Activation of hydrogen peroxide by p-nitrophenyl chloroformate. Indication for in situ formation of carbon trioxide and evidence for singlet oxygen generation by the chloride-catalysed decomposition of hydrogen peroxide in acidic solution

2000 ◽  
pp. 535-543
Author(s):  
Carsten Bender ◽  
Hans-Dieter Brauer
Keyword(s):  
Hydrogen Peroxide ◽  
Singlet Oxygen ◽  
Acidic Solution ◽  
Oxygen Generation ◽  
Singlet Oxygen Generation ◽  
In Situ Formation ◽  
Activation Of Hydrogen Peroxide

Glycol-modified molybdate catalysts for efficient singlet oxygen generation from hydrogen peroxide

2007 ◽  
pp. 2333 ◽  
Author(s):  
Joos Wahlen ◽  
Dirk De Vos ◽  
Walther Jary ◽  
Paul Alsters ◽  
Pierre Jacobs
Keyword(s):  
Hydrogen Peroxide ◽  
Singlet Oxygen ◽  
Oxygen Generation ◽  
Singlet Oxygen Generation

scholarly journals A self-reporting AIE probe with a built-in singlet oxygen sensor for targeted photodynamic ablation of cancer cells

2016 ◽  
Vol 7 (3) ◽  
pp. 1862-1866 ◽  
Author(s):  
Youyong Yuan ◽  
Chong-Jing Zhang ◽  
Shidang Xu ◽  
Bin Liu
Keyword(s):  
Photodynamic Therapy ◽  
Singlet Oxygen ◽  
Cancer Cells ◽  
Oxygen Sensor ◽  
Aggregation Induced Emission ◽  
Oxygen Generation ◽  
Singlet Oxygen Generation

A probe for the in situ monitoring of singlet oxygen generation during targeted theranostic photodynamic therapy is developed based on a photosensitizer with aggregation-induced emission (AIE) characteristics and conjugated to a fluorogenic rhodol dye via a singlet oxygen cleavable linker.

scholarly journals Singlet Oxygen Generation in Classical Fenton Chemistry

2019 ◽  
Author(s):  
Andrew Carrier ◽  
Saher Hamid ◽  
David Oakley ◽  
Ken Oakes ◽  
Xu Zhang
Keyword(s):  
Hydrogen Peroxide ◽  
Singlet Oxygen ◽  
Fenton Reaction ◽  
Organic Molecules ◽  
Oxygen Species ◽  
Fenton Chemistry ◽  
Oxygen Generation ◽  
Singlet Oxygen Generation ◽  
Fenton Reagents ◽  
High Valent

<div><div><div><p>The Fenton reaction, the Fe-catalyzed conversion of hydrogen peroxide to reactive oxygen species (ROS) was discovered more than a century ago. It occurs widely in nature because of the ubiquity of Fenton reagents, i.e., Fe and H2O2, and ROS in environmental and biological systems; however, its mechanisms and the identity of the ROS generated under varying conditions have remained controversial. The widely accepted mechanism is that of successive oxidation and reduction of Fe2+ and Fe3+ by hydrogen peroxide to form ·OH and O2-·, respectively, where ·OH is implicated as the primary oxidant. However, the formation of high-valent Fe4+=O species has also been implicated. Herein, by systematically dissecting the contributions of various ROS species generated in the classical Fenton reaction by using specific ROS traps and scavengers, we identified that singlet oxygen (1O2) is the main ROS from pH 4–7. In contrast, although ·OH is produced in measurable quantities, it was not a major contributor to the oxidation of organic molecules.</p></div></div></div>

scholarly journals Singlet Oxygen Generation in Classical Fenton Chemistry

2019 ◽  
Author(s):  
Andrew Carrier ◽  
Saher Hamid ◽  
David Oakley ◽  
Ken Oakes ◽  
Xu Zhang
Keyword(s):  
Hydrogen Peroxide ◽  
Singlet Oxygen ◽  
Fenton Reaction ◽  
Organic Molecules ◽  
Oxygen Species ◽  
Fenton Chemistry ◽  
Oxygen Generation ◽  
Singlet Oxygen Generation ◽  
Fenton Reagents ◽  
High Valent

<div><div><div><p>The Fenton reaction, the Fe-catalyzed conversion of hydrogen peroxide to reactive oxygen species (ROS) was discovered more than a century ago. It occurs widely in nature because of the ubiquity of Fenton reagents, i.e., Fe and H2O2, and ROS in environmental and biological systems; however, its mechanisms and the identity of the ROS generated under varying conditions have remained controversial. The widely accepted mechanism is that of successive oxidation and reduction of Fe2+ and Fe3+ by hydrogen peroxide to form ·OH and O2-·, respectively, where ·OH is implicated as the primary oxidant. However, the formation of high-valent Fe4+=O species has also been implicated. Herein, by systematically dissecting the contributions of various ROS species generated in the classical Fenton reaction by using specific ROS traps and scavengers, we identified that singlet oxygen (1O2) is the main ROS from pH 4–7. In contrast, although ·OH is produced in measurable quantities, it was not a major contributor to the oxidation of organic molecules.</p></div></div></div>

Singlet Oxygen Generation from [Bis(trifluoroacetoxy)iodo]benzene and Hydrogen Peroxide

2009 ◽  
Vol 74 (12) ◽  
pp. 4560-4564 ◽  
Author(s):  
Mustafa Catir ◽  
Hamdullah Kilic ◽  
Véronique Nardello-Rataj ◽  
Jean-Marie Aubry ◽  
Cavit Kazaz
Keyword(s):  
Hydrogen Peroxide ◽  
Singlet Oxygen ◽  
Oxygen Generation ◽  
Singlet Oxygen Generation

Design of Novel Photosensitizers and Controlled Singlet Oxygen Generation for Photodynamic Therapy

2021 ◽  
Author(s):  
Esra Tanrıverdi Eçik ◽  
Onur BULUT ◽  
Hasan Hüseyin Kazan ◽  
Elif Şenkuytu ◽  
Bunyemin Cosut
Keyword(s):  
Photodynamic Therapy ◽  
Cancer Treatment ◽  
Singlet Oxygen ◽  
Side Effect ◽  
Side Effect Profile ◽  
High Ability ◽  
Lower Side ◽  
Oxygen Generation ◽  
Singlet Oxygen Generation ◽  
Promising Strategy

Photodynamic therapy (PDT) is a promising strategy in cancer treatment with its relatively lower side effect profile. Undoubtedly, the key component of PDT is the photosensitizers with a high ability...

Achieving high singlet-oxygen generation by applying the heavy-atom effect to thermally activated delayed fluorescent materials

2021 ◽  
Author(s):  
Ya-Fang Xiao ◽  
Jia-Xiong Chen ◽  
Wen-Cheng Chen ◽  
Xiuli Zheng ◽  
Chen Cao ◽  
...  
Keyword(s):  
Singlet Oxygen ◽  
Heavy Atom ◽  
Synergetic Effect ◽  
Heavy Atom Effect ◽  
Oxygen Generation ◽  
Thermally Activated ◽  
Singlet Oxygen Generation ◽  
Fluorescent Materials ◽  
Atom Effect

Applying the heavy-atom effect to TADF photosensitizers achieves ultra-high 1O2 generation (ФΔ = 0.91) by the synergetic effect of small ΔEST and considerable SOC.

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