scholarly journals Mechanism of Dye-sensitized Photooxidation of Tryptophan, Tryptamine, and Their Derivatives. Singlet Oxygen Process in Competition with Type I Process

1982 ◽  
Vol 55 (9) ◽  
pp. 2959-2964 ◽  
Author(s):  
Kenzo Inoue ◽  
Teruo Matsuura ◽  
Isao Saito
Keyword(s):  
Singlet Oxygen ◽  
Type I ◽  
Dye Sensitized ◽  
Oxygen Process ◽  
Photooxidation Of Tryptophan

Synthesis and in vitro cytotoxicity evaluation of ruthenium polypyridyl-sensitized paramagnetic titania nanoparticles for photodynamic therapy

RSC Advances ◽  
2016 ◽  
Vol 6 (53) ◽  
pp. 47520-47529 ◽  
Author(s):  
Mohammad H. Sakr ◽  
Najeeb M. Halabi ◽  
Leen N. Kalash ◽  
Sara I. Al-Ghadban ◽  
Mayyasa K. Rammah ◽  
...  
Keyword(s):  
A549 Cells ◽  
Cancer Cell Line ◽  
In Vitro Cytotoxicity ◽  
Lung Cancer Cell Line ◽  
Titania Nanoparticles ◽  
Human Lung Cancer ◽  
Type I ◽  
Dye Sensitized ◽  
Photo Dynamic Therapy

We demonstrate the effective cytotoxic properties of a dye-sensitized metal oxide in an in vitro model of a human lung cancer cell line (A549 cells) upon light irradiation, where a type I mechanism photo-dynamic therapy is realized exclusively.

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

scholarly journals Continuous-flow synthesis and application of polymer-supported BODIPY Photosensitisers for the generation of singlet oxygen; process optimised by in-line NMR spectroscopy

2020 ◽  
Vol 10 (1) ◽  
pp. 327-345 ◽  
Author(s):  
Christopher G. Thomson ◽  
Callum M. S. Jones ◽  
Georgina Rosair ◽  
David Ellis ◽  
Jose Marques-Hueso ◽  
...  
Keyword(s):  
Nmr Spectroscopy ◽  
Singlet Oxygen ◽  
Continuous Flow ◽  
Flow Synthesis ◽  
Polymer Supported ◽  
Oxygen Process

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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