlet yang mendegradasi lignin di dalam pulp (delignifikasi ...
Arif Perdana
doaj   +1 more source

Temperature dependence of singlet oxygen generation by different photosensitizers [PDF]

open access: yesEPJ Web of Conferences, 2019
The temperature dependences of the lifetimes and the efficiency of singlet oxygen generation for a set of compounds (porphyrins, metalloporphyrins, porphycene, terrylene etc.) has been measured and characterized. Based on the character of the temperature
Starukhin Aleksander   +2 more
doaj   +1 more source

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