Electrochemically Polymerized Terthiopehene–C60 Dyads for the Photochemical Generation of Singlet Oxygen

2019 ◽  
Vol 123 (42) ◽  
pp. 25915-25924 ◽  
Author(s):  
Agata Blacha-Grzechnik ◽  
Maciej Krzywiecki ◽  
Radoslaw Motyka ◽  
Małgorzata Czichy
Keyword(s):  
Singlet Oxygen ◽  
Photochemical Generation

Electropolymerized phenothiazines for the photochemical generation of singlet oxygen

2014 ◽  
Vol 141 ◽  
pp. 182-188 ◽  
Author(s):  
Katarzyna Piwowar ◽  
Agata Blacha-Grzechnik ◽  
Roman Turczyn ◽  
Jerzy Zak
Keyword(s):  
Singlet Oxygen ◽  
Photochemical Generation

scholarly journals Improving photocatalytic oxygenation mediated by polymer supported photosensitizers using semiconductor quantum dots as ‘light antennas’

RSC Advances ◽  
2017 ◽  
Vol 7 (56) ◽  
pp. 35154-35158 ◽  
Author(s):  
Víctor Fabregat ◽  
M. Isabel Burguete ◽  
Santiago V. Luis ◽  
Francisco Galindo
Keyword(s):  
Quantum Dots ◽  
Singlet Oxygen ◽  
Semiconductor Nanoparticles ◽  
Semiconductor Quantum Dots ◽  
Photochemical Generation ◽  
Polymer Supported

Semiconductor nanoparticles (quantum dots) sensitize the photochemical generation of singlet oxygen at the surface of a photoactive polymer.

scholarly journals Induction of benzo[a]pyrene Mono-oxygenase in liver cell culture by the photochemical generation of active oxygen species. Evidence for the involvement of singlet oxygen and the formation of a stable inducing intermediate

1976 ◽  
Vol 158 (1) ◽  
pp. 109-117 ◽  
Author(s):  
A J Paine
Keyword(s):  
Singlet Oxygen ◽  
Culture Medium ◽  
Enzyme System ◽  
Active Oxygen Species ◽  
Active Oxygen ◽  
Oxygen Species ◽  
Photochemical Generation ◽  
Single Oxygen ◽  
Cytochrome P 450 ◽  
Stimulation Of

1. The photochemical generation of excited states of oxygen in liver cell culture by the mild ilumination of culture medium containing riboflavin, results in stimulation of benzo[a]pyrene 3-mono-oxygenase, a cytochrome P-450-linked mono-oxygenase. 2. The same large increase in mono-oxygenase activity was found when medium containing riboflavin was illuminated in the absence of cells and then stored in the dark for 24h before contact with the cells. From this it may be inferred that stimulation is due to the formation of a stable inducer in the culture medium. Further experiments indicate that the stable inducer is due to the photo-oxidation of an amino acid. 3. Evidence that singlet oxygen is responsible for initiating the stimulation of the mono-oxygenase is based on the use of molecules that scavenge particular active oxygen species. Of all the scavengers tested, only those that scavenge single oxygen inhibited the stimulation. 4. A hypothesis is developed to relate the stimulation of the mono-oxygenase by singlet oxygen in cultured cells to the regulation of the cytochrome P-450 enzyme system in vivo. It is suggested that single oxygen generation within cells may be a common factor linking the many structurally diverse inducers of the enzyme system.

Phenothiazines grafted on the electrode surface from diazonium salts as molecular layers for photochemical generation of singlet oxygen

2015 ◽  
Vol 182 ◽  
pp. 1085-1092 ◽  
Author(s):  
Agata Blacha-Grzechnik ◽  
Katarzyna Piwowar ◽  
Piotr Koscielniak ◽  
Monika Kwoka ◽  
Jacek Szuber ◽  
...  
Keyword(s):  
Singlet Oxygen ◽  
Electrode Surface ◽  
Diazonium Salts ◽  
Photochemical Generation ◽  
Molecular Layers

Fluoroquinolone Antimicrobials: Singlet Oxygen, Superoxide and Phototoxicity

1998 ◽  
Vol 67 (4) ◽  
pp. 399 ◽  
Author(s):  
Lydia J. Martínez ◽  
Robert H. Sik ◽  
Colin F. Chignell
Keyword(s):  
Singlet Oxygen
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