نتایج جستجو برای: arget atrp

تعداد نتایج: 692  

Journal: :Chemical communications 2007
Brian J Jordan Graeme Cooke James F Garety Michael A Pollier Nadiya Kryvokhyzha Ali Bayir Gouher Rabani Vincent M Rotello

We report the synthesis of a water-soluble flavin polymer using ATRP, whereby the oligoethylene glycol backbone provides both a local hydrophobic environment and redox tuning of the flavin moiety typical of flavoenzyme prototypes.

2014
Mukesh Kumar Jin Suk Chung Seung Hyun Hur

We report on the grafting of poly(methyl methacrylate) (PMMA) onto the surface of high-density functionalized graphene oxides (GO) through controlled radical polymerization (CRP). To increase the density of surface grafting, GO was first diazotized (DGO), followed by esterification with 2-bromoisobutyryl bromide, which resulted in an atom transfer radical polymerization (ATRP) initiator-functio...

2009
V. Mittal N. B. Matsko

Designer particles synthesized by surfactant-free emulsion polymerization were adsorbed successfully on the sapphire discs. The particles carried a thin layer of an atom transfer radical polymerization (ATRP) initiator on the surface and were subsequently successfully used to graft PNIPAAM brushes from the surface. The surface coverage of the discs by these particles could be improved by heat t...

2014
Milica Spasojević Joop Vorenkamp Mark R. P. A. C. S. Jansen Paul de Vos Arend Jan Schouten

The synthesis of poly(N-isopropylacrylamide)-b-poly(L-lysine) and poly(N- isopropylacrylamide-co-acrylamide)-b-poly(L-lysine) copolymers was accomplished by combining atom transfer radical polymerization (ATRP) and ring opening polymerization (ROP). For this purpose, a di-functional initiator with protected amino group was successfully synthetized. The ATRP of N-isopropylacrylamide yielded narr...

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...

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