Synthesis of diverse cyclic-brush polymers with cyclic polystyrene as a universal template via a grafting-from approach

2016 ◽  
Vol 7 (11) ◽  
pp. 2112-2120 ◽  
Author(s):  
Shuangshuang Zhang ◽  
Lu Yin ◽  
Wei Zhang ◽  
Zhengbiao Zhang ◽  
Xiulin Zhu
Keyword(s):  
Facile Synthesis ◽  
Grafting From ◽  
Cyclic Polystyrene ◽  
Brush Polymers

With cyclic poly(styrene) as a universal template, facile synthesis of diverse cyclic-brush polymers via a grafting-from approach was illustrated.

Diselenide-Labeled Cyclic Polystyrene with Multiple Responses: Facile Synthesis, Tunable Size, and Topology

2016 ◽  
Vol 37 (10) ◽  
pp. 865-871 ◽  
Author(s):  
Zhaoxiong Cai ◽  
Weihong Lu ◽  
Feng Gao ◽  
Xiangqiang Pan ◽  
Jian Zhu ◽  
...  
Keyword(s):  
Facile Synthesis ◽  
Multiple Responses ◽  
And Topology ◽  
Cyclic Polystyrene

Amphiphilic ethyl cellulose brush polymers with mono and dual side chains: Facile synthesis, self-assembly, and tunable temperature-pH responsivities

Polymer ◽  
2012 ◽  
Vol 53 (4) ◽  
pp. 956-966 ◽  
Author(s):  
Weizhong Yuan ◽  
Jinchun Zhang ◽  
Hui Zou ◽  
Tianxiang Shen ◽  
Jie Ren
Keyword(s):  
Self Assembly ◽  
Ethyl Cellulose ◽  
Side Chains ◽  
Facile Synthesis ◽  
Brush Polymers

Brush Polymers Prepared by Grafting from Living Anionic Polymerization Approach

2017 ◽  
Vol 46 (7) ◽  
pp. 1027-1029 ◽  
Author(s):  
Kaoru Adachi ◽  
Ryota Uemura ◽  
Hideki Nishimura ◽  
Daisuke Kubota ◽  
Yasuhisa Tsukahara
Keyword(s):  
Anionic Polymerization ◽  
Living Anionic Polymerization ◽  
Grafting From ◽  
Brush Polymers

Biotemplated facile synthesis of three‐dimensional micro/nanoporous tin oxide: improving the flammable and mechanical properties of flexible PVC

2019 ◽  
Vol 14 (8) ◽  
pp. 828-830 ◽  
Author(s):  
Weihua Meng ◽  
Weihong Wu ◽  
Weiwei Zhang ◽  
Luyao Cheng ◽  
Yunhong Jiao ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Tin Oxide ◽  
Three Dimensional ◽  
Facile Synthesis

Selective Degradation of Grindelic Acid and Its 3α-Hydroxy Analog: Facile Synthesis of Grindelistrictic Acids and Potential Intermediates for Erigerol

Synlett ◽  
1991 ◽  
Vol 1991 (09) ◽  
pp. 725-727 ◽  
Author(s):  
Takeshi Shimizu ◽  
Sayoko Hiranuma ◽  
Zhao-hui Qian ◽  
Hirosuke Yoshioka
Keyword(s):  
Facile Synthesis ◽  
Selective Degradation

Nanostructured Polymer Brushes With Reversibly Changing Properties

2002 ◽  
Vol 727 ◽  
Author(s):  
Denys Usov ◽  
Manfred Stamm ◽  
Sergiy Minko ◽  
Christian Froeck ◽  
Andreas Scholl ◽  
...  
Keyword(s):  
Polymer Brushes ◽  
Phase Segregation ◽  
Water Contact ◽  
Angle Measurements ◽  
Nanostructured Polymer ◽  
Contact Angle Measurements ◽  
Vertical Segregation ◽  
Oxygen Plasma Etching ◽  
Grafting From ◽  
Photoemission Electron

