نتایج جستجو برای: aget atrp

تعداد نتایج: 677  

2012
Wei Li Yaohui Xu Yang Zhou Wenhui Ma Shixing Wang Yongnian Dai

Silica nanoparticles have been functionalized by click chemistry and atom transfer radical polymerization (ATRP) simultaneously. First, the silanized silica nanoparticles were modified with bromine end group, and then the azide group was grafted onto the surface via covalent coupling. 3-Bromopropyl propiolate was synthesized, and then the synthesized materials were used to react with azide-modi...

Journal: :ACS applied materials & interfaces 2014
Xiaolong Wang Qiuquan Guo Xiaobing Cai Shaolin Zhou Brad Kobe Jun Yang

Three-dimensional printing was used to fabricate various metallic structures by directly integrating a Br-containing vinyl-terminated initiator into the 3D resin followed by surface-initiated atomic-transfer radical polymerization (ATRP) and subsequent electroless plating. Cu- and Ni-coated complex structures, such as microlattices, hollow balls, and even Eiffel towers, were prepared. Moreover,...

2007
P. Ritz P. Látalová M. Janata L. Toman J. Genzer P. Vlček

Bifunctional polystyrene macroinitiators, having various molecular weights, were prepared by atom transfer radical polymerization (ATRP), initiated with bifunctional initiator 1,3-bis{1-methyl-1[(2,2,2-trichloroethoxy) carbonylamino]ethyl}benzene in conjunction with CuCl catalyst and polyamine ligands. These macroinitiators were subsequently used for ATRP of tert-butyl acrylate (t-BuA), giving ...

Journal: :Polymer Chemistry 2023

In the vast majority of atom transfer radical polymerizations, alkyl bromides or chlorides are commonly employed as initiators. Herein, iodides demonstrated ATRP

2015
Li Qun Xu Ning Ning Li Bin Zhang Jiu Cun Chen Nicolay Tsarevsky

The preparation of PEGylated fluorescent nanoparticles (NPs) based on atom transfer radical polymerization (ATRP) and “click chemistry” in one-pot synthesis is presented. First, poly(p-chloromethyl styrene-alt-N-propargylmaleimide) (P(CMS-alt-NPM)) copolymer was prepared via reversible addition-fragmentation chain transfer (RAFT) polymerization. Subsequently, the azido-containing fluorene-based...

2007
Leena Nurmi Susanna Holappa Hannu Mikkonen Jukka Seppälä

Graft copolymers of acetylated starch oligomer (AS) and poly(methyl methacrylate) (PMMA) were polymerized by atom transfer radical polymerization (ATRP). AS was converted to an ATRP macroinitiator by converting a part of the hydroxyl groups of AS to 2-bromoisobutyryl groups. Macroinitiators with varying degrees of substitution for the 2-bromoisobutyryl group were prepared. The polymerizations w...

Journal: :Chemical Society reviews 2014
Fanny Joubert Osama M Musa David R W Hodgson Neil R Cameron

In this comprehensive review, we report on the preparation of graft-copolymers of cellulose and cellulose derivatives using atom transfer radical polymerization (ATRP) under homogeneous conditions. The review is divided into four sections according to the cellulosic material that is graft-copolymerised; (i) cellulose, (ii) ethyl cellulose, (iii) hydroxypropyl cellulose and (iv) other cellulose ...

Journal: :Polymer Chemistry 2023

An in-depth characterization of PDMAEMA prepared by ATRP was conducted, with a focus on end group analysis. This work discusses analytical tools providing essential information about the extent control over DMAEMA polymerization and chain extension.

2002
Ricardo O.R. Costa Wander L. Vasconcelos Richard M. Laine

We have developed a method to obtain polymer hybrids with control of inorganic content and molecular configuration. Hybrid poly(methyl methacrylate) (PMMA) was obtained via atom transfer radical polymerization (ATRP) initiated by octafunctional cubic silsesquioxanes using CuCl as catalyst. Two different ATRP initiators obtained by attaching specific chemical groups to the cubic silsesquioxane w...

2006
Hariharasudhan Chirra James Z. Hilt

Biocompatible polymer networks with specific structure and orientation have tremendous potential in the biomedical field (e.g., recognition of specific proteins and other biomolecules for diagnostic and therapeutic applications). The control over the growth of these polymer networks on surfaces plays a vital role, since it acts as the interface between the device and the biological medium/envir...

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