Synthesis and characterization of end-functional polymers on silica nanoparticles via a combination of atom transfer radical polymerization and click chemistry

Ruan, Roger; Chen, Jiucun; Xiang, Jiming; Li, Hongjun; Shen, Yongqian; Gao, Xiang‐Hu; Liang, Yan

doi:10.1016/j.reactfunctpolym.2009.03.005

Cited by 54 publications

(11 citation statements)

References 40 publications

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“…Ranjan and Brittain [ 31 ] successfully grafted polymer chains onto SNPs through a combination of RAFT polymerization and click chemistry. Wang and co-workers [ 32 ] utilized ATRP and click chemistry to modify particles. Polystyrene brushes were firstly introduced on the surface via ATRP, and then the click reaction was generated on the surface of polymerized SNPs.…”

Section: Introductionmentioning

confidence: 99%

Silica nanoparticles functionalized via click chemistry and ATRP for enrichment of Pb(II) ion

Zhou

et al. 2012

Nanoscale Res Lett

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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-modified silica nanoparticles via copper-mediated click chemistry and bromine surface-initiated ATRP. Transmission electron microscopy, Fourier transform infrared spectroscopy, X-ray photoelectron spectroscopy, and thermogravimetric analysis were performed to characterize the functionalized silica nanoparticles. We investigated the enrichment efficiency of bare silica and poly(ethylene glycol) methacrylate (PEGMA)-functionalized silica nanoparticles in Pb(II) aqueous solution. The results demonstrated that PEGMA-functionalized silica nanoparticles can enrich Pb(II) more quickly than pristine silica nanoparticles within 1 h.

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Section: Introductionmentioning

confidence: 99%

Silica nanoparticles functionalized via click chemistry and ATRP for enrichment of Pb(II) ion

Zhou

et al. 2012

Nanoscale Res Lett

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“…The as‐obtained NH 2 ‐functionalized SiO 2 microspheres were redispersed in toluene and then washed several times with dichloromethane and acetone. The NH 2 ‐modified SiO 2 microspheres were kept at 50 0 C in a vacuum oven for one day ,.…”

Section: Methodsmentioning

confidence: 99%

Facile Synthesis of Poly (N‐isopropylacrylamide) Coated SiO₂ Core‐shell Microspheres via Surface‐initiated Atom Transfer Radical Polymerization for H₂O₂ Biosensor Applications

2017

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In this study, inorganic/organic composites containing poly (N‐isopropylacrylamide) coated core‐shell SiO2 microspheres were prepared via surface‐initiated atom transfer radical polymerization (ATRP). The thermal responsive polymer, N‐isopropylacrylamide was treated with methanol, water and CuBr/CuBr2/1,1,4,7,7‐pentamethyldiethylenetriamine (PMDETA) at room temperature to form PNIPAM@SiO2 microspheres. The as‐prepared PNIPAM@SiO2 microspheres were characterized by FT‐IR, TGA, XPS, SEM, TEM analyses. Hemoglobin (Hb) was immobilized onto the surfaces of PNIPAM@SiO2 microspheres via hydrophobic and π‐π stacking interactions. The as‐prepared Hb/PNIPAM@SiO2 electrode exhibits well‐defined redox peak at a formal potential of −0.38 V, validating the direct electrochemistry of Hb. The Hb immobilized composite film retained its bioelectroactivity without any significant loss of catalytic activity. The modified electrode detects H2O2 over a wide linear concentration range (0.1 μM to 333 μM) with a detection limit of 0.07 μM. This modified electrode also successfully detects H2O2 from food and disinfectant samples with appreciable recovery values, validating its practicality. We believe that PNIPAM@SiO2 composite has great potential to be used in the detection of H2O2 and development of other enzyme based biosensors.

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Section: Introductionmentioning

confidence: 99%

“…The following click reaction such as copper(I)-catalyzed alkyne-azide cycloaddition (CuAAC), gives highly exfoliated polymer/clay nanocomposites, as it can be carried out with high efficiency under ambient conditions [28,29]. The CuAAC click reaction has also been applied for the preparation of different types of polymer nanocomposites using silica [30][31][32] and POSS [33][34][35][36][37] nanoparticles, carbon nanotube [38,39], and graphene [40,41].A new concept that is based on simultaneous click reactions of two different alkyne-functionalized molecules in conjunction with an azide-functionalized molecules in a single step has been very recently reported [42][43][44]. Moreover, orthogonal combinations of two (or more) mutually exclusive click reactions allow the fabrication of complex macromolecular architectures as well as multifunctionalization of materials [45][46][47][48][49][50][51][52][53][54][55][56][57][58][59][60].…”

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confidence: 99%

In situ preparation of hetero-polymers/clay nanocomposites by CUAAC click chemistry

Taşdelen

Altınkök

2021

Turk J Chem

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A series of polymer/clay nanocomposites containing mechanistically two different polymers, poly(ethylene glycol) (PEG) and poly(epsilon caprolactone) (PCL), were prepared by simultaneous copper(I)-catalyzed alkyne-azide cycloaddition click reactions. Both clickable polymers, PEG-Alkyne and PCL-Alkyne, were simultaneously clicked on to azide-functional montmorillonite (MMT-N 3 ) nanoclay to get corresponding PEG-PCL/MMT nanocomposites. The chemical structures of the resulting nanocomposites were verified by following azide and silicone-oxygen bands using FT-IR and characteristic bands of PEG and PCL segments using 1 H-NMR spectroscopy. The combined XRD and TEM analysis confirmed that all PEG-PCL/MMT nanocomposites had partially exfoliated/intercalated morphologies. In addition, the increase of MMT-N 3 loading not only improved the onset and maximum degradation temperatures of the nanocomposites but also their char yields. Furthermore, the incorporation of MMT-N 3 in the polymer matrix did not significantly influence the crystallization behavior of both PEG and PCL segments.

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Synthesis and characterization of end-functional polymers on silica nanoparticles via a combination of atom transfer radical polymerization and click chemistry

Cited by 54 publications

References 40 publications

Silica nanoparticles functionalized via click chemistry and ATRP for enrichment of Pb(II) ion

Silica nanoparticles functionalized via click chemistry and ATRP for enrichment of Pb(II) ion

Facile Synthesis of Poly (N‐isopropylacrylamide) Coated SiO₂ Core‐shell Microspheres via Surface‐initiated Atom Transfer Radical Polymerization for H₂O₂ Biosensor Applications

In situ preparation of hetero-polymers/clay nanocomposites by CUAAC click chemistry

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Synthesis and characterization of end-functional polymers on silica nanoparticles via a combination of atom transfer radical polymerization and click chemistry

Cited by 54 publications

References 40 publications

Silica nanoparticles functionalized via click chemistry and ATRP for enrichment of Pb(II) ion

Silica nanoparticles functionalized via click chemistry and ATRP for enrichment of Pb(II) ion

Facile Synthesis of Poly (N‐isopropylacrylamide) Coated SiO2 Core‐shell Microspheres via Surface‐initiated Atom Transfer Radical Polymerization for H2O2 Biosensor Applications

In situ preparation of hetero-polymers/clay nanocomposites by CUAAC click chemistry

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Facile Synthesis of Poly (N‐isopropylacrylamide) Coated SiO₂ Core‐shell Microspheres via Surface‐initiated Atom Transfer Radical Polymerization for H₂O₂ Biosensor Applications