AbstractWe investigated the interplay between different mechanisms of the lateral and vertical segregation in the synthesized via “grafting from” approach symmetric A/B (where A and B are poly(styrene-co-2,3,4,5,6-pentafluorostyrene) and poly(methylmethacrylate), respectively) polymer brushes upon exposure to different solvents. We used X-ray photoemission electron spectroscopy and microscopy (X-PEEM), AFM, water contact angle measurements, and oxygen plasma etching to study morphology of the brushes. The ripple morphology after toluene (nonselective solvent) revealed elongated lamellar-like domains of A and B polymers alternating across the surface. The dimple-A morphology consisting of round clusters of the polymer A was observed after acetone (selective solvent for B). The top layer was enriched with the polymer B showing that the brush underwent both the lateral and vertical phase segregation. A qualitative agreement with predictions of SCF theory was found.

A FACILE SYNTHESIS AND REACTIONS OF AMINO SELENOLO[2,3-b]PYRIDINE CARBOXYLATE

2015 ◽  
Vol 12 (1) ◽  
pp. 3910-3918 ◽  
Author(s):  
Dr Remon M Zaki ◽  
Prof Adel M. Kamal El-Dean ◽  
Dr Nermin A Marzouk ◽  
Prof Jehan A Micky ◽  
Mrs Rasha H Ahmed
Keyword(s):  
Biological Activity ◽  
Carbonyl Compounds ◽  
Mass Spectra ◽  
The Other ◽  
Pyridine Derivatives ◽  
Facile Synthesis ◽  
High Biological Activity ◽  
Basic Hydrolysis ◽  
Pyridine Carboxylate ◽  
Hydrolysis Of

 Incorporating selenium metal bonded to the pyridine nucleus was achieved by the reaction of selenium metal with 2-chloropyridine carbonitrile 1 in the presence of sodium borohydride as reducing agent. The resulting non isolated selanyl sodium salt was subjected to react with various α-halogenated carbonyl compounds to afford the selenyl pyridine derivatives 3a-f  which compounds 3a-d underwent Thorpe-Ziegler cyclization to give 1-amino-2-substitutedselenolo[2,3-b]pyridine compounds 4a-d, while the other compounds 3e,f failed to be cyclized. Basic hydrolysis of amino selenolo[2,3-b]pyridine carboxylate 4a followed by decarboxylation furnished the corresponding amino selenolopyridine compound 6 which was used as a versatile precursor for synthesis of other heterocyclic compound 7-16. All the newly synthesized compounds were established by elemental and spectral analysis (IR, 1H NMR) in addition to mass spectra for some of them hoping these compounds afforded high biological activity.

S(IV)–Mediated Unsymmetrical Heterocycle Cross-Couplings

2019 ◽  
Author(s):  
Min Zhou ◽  
Jet Tsien ◽  
Tian Qin
Keyword(s):  
Cross Coupling ◽  
Reductive Elimination ◽  
Facile Synthesis ◽  
Trigonal Bipyramidal

<p>Herein we report a sulfur (IV) mediated cross-coupling for facile synthesis of heteroaromatic substrates. Addition of heteroaryl nucleophiles onto a simple, readily-accessible alkyl sulfinyl (IV) chloride allows formation of a trigonal bipyramidal sulfurane intermediate. Reductive elimination therefrom provides bis-heteroaryl products in a practical and efficient fashion. <br></p>

Facile Synthesis of a Diverse Library of Mono-3-substituted β-Cyclodextrin Analogues

2018 ◽  
Author(s):  
Kathryn Kellett ◽  
Brendan M. Duggan ◽  
Michael Gilson
Keyword(s):  
High Yield ◽  
Facile Synthesis ◽  
Wide Range

We have described simple, high-yield, protocols, which require only commonly accessible equipment, to synthesize a wide range of β-CD derivatives mono-substituted at the secondary face. These derivatives may be useful in their own right, and they are also scaffolds for further modification, and examples of the far broader array of derivatives that may be accessed by these procedures.

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