نتایج جستجو برای: aget atrp

تعداد نتایج: 677  

2015
Marcello Iacono Andreas Heise Walter Remo Caseri

The synthesis of polymer brush decorated silica nano-particles is demonstrated by activator regeneration by electron transfer atom transfer radical polymerization (ARGET ATRP) grafting of poly(tert-butyl methacrylate). ATRP initiator decorated silica nano-particles were obtained using a novel trimethylsiloxane derivatised ATRP initiator obtained by click chemistry. Comparison of de-grafted poly...

Journal: :Langmuir : the ACS journal of surfaces and colloids 2005
Amit Y Sankhe Brandon D Booth Nathan J Wiker S Michael Kilbey

Combining inkjet printing and atom-transfer radical polymerization (ATRP) provides a straightforward and versatile method for producing patterned polymer surfaces that may serve as platforms for a variety of applications. We report the use of drop-on-demand technology to print binary chemical gradients and simple patterns onto solid substrates and, by using surface-confined ATRP, amplify these ...

2018
Youning Chen Wei Zhao Huan Wang Yuhong Li Chenxi Li

This paper explored the method of combining atom transfer radical polymerization (ATRP) technology and hyperbranched polymer principle to prepare the high capacity chelating resin. First, surface-initiated atom transfer radical polymerization (SI-ATRP) method was used to graft glycidyl methacrylate (GMA) on chloromethylated cross-linked styrene-divinylbenzene resin, and then the novel polyamine...

Journal: :Angewandte Chemie 2021

Copolymere sind die Antwort auf limitierten Eigenschaften von Homopolymeren. Um gesamte Vielfalt der verfügbaren Monomere nutzen zu können, werden derzeit Katalysatoren untersucht, in mehr als einem Polymerisationsmechanismus aktiv sind. Eisen-Guanidin-Katalysatoren haben sich bei ROP Lactid außerordentlich erwiesen und zeigen jetzt ihre Vielseitigkeit, indem sie auch ATRP Styrol katalysieren. ...

Journal: :Journal of polymer science 2021

Atom transfer radical polymerization (ATRP) is one of the most popular advanced techniques in macromolecular science, allowing synthesis tailor-made polymers with controlled molecular weight, architecture, composition, and functionality. The combination ATRP ring-opening (ROP) provides a straightforward route for preparation exhibiting both targeted well-defined features biodegradability, which...

Journal: :Langmuir : the ACS journal of surfaces and colloids 2010
Jian Li Adam P Hitchcock Harald D H Stöver

This Article describes a new microencapsulation method based on a Pickering emulsion templated interfacial atom transfer radical polymerization (PETI-ATRP). Cationic LUDOX CL nanoparticles were coated electrostatically with an anionic polymeric ATRP initiator, poly(sodium styrene sulfonate-co-2-(2-bromoisobutyryloxy)ethyl methacrylate) (PSB), prepared by radical copolymerization of sodium styre...

Journal: :Cancer prevention research 2009
Sudhir Nair Vikram D Kekatpure Benjamin L Judson Arleen B Rifkind Richard D Granstein Jay O Boyle Kotha Subbaramaiah Joseph B Guttenplan Andrew J Dannenberg

UV radiation (UVR) and exposure to tobacco smoke, a source of polycyclic aromatic hydrocarbons (PAH), have been linked to skin carcinogenesis. UVR-mediated activation of the aryl hydrocarbon receptor (AhR) stimulates the transcription of CYP1A1 and CYP1B1, which encode proteins that convert PAH to genotoxic metabolites. We determined whether UVR exposure sensitized human keratinocytes to PAH-in...

2016
Binbin Xu Wenqiang Yao Yongjun Li Sen Zhang Xiaoyu Huang

A series of fluorine-containing amphiphilic ABC triblock copolymers comprising hydrophilic poly(ethylene glycol) (PEG) and poly(methacrylic acid) (PMAA), and hydrophobic poly(p-(2-(4-biphenyl)perfluorocyclobutoxy)phenyl methacrylate) (PBPFCBPMA) segments were synthesized by successive atom transfer radical polymerization (ATRP). First, PEG-Br macroinitiators bearing one terminal ATRP initiating...

2015
Tzung-Yung Tsai Chih-Feng Huang

We previously studied a suitably 2,2,6,6-tetramethylpiperidine-1-oxyl (TEMPO)-oxidized cellulose nanofibrils (TOCNs) that can be further functionalized with initiating sites and overcame the obstacle of performing atom transfer radical polymerization (ATRP) in the presence of neutral carboxylic acid sodium salt groups [1]. Herein, characterization of the modified TOCNs and of the products from ...

2004
Marco Lattuada T. Alan Hatton

We present a systematic methodology to functionalize magnetic nanoparticles through surface-initiated atom-transfer radical polymerization (ATRP). The magnetite nanoparticles are prepared according to the method proposed by Sun et al. (2004), which leads to a monodisperse population of ~ 6 nm particles stabilized by oleic acid. The functionalization of the nanoparticles has been performed by tr...

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