scholarly journals Hydrogels by supramolecular crosslinking of terpyridine end group functionalized 8-arm poly(ethylene glycol)

Soft Matter ◽  
2014 ◽  
Vol 10 (37) ◽  
pp. 7328-7336 ◽  
Author(s):  
Rong Wang ◽  
Mike Geven ◽  
Pieter J. Dijkstra ◽  
Penny Martens ◽  
Marcel Karperien
Keyword(s):  
Transition Metal ◽  
Ethylene Glycol ◽  
Metal Ions ◽  
Transition Metal Ions ◽  
Nano Particles ◽  
Poly Ethylene Glycol ◽  
Poly Ethylene ◽  
End Group

Complexion of transition metal ions with a terpyridyl end-group 8-arm poly(ethylene glycol) afforded either nano-particles or hydrogels at different concentrations.

scholarly journals End group functionalization of poly(ethylene glycol) with phenolphthalein: towards star-shaped polymers based on supramolecular interactions

2014 ◽  
Vol 10 ◽  
pp. 2263-2269 ◽  
Author(s):  
Carolin Fleischmann ◽  
Hendrik Wöhlk ◽  
Helmut Ritter
Keyword(s):  
Ethylene Glycol ◽  
Cycloaddition Reaction ◽  
Supramolecular Interactions ◽  
Poly Ethylene Glycol ◽  
Naked Eye ◽  
Vis Spectroscopy ◽  
End Group Functionalization ◽  
Interesting Approach ◽  
Poly Ethylene ◽  
End Group

The synthesis of a new phenolphthalein azide derivative, which can be easily utilized in polymer analogous reactions, is presented. The subsequent cycloaddition reaction with propargyl-functionalized methoxypoly(ethylene glycol) yielded polymers bearing phenolphthalein as the covalently attached end group. In presence of per-β-cyclodextrin-dipentaerythritol, the formation of stable inclusion complexes was observed, representing an interesting approach towards the formation of star shaped polymers. The decolorization of a basic polymer solution caused by the complexation was of great advantage since this behavior enabled following the complex formation by UV–vis spectroscopy and even the naked eye.

scholarly journals Sizing and Thermal Stability of Prepared Tetraaminophthalocyaninatocopper(II) Derivatives-grafted Polymers

2016 ◽  
Vol 13 (2) ◽  
pp. 221-234
Author(s):  
Baghdad Science Journal
Keyword(s):  
Thermal Stability ◽  
Ethylene Glycol ◽  
Group Analysis ◽  
Condensation Polymerization ◽  
Grafted Polymers ◽  
Poly Ethylene Glycol ◽  
Molecular Weights ◽  
Poly Ethylene ◽  
Thermal Stability Of ◽  
End Group

Different polymers were prepared by condensation polymerization of sebacic anhydride and adipic anhydride with ethylene glycol and poly(ethylene glycol). Their number average molecular weights were determined by end group analysis. Then, they were grafted on the prepared phthalocyaninatocopper(II) compounds with the general formula (NH2)4PcCu(II) having amino groups of 3,3',3'',3'''- or 4,4',4'',4'''- positions. All prepared polymers, compounds, and phthalocyaninatocopper(II)-grafted polymers were characterized by FTIR. The sizing measurements were carried out in 3,3',3'',3'''- (NH2)4PcCu(II) and 4,4',4'',4'''- (NH2)4PcCu(II) compounds with and without grafting polymers. The results showed that the grafting process led to decreasing in particle size and increasing in surface area. The grafting process was reflected positively on the thermal degradation of 3,3',3'',3'''- (NH2)4PcCu(II) and 4,4',4'',4'''- (NH2)4PcCu(II) grafted polymers. They had higher thermal stability accompanied with higher char residue and T50% weight loss with 3,3',3'',3'''-(NH2)4PcCu(II) and their grafted polymers being the best.

Nitric oxide-releasing polymeric furoxan conjugates

2015 ◽  
Vol 6 (44) ◽  
pp. 7737-7748 ◽  
Author(s):  
Tengjiao Wang ◽  
André J. van der Vlies ◽  
Hiroshi Uyama ◽  
Urara Hasegawa
Keyword(s):  
Nitric Oxide ◽  
Ethylene Glycol ◽  
Poly Ethylene Glycol ◽  
No Donors ◽  
Poly Ethylene ◽  
Nitric Oxide Releasing ◽  
End Group

Polymeric nitric oxide (NO) donors were prepared by the conjugation of the azide-containing furoxans and poly(ethylene glycol) having an alkyne end groupviathe copper-catalyzed Huisgen cycloaddition.

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