Oxygen Scavenging and Oxygen Barrier Poly(1,2‐butadiene) Films Containing an Iron‐Complex Catalyst

2019 ◽  
Vol 220 (19) ◽  
pp. 1900294 ◽  
Author(s):  
Yu Wang ◽  
Motoharu Shoda ◽  
Ayako Hisama ◽  
Kenichi Oyaizu ◽  
Hiroyuki Nishide
Keyword(s):  
Iron Complex ◽  
Oxygen Barrier ◽  
Complex Catalyst ◽  
Oxygen Scavenging

Allylic hydrocarbon polymers complexed with Fe(II)(salen) as a ultrahigh oxygen-scavenging and active packaging film

2020 ◽  
Vol 92 (6) ◽  
pp. 871-882
Author(s):  
Yu Wang ◽  
Kenichi Oyaizu ◽  
Hiroyuki Nishide
Keyword(s):  
Metal Complexes ◽  
Cost Effective ◽  
High Reactivity ◽  
Iron Complex ◽  
Active Packaging ◽  
Organic Polymers ◽  
Complex Catalyst ◽  
Oxygen Scavenging ◽  
The Matrix ◽  
Hydrocarbon Polymers

AbstractMacromolecular metal complexes provide a molecular-based synergy function of organic polymers and combined metal complexes. A new category of macromolecular complexes includes catalytically active metal complexes immobilized by organic polymers containing reactive substrate moieties in their repeating units. Here, we describe the extremely efficient oxidation of allylic hydrocarbon polymers with the attached iron complex catalyst, as well as the efficient oxygen-consumption or oxygen-scavenging function of the matrix polymer film. The less toxic N,N´-di(salicylaldehyde)ethylenediiminatoiron(II) complex was combined with or fixed onto a series of allylic hydrocarbon polymers as both the oxidative substrate and the film matrix, i.e. poly(1,2-butadiene), polynorbornene, poly(5-vinyl-2-norbornene), poly(2,5-norboenadiene), poly(dicyclopentadiene), and poly(5-ethylidene-2-norbornene). Ultra-high oxygen-scavenging capacity up to 300 mL (oxygen gas at STP)/g(film) was achieved, based on the oxidative consumption of the allylic bond (particularly of poly(5-ethylidene-2-norbornene)), which was more than three times that of the previously reported highest oxygen-scavenging polymers. These oxygen-scavenging films are based on the high reactivity of polymer-metal complexes that provides an innovative development in the area of active packaging polymer films that facilitate cost-effective performance, safety, and sustainability.

scholarly journals The Oligomerization of Butadiene with an Iron Complex Catalyst

1965 ◽  
Vol 38 (8) ◽  
pp. 1243-1247 ◽  
Author(s):  
Masanobu Hidai ◽  
Yasuzo Uchida ◽  
Akira Misono
Keyword(s):  
Iron Complex ◽  
Complex Catalyst

scholarly journals Development of Environmentally Friendly Atom Transfer Radical Polymerization

Polymers ◽  
2020 ◽  
Vol 12 (9) ◽  
pp. 1987
Author(s):  
Ming Yuan ◽  
Xuetao Cui ◽  
Wenxian Zhu ◽  
Huadong Tang
Keyword(s):  
Atom Transfer Radical Polymerization ◽  
Radical Polymerization ◽  
Iron Catalyst ◽  
Iron Complex ◽  
Point Of View ◽  
Research Progress ◽  
Atom Transfer ◽  
Complex Catalyst ◽  
Environmental Friendliness ◽  
Metal Free

Atom transfer radical polymerization (ATRP) is one of the most successful techniques for the preparation of well-defined polymers with controllable molecular weights, narrow molecular weight distributions, specific macromolecular architectures, and precisely designed functionalities. ATRP usually involves transition-metal complex as catalyst. As the most commonly used copper complex catalyst is usually biologically toxic and environmentally unsafe, considerable interest has been focused on iron complex, enzyme, and metal-free catalysts owing to their low toxicity, inexpensive cost, commercial availability and environmental friendliness. This review aims to provide a comprehensive understanding of iron catalyst used in normal, reverse, AGET, ICAR, GAMA, and SARA ATRP, enzyme as well as metal-free catalyst mediated ATRP in the point of view of catalytic activity, initiation efficiency, and polymerization controllability. The principle of ATRP and the development of iron ligand are briefly discussed. The recent development of enzyme-mediated ATRP, the latest research progress on metal-free ATRP, and the application of metal-free ATRP in interdisciplinary areas are highlighted in sections. The prospects and challenges of these three ATRP techniques are also described in the review.

Homogeneous Catalytic Oxidation of Unactivated Primary and Secondary Alcohols Employing a Versatile “Helmet” Phthalocyaninato Iron Complex Catalyst Without Added Organic Solvent

2016 ◽  
Vol 1 (16) ◽  
pp. 5182-5186 ◽  
Author(s):  
Rachel L. Neve ◽  
Matthew C. Eidenschink ◽  
Ilia A. Guzei ◽  
Brian M. Peterson ◽  
Gary M. Vang ◽  
...  
Keyword(s):  
Organic Solvent ◽  
Catalytic Oxidation ◽  
Iron Complex ◽  
Secondary Alcohols ◽  
Complex Catalyst

The Role of the Interaction between Fe(III) and Cell Surface in the Accumulation of 67Ga by Tumor Cells

1991 ◽  
Vol 30 (06) ◽  
pp. 290-293 ◽  
Author(s):  
P. Maleki ◽  
A. Martinezi ◽  
M. C. Crone-Escanye ◽  
J. Robert ◽  
L. J. Anghileri
Keyword(s):  
Cell Surface ◽  
Tumor Cells ◽  
Ionic Composition ◽  
Iron Complex ◽  
Iron Binding ◽  
Complex Time ◽  
Interaction Product ◽  
Thermodynamic Constant ◽  
Number Of Cells

The study of the interaction between complexed iron and tumor cells in the presence of 67Ga-citrate indicates that a phenomenon of iron-binding related to the thermodynamic constant of stability of the iron complex, and a hydrolysis (or anion penetration) of the interaction product determine the uptake of 67Ga. The effects of various parameters such as ionic composition of the medium, nature of the iron complex, time of incubation and number of cells are discussed.

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