Multipath Oxygen-Mediated PET-RAFT Polymerization by Conjugated Organic Polymers Photocatalyst under Red LED Irradiation

2021 ◽  
Author(s):  
Zhen Lu ◽  
Hongjie Yang ◽  
Xiaoling Fu ◽  
Qiuyu Li ◽  
Longqiang Xiao ◽  
...  
Keyword(s):  
Molecular Oxygen ◽  
Superoxide Anion ◽  
Anion Radical ◽  
Raft Polymerization ◽  
Polymerization Process ◽  
Red Led ◽  
Led Irradiation ◽  
In Situ Production ◽  
Conjugated Organic Polymers

In this contribution, we propose a novel multipath aerobic-mediated reductive quenching pathway (O-RQP) for PET-RAFT polymerization process, where in situ production of superoxide anion radical from molecular oxygen was achieved...

In situ Production of Polystyrene Magnetic Nanocomposites through a Batch Suspension Polymerization Process

2011 ◽  
Vol 296 (12) ◽  
pp. 1107-1118 ◽  
Author(s):  
Juliete S. Neves ◽  
Fernando G. de Souza ◽  
Paulo A. Z. Suarez ◽  
Alexandre P. Umpierre ◽  
Fabricio Machado
Keyword(s):  
Suspension Polymerization ◽  
Polymerization Process ◽  
Magnetic Nanocomposites ◽  
In Situ Production

New technology for post-combustion abatement of carbon dioxide via an in situ generated superoxide anion-radical

RSC Advances ◽  
2014 ◽  
Vol 4 (69) ◽  
pp. 36544-36552 ◽  
Author(s):  
Uri Stoin ◽  
Zach Barnea ◽  
Yoel Sasson
Keyword(s):  
Carbon Dioxide ◽  
Superoxide Anion ◽  
Anion Radical ◽  
New Technology ◽  
Superoxide Anion Radical ◽  
Nucleophilic Attack ◽  
Superoxide Anions

A novel chemistry for the efficient abatement of carbon dioxideviaswift nucleophilic attack by superoxide anions is disclosed.

In situ Generation of Superoxide Anion Radical in Aqueous Medium under Ambient Conditions

ChemPhysChem ◽  
2013 ◽  
Vol 14 (18) ◽  
pp. 4158-4164 ◽  
Author(s):  
Uri Stoin ◽  
Alexander I. Shames ◽  
Itamar Malka ◽  
Ilana Bar ◽  
Yoel Sasson
Keyword(s):  
Aqueous Medium ◽  
Superoxide Anion ◽  
Anion Radical ◽  
Superoxide Anion Radical ◽  
Ambient Conditions ◽  
In Situ Generation

scholarly journals ROS Accumulation and TTC Reduction in Growing Embryo of Crithmum maritimum L. Isolated from Water or Salt Imbibed Seeds

2011 ◽  
Vol 3 (2) ◽  
pp. 98-103 ◽  
Author(s):  
Abdallah ATIA ◽  
Chedly ABDELLY ◽  
Abderrazak SMAOUI
Keyword(s):  
Superoxide Anion ◽  
Anion Radical ◽  
Respiratory Activity ◽  
Superoxide Anion Radical ◽  
Distilled Water ◽  
Tetrazolium Chloride ◽  
Ros Accumulation ◽  
Radicle Emergence ◽  
O2 Production

The salinity induced inhibition of seeds germination remains not clear at physiological levels. The aims of this study is to investigate the effect of salt on germination, embryo growth, superoxide anion radical (O2·-) and the respiratory activity (TTC reduction) in Crithmum maritimum L. seeds. Thus the embryo growth, in situ localization of respiratory activity and superoxide anion radical (O2·-) localization, were investigated. Chlorure 2, 3, 5-triphényltétrazolium (TTC) reduction test and superoxide anion radical (O2·-) localization with Nitroblue Tetrazolium Chloride (NBT) were performed in embryo isolated from seeds of the halophyte Crithmum maritimum L either sown in distilled water or in 200 mM NaCl. The key results show that germination was maximal (90 %) in distilled water, but was fully inhibited following seed exposure to NaCl. The completion of the embryo growth (ca. 2 mm length) leading to the radicle emergence took 6 d in H2O, but was markedly delayed by salt. NaCl reduced the elongation zone in the embryo axis, hence indicating that the cell division and/or cell elongation were disturbed by salinity. The respiratory activity (TTC reduction) and O2·- production in the cotyledon were significantly lowered by salinity.

scholarly journals Synthesis, Spectroscopic Investigation and Catalytic Behaviour of Histidine Substituted Nickel(II) Phthalocyanine

2021 ◽  
Vol 33 (10) ◽  
pp. 2455-2464
Author(s):  
K.R. Venugopala Reddy ◽  
T.M. Sharanakumar ◽  
Mounesh ◽  
N.Y. Praveenkumar ◽  
Suresh ◽  
...  
Keyword(s):  
Phenolic Compounds ◽  
Molecular Oxygen ◽  
Spectroscopic Investigation ◽  
Superoxide Anion ◽  
Anion Radical ◽  
Oxidation Behaviour ◽  
Superoxide Anion Radical ◽  
Vis Spectroscopy ◽  
Catalytic Behaviour ◽  
Oxidation Of Phenol

In this work, the oxidation behaviour of phenol and chlorophenol contaminants present in the water catalyzed by histidine substituted nickel(II) phthalocyanine (NiPc) is reported. This work comprises synthesis, characterization and study the catalytic behaviour of histidine substituted NiPc on the oxidation of phenol and their substrates like 2- and 4-chlorophenols with 4-aminoantipyrine utilizing molecular oxygen. The products from the oxidation can be analyzed by UV-Vis spectroscopy and the results confirmed the formation of superoxide anion radical were crucial for the formation of product and a feasible mechanism including a successive transfer of single electron from phenolic compounds to O2 through the axis of histidine Ni(II)Pc was reported.

Sign in / Sign up

Export Citation Format

Share Document