Synthesis of silica hybrid nanoparticles modified with photofunctional polymers and construction of colloidal crystals

Ishizu, Koji; Tokuno, Yoko; Lee, Dong Hoon; Uchida, Satoshi; Ozawa, Masaaki

doi:10.1002/app.29815

Cited by 4 publications

(1 citation statement)

References 22 publications

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“…Thereisa limited number of publications [31,32] concerning a simultaneous controlled synthesis and functionalization of SiO 2 NPs in situ. Synthesis of hybrid polymer/inorganic particles via water dispersion multi-stage polymerization was described [33].…”

Section: Introductionmentioning

confidence: 99%

Luminescent SiO2 nanoparticles for cell labelling: Combined water dispersion polymerization and 3D condensation controlled by oligoperoxide surfactant-initiator

Cropper

Mitina

Klyuchivska

et al. 2018

European Polymer Journal

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Hybrid polymer coated silica nanoparticles (NPs) were synthesized using low temperature graft (co)polymerization of trimethoxysilane propyl methacrylate (MPTS) initiated by surface-active oligoperoxide metal complex (OMC) in aqueous media. These NPs were characterized by means of kinetic, solid-state NMR, TEM and FTIR techniques. Two processes, namely the radical graftcopolymerization due to presence of double bonds and 3D polycondensation provided by the intra-or/and intermolecular interaction of organosilicic fragments, occurred simultaneously. The relative contribution of the reactions depending on initiator concentration and pH value leading to the formation of low cured polydisperse microparticles or OMC coated SiO 2 NPs of controlled curing degree was studied. The availability of free-radical forming peroxide fragments on the surface of SiO 2 NPs provides an opportunity for seeded polymerization leading to the formation of the functional polymer coated NPs with controlled particle structure, size, and functionality. Encapsulation of the luminescent dye (Rhodamine 6G) in SiO 2 core of functionalized NPs provided a noticeable increase in their resistance to photobleaching and improved biocompatibility. These luminescent NPs were not only attached to murine leukemia L1210 cells but also tolerated by the mammalian cells. Their potential use for labeling of the mammalian cells is considered.

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Section: Introductionmentioning

confidence: 99%

Luminescent SiO2 nanoparticles for cell labelling: Combined water dispersion polymerization and 3D condensation controlled by oligoperoxide surfactant-initiator

Cropper

Mitina

Klyuchivska

et al. 2018

European Polymer Journal

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Architecture of colloidal crystals constructed by silica hybrid nanoparticles

Ishizu

Tokuno

Lee

et al. 2010

J of Applied Polymer Sci

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Silica (SiO 2 )-crosslinked polystyrene (PS) particles possessing photofunctional N,N-diethyldithiocarbamate (DC) groups on their surface were prepared by the free-radical emulsion copolymerization of a mixture of SiO 2 (diameter D n ¼ 192 nm), styrene, divinyl benzene, 4-vinylbenzyl N,N-diethyldithiocarbamate (VBDC), and 2-hydroxyethyl methacrylate with a radical initiator under UV irradiation. In this copolymerization, the inimer VBDC had the formation of a hyperbranched structure by a living radical mechanism. These particles had DC groups on their surface. Subsequently, poly(methyl methacrylate) brushes encapsulated SiO 2 particles were synthesized by the grafting from a photoinduced atom transfer radical polymerization (ATRP) approach of methyl methacrylate initiated by SiO 2 -crosslinked PS particles as a macroinitiator. We constructed the colloidal crystals using these photofunctional particles. Moreover, the SiO 2 particle array of colloidal crystals was locked by radical photopolymerization with vinyl monomer as a matrix.

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Surface Tailoring of Polymer Nanoparticles with Living Polymerization Methods

Ishizu¹,

Dong²

2010

Advanced Polymer Nanoparticles

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Synthesis of silica hybrid nanoparticles modified with photofunctional polymers and construction of colloidal crystals

Cited by 4 publications

References 22 publications

Luminescent SiO2 nanoparticles for cell labelling: Combined water dispersion polymerization and 3D condensation controlled by oligoperoxide surfactant-initiator

Luminescent SiO2 nanoparticles for cell labelling: Combined water dispersion polymerization and 3D condensation controlled by oligoperoxide surfactant-initiator

Architecture of colloidal crystals constructed by silica hybrid nanoparticles

Surface Tailoring of Polymer Nanoparticles with Living Polymerization Methods

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