Dye-sensitized photooxidation of tocopherols. Correlation between singlet oxygen reactivity and vitamin E activity

Biochemistry ◽  
1972 ◽  
Vol 11 (4) ◽  
pp. 606-608 ◽  
Author(s):  
G. W. Grams ◽  
K. Eskins
Keyword(s):  
Vitamin E ◽  
Singlet Oxygen ◽  
Dye Sensitized ◽  
Oxygen Reactivity

Behavior of Singlet Oxygen in Vitamin E Emulsion

2008 ◽  
Vol 81 (3) ◽  
pp. 345-347 ◽  
Author(s):  
Keishi Ohara ◽  
Takashi Origuchi ◽  
Kanako Kawanishi ◽  
Shin-ichi Nagaoka
Keyword(s):  
Vitamin E ◽  
Singlet Oxygen

Singlet Oxygen Reactivity with Carbonate Solvents Used for Li-Ion Battery Electrolytes

2018 ◽  
Vol 122 (45) ◽  
pp. 8828-8839 ◽  
Author(s):  
Anna T. S. Freiberg ◽  
Matthias K. Roos ◽  
Johannes Wandt ◽  
Regina de Vivie-Riedle ◽  
Hubert A. Gasteiger
Keyword(s):  
Singlet Oxygen ◽  
Li Ion Battery ◽  
Li Ion ◽  
Oxygen Reactivity

THE SINGLET OXYGEN REACTIVITY OF BILIVERDIN

1977 ◽  
Vol 25 (3) ◽  
pp. 243-248 ◽  
Author(s):  
I. B. C. Mathewn ◽  
M. M. Toledo
Keyword(s):  
Singlet Oxygen ◽  
Oxygen Reactivity

New Insight into the Reaction of Singlet Oxygen with Sulfur-Containing Cyclic Alkenes:  Dye-Sensitized Photooxygenation of 5,6-Dihydro-1,4-dithiins

2007 ◽  
Vol 72 (26) ◽  
pp. 10075-10080 ◽  
Author(s):  
Flavio Cermola ◽  
Annalisa Guaragna ◽  
Maria Rosaria Iesce ◽  
Giovanni Palumbo ◽  
Raffaella Purcaro ◽  
...  
Keyword(s):  
Singlet Oxygen ◽  
Dye Sensitized ◽  
Sulfur Containing ◽  
Insight Into ◽  
Cyclic Alkenes

Synthesis and singlet oxygen production of azaphthalocyanines bearing functional derivatives of carboxylic acid

2006 ◽  
Vol 10 (02) ◽  
pp. 122-131 ◽  
Author(s):  
Zbynek Musil ◽  
Petr Zimcik ◽  
Miroslav Miletin ◽  
Kamil Kopecky ◽  
Marek Link ◽  
...  
Keyword(s):  
Carboxylic Acid ◽  
Singlet Oxygen ◽  
Hexanoic Acid ◽  
Oxygen Production ◽  
Metal Free ◽  
Dye Sensitized ◽  
Structure Activity ◽  
Functional Derivatives ◽  
Derivatives Of ◽  
Free Magnesium

New metal-free, magnesium and zinc azaphthalocyanines ( AzaPc ) were prepared from 6-(3-tert-butylsulfany1-5,6-dicyanopyrazine-2-ylamino)hexanoic acid and its butylester and N,N-diethylamide. Their singlet oxygen production was measured by a dye-sensitized photooxidation of 1,3-diphenylisobenzofuran ( DPBF ) and ΦΔ values were calculated. It was found that the presence of carboxylic acid in the structure of AzaPc decreases their singlet oxygen production. Singlet oxygen activity of the newly prepared compounds (containing mixed alkylamino and alkylsulfanyl peripheral substituents) lies between purely alkylsulfanyl and alkylamino derivatives of AzaPc . This fact further supports previously proposed structure-activity relationships, where alkylsulfanyl derivatives belong to the best singlet oxygen producers while the presence of alkylamino substituents in the structure rapidly decreases their photodynamic properties.

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