Polymer-based sensitizers for the formation of singlet oxygen: new studies of polymeric derivatives of rose bengal

1985 ◽  
Vol 18 (6) ◽  
pp. 1245-1253 ◽  
Author(s):  
Jerzy Paczkowski ◽  
D. C. Neckers
Keyword(s):  
Singlet Oxygen ◽  
Rose Bengal ◽  
Derivatives Of

Singlet oxygen photogeneration by ionized and un-ionized derivatives of Rose Bengal and Eosin Y in diluted solutions

1990 ◽  
Vol 53 (2) ◽  
pp. 199-210 ◽  
Author(s):  
F. Amat-Guerri ◽  
M.M.C. López-González ◽  
R. Martínez-Utrilla ◽  
R. Sastre
Keyword(s):  
Singlet Oxygen ◽  
Rose Bengal ◽  
Eosin Y ◽  
Derivatives Of

Letters to the Editor

PEDIATRICS ◽  
1981 ◽  
Vol 67 (6) ◽  
pp. 930-931
Author(s):  
J. Donald Ostrow ◽  
Arnold N. Cohen
Keyword(s):  
Singlet Oxygen ◽  
Rose Bengal ◽  
Review Article ◽  
Letters To The Editor ◽  
Major Mechanism ◽  
Gunn Rats

We are delighted to respond to the criticisms of Drs McDonagh and Lightner of our review article on phototherapy (Pediatrics 65:740, 1980). 1 and 2. Dr McDonagh correctly notes that he did not administer rose bengal but rather hemato-porphyrin to Gunn rats in showing that a singlet oxygen photosensitizer could dramatically accelerate the photocatabolism of bilirubin in these animals.1 However, it is not appropriate for McDonagh to deny that he proposed that generation and addition of singlet oxygen is a major mechanism of phototherapy, as the experiment cited above was used as evidence for this view.

scholarly journals Detection of singlet oxygen luminescence for experimental corneal rose bengal photodynamic antimicrobial therapy

2020 ◽  
Vol 12 (1) ◽  
pp. 272
Author(s):  
Jeffrey C. Peterson ◽  
Esdras Arrieta ◽  
Marco Ruggeri ◽  
Juan D. Silgado ◽  
Keenan J. Mintz ◽  
...  
Keyword(s):  
Singlet Oxygen ◽  
Antimicrobial Therapy ◽  
Rose Bengal ◽  
Photodynamic Antimicrobial Therapy

Comparison of Different Analytical Methods for Determining Singlet Oxygen Photogenerated from Rose Bengal

2012 ◽  
pp. 89-91
Author(s):  
Kirika Ishiyama ◽  
Keisuke Nakamura ◽  
Hiroyo Ikai ◽  
Taro Kanno ◽  
Keiichi Sasaki ◽  
...  
Keyword(s):  
Singlet Oxygen ◽  
Rose Bengal ◽  
Analytical Methods

Tuning photosensitized singlet oxygen production from microgels synthesized by polymerization in aqueous dispersed media

2019 ◽  
Vol 10 (23) ◽  
pp. 3170-3179 ◽  
Author(s):  
Luca Petrizza ◽  
Mickael Le Bechec ◽  
Emile Decompte ◽  
Hind El Hadri ◽  
Sylvie Lacombe ◽  
...  
Keyword(s):  
Singlet Oxygen ◽  
Vinyl Acetate ◽  
Rose Bengal ◽  
Oxygen Production ◽  
Polymer Colloids ◽  
Grafted Polymer ◽  
Dispersed Media ◽  
Aqueous Dispersed Media ◽  
Vinyl Benzyl

Miniemulsion copolymerization of vinyl acetate, N-vinylcaprolactam, vinyl benzyl Rose Bengal and divinyl adipate to synthesize switchable photosensitizer-grafted polymer colloids for interfacial photooxygenation reactions.

scholarly journals New polymeric photosensitizers

2001 ◽  
Vol 73 (3) ◽  
pp. 491-495 ◽  
Author(s):  
Maria Nowakowska ◽  
Mariusz Kepczynski ◽  
Krzysztof Szczubialka
Keyword(s):  
Singlet Oxygen ◽  
Polymer Chain ◽  
Rose Bengal ◽  
Quantum Yields ◽  
Oxygen Production ◽  
Oxygen Formation ◽  
Singlet Oxygen Formation

Novel polymeric photosensitizers for singlet oxygen production in water are described. The polymers contain rose bengal (4,5,6,7-tetrachloro-2',4',5',7'­tetraiodo-fluorescein) chromophores covalently attached to the polymer chain. The quantum yields of singlet oxygen formation and photooxidation of phenol in water have been determined. The methods of separation of photosensitizer from the reactants after completion of reaction have been established.

Robust Organic Photosensitizers Immobilized on a Vinylimidazolium Functionalized Support for Singlet Oxygen Generation under Continuous-Flow Conditions

Synlett ◽  
2020 ◽  
Vol 31 (05) ◽  
pp. 497-501 ◽  
Author(s):  
Koichiro Masuda ◽  
Yao Wang ◽  
Shun-ya Onozawa ◽  
Shigeru Shimada ◽  
Nagatoshi Koumura ◽  
...  
Keyword(s):  
Singlet Oxygen ◽  
Rose Bengal ◽  
Crucial Role ◽  
Continuous Flow ◽  
Organic Molecules ◽  
Continuous Operation ◽  
Flow Conditions ◽  
Oxygen Generation ◽  
Singlet Oxygen Generation ◽  
Flow Reaction

Rose Bengal was immobilized on a vinylimidazolium functionalized support, and the heterogeneous organic photosensitizer thus prepared was applied for photooxidation reactions of organic molecules under continuous-flow conditions. Substituents of the cation part of the support were found to play a crucial role in determining the lifetime of the catalyst. More than 11 days continuous operation of a flow reaction was achieved.

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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