Simultaneous templating of polymer nanocapsules and entrapped silver nanoparticles

Shmakov, Sergey N.; Pinkhassik, Eugene

doi:10.1039/c0cc01988g

Cited by 44 publications

(53 citation statements)

References 43 publications

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“…To expand the range of catalytic applications, we prepared Pt NRs by vesicle templated synthesis using acrylate monomers (Figure 2A,B; Figure S5, Supporting Information). The growth of Pt NPs was initiated simultaneously with the formation of the polymer shell of the nanocapsules, similarly to our previous report on the creation of silver nanorattles 8a. Dynamic light scattering data showed no effect of Pt ions on the formation of polymer shells (Figure S6, Supporting Information).…”

Section: Resultssupporting

confidence: 86%

“…Pt NRs were prepared by a method similar to the liposome‐templated method described earlier for silver loaded nanocapsules 8a. In a typical experiment, t BMA (43 μL, 0.193 mmol), BMA (42 μL, 0.199 mmol), EGDMA (32 μL, 0.17 mmol), and DMPA, (1 mg, 3.9×10 −6 mol) were added to a solution of DMPC (0.4 mL, 160 mg, 0.236 mmol) in CHCl 3 .…”

Section: Methodsmentioning

confidence: 99%

“…The shells of these nanocapsules have single nanometer thickness and programmed nanopores. One of the synthesis methods uses vesicle‐templated simultaneous polymerization of nanocapsules and growth of entrapped NPs 8a. The size of entrapped NPs can be controlled by the concentration of metal ion in the aqueous core of the vesicles and the amount of initiator in the bilayer.…”

Section: Introductionmentioning

confidence: 99%

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Size‐Selective Yolk‐Shell Nanoreactors with Nanometer‐Thin Porous Polymer Shells

Jia

Shmakov

et al. 2015

Chemistry A European J

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Yolk-shell nanoreactors with metal nanoparticle core and ultrathin porous polymer shells are effective catalysts for heterogeneous reactions. Polymer shells provide size-selectivity and improved reusability of catalyst. Nanocapsules with single-nanometer porous shells are prepared by vesicle-templated directed assembly. Metal nanoparticles are formed either by selective initiation in pre-fabricated nanocapsules or simultaneously with the creation of a crosslinked polymer shell. In this study, we investigated the oxidation of benzyl alcohol and benzaldehyde catalyzed by gold nanoparticles and hydrogenation of cyclohexene catalyzed by platinum nanoparticles. Comparison of newly created nanoreactors with commercially available nanoparticles revealed superior reusability and size selectivