Radical polymerization of methacrylates having acetylenic moiety activated by electron-withdrawing group as a reactive functional group

2006 ◽  
Vol 66 (2) ◽  
pp. 229-238 ◽  
Author(s):  
Hirofumi Kuroda ◽  
Sayaka Nakatsuchi ◽  
Nobuyoshi Kitao ◽  
Tsuyoshi Nakagawa
Keyword(s):  
Radical Polymerization ◽  
Functional Group ◽  
Reactive Functional Group ◽  
Electron Withdrawing Group

Functionalization of porphyrins: towards the synthesis of bifunctional chelates for bismuth coordination

2010 ◽  
Vol 14 (05) ◽  
pp. 412-420 ◽  
Author(s):  
Zakaria Halime ◽  
Sébatien Balieu ◽  
Btissam Najjari ◽  
Mohammed Lachkar ◽  
Thierry Roisnel ◽  
...  
Keyword(s):  
Acetic Acid ◽  
Ethyl Ester ◽  
Functional Group ◽  
Acid Ethyl Ester ◽  
Phenyl Group ◽  
Ester Group ◽  
Reactive Functional Group ◽  
Amine Function ◽  
Electron Withdrawing Group ◽  
Bifunctional Chelates

We report the condensation of 3-chloromethyl-benzoyl chloride with two atropisomers ααββ and αβαβ of meso-5,10,15,20-tetrakis-(2-amino)phenylporphyrin (TAPP), followed by the reaction of the anion of either cyano-acetic acid ethyl ester or (4-nitro-phenyl)-acetic acid ethyl ester to prepare various pre-organized strapped porphyrins. These two reagents were selected as both allow the easy formation of the anion in the α position of the ester group while their electron-withdrawing group (EWG) can be further transformed in a reactive functional group. In the ααββ series, this reaction leads to three isomeric porphyrins differing only by the location of their ethoxycarbonyl groups, oriented either towards the center of the porphyrin or maintained outside of the cavity. In the αβαβ series, as expected, a single porphyrin is obtained in which both straps bear an ethoxycarbonyl group, precursor of a hanging carboxylic function and a cyano or a 4-nitro-phenyl group, which can be reduced to an amine function, suitable for the coupling on a biomolecule.

Computational electrochemistry study of derivatives of anthraquinone and phenanthraquinone analogues: the substitution effect

RSC Advances ◽  
2016 ◽  
Vol 6 (92) ◽  
pp. 89827-89835 ◽  
Author(s):  
Zhen Wang ◽  
Anyang Li ◽  
Lei Gou ◽  
Jingzheng Ren ◽  
Gaohong Zhai
Keyword(s):  
Redox Potential ◽  
Functional Group ◽  
Substitution Effect ◽  
Single Electron ◽  
Group Position ◽  
Computational Electrochemistry ◽  
Electron Withdrawing Group ◽  
Derivatives Of

Effects of functional group position on the calculated redox potential for the single electron-withdrawing group substitution of phenanthraquinone analogues.

Construction of Nonbiofouling Biofunctional Glass Surface by Self-Assembled Monolayer and Graft Hydrophilic Polymer

2008 ◽  
Vol 47-50 ◽  
pp. 1343-1346 ◽  
Author(s):  
Zong Bin Liu ◽  
Bei Zhang ◽  
Brian Yu Fung Pow ◽  
Mo Yang ◽  
Arthur Fuk Tak Mak
Keyword(s):  
Graft Polymerization ◽  
Functional Group ◽  
Substrate Surface ◽  
Surface Modifications ◽  
Activation Process ◽  
Self Assembled Monolayer ◽  
Functional Part ◽  
Reactive Functional Group ◽  
Self Assembled ◽  
Glass Surfaces

This paper introduces a new method of surface modification by self-assembled monolayer (SAM) and polymer monolayer grafting. Since most of the glass surfaces lack the reactive functional group, an activation process with 3-(trimethoxysilyl)propyl methacrylate(TPM) is used in our experiment to generate the vinyl reactive sites on the substrate surface for further graft polymerization. The TPM saline layer acts as the “anchor” part to link the functional part onto the surface of substrate. The paper summarizes the surface modifications by the polymerizations of PEGMA, AA(Acrylic acid) and NVP(Nitrogen-vinyl-2-pyrrolidone) respectively and their applications for protein adsorption and cell adhesion through a series of measurements. In previous research, AA and NVP had also been adopted for surface treatment and had achieved good results. The substrate can be glass, alumina, silicon, metals or stainless steel. We choose glass as our substrate during the experiment.

scholarly journals Direct subphthalocyanine conjugation to bombesin vs. indirect conjugation to its lipidic nanocarrier

2016 ◽  
Vol 14 (19) ◽  
pp. 4511-4518 ◽  
Author(s):  
Yann Bernhard ◽  
Elodie Gigot ◽  
Victor Goncalves ◽  
Mathieu Moreau ◽  
Nicolas Sok ◽  
...  
Keyword(s):  
Contrast Agents ◽  
Functional Group ◽  
Reactive Functional Group ◽  
Second Chance

Azido-liposomes give fluorophores/contrast agents with no reactive functional group available on their backbone a second chance to be (indirectly) bioconjugated (with bombesin).

Self-Assembly of Functionalized [2]Catenanes Bearing a Reactive Functional Group on either One or Both Macrocyclic ComponentsFrom Monomeric [2]Catenanes to Polycatenanes†

1998 ◽  
Vol 31 (2) ◽  
pp. 295-307 ◽  
Author(s):  
Stephan Menzer ◽  
Andrew J. P. White ◽  
David J. Williams ◽  
Martin Bělohradský ◽  
Christoph Hamers ◽  
...  
Keyword(s):  
Self Assembly ◽  
Functional Group ◽  
Reactive Functional Group

scholarly journals NMR and EPR Study of Homolysis of Diastereomeric Alkoxyamines

Molecules ◽  
2020 ◽  
Vol 25 (21) ◽  
pp. 5080
Author(s):  
Sergey Cherkasov ◽  
Dmitriy Parkhomenko ◽  
Alexander Genaev ◽  
Georgii Salnikov ◽  
Mariya Edeleva ◽  
...  
Keyword(s):  
Electron Paramagnetic Resonance ◽  
Detailed Analysis ◽  
Radical Polymerization ◽  
Rate Constant ◽  
Functional Group ◽  
Accurate Estimate ◽  
Controlled Radical Polymerization ◽  
Paramagnetic Resonance ◽  
Biexponential Kinetics ◽  
Electron Paramagnetic

Three alkoxyamines based on imidazoline radicals with a pyridine functional group—potential initiators of nitroxide-mediated, controlled radical polymerization—were synthesized. Electron Paramagnetic Resonance (EPR) measurements reveal biexponential kinetics for the thermolysis for diastereomeric alkoxyamines and monoexponential kinetics for an achiral alkoxyamine. For comparison, the thermolysis of all three alkoxyamines was studied by NMR in the presence of three different scavengers, namely tetramethylpiperidine-N-oxyl (TEMPO), thiophenol (PhSH), and β-mercaptoethanol (BME), and detailed analysis of products was performed. NMR differentiates between N-inversion, epimerization, and homolysis reactions. The choice of scavenger is crucial for making a reliable and accurate estimate of the true homolysis rate constant.

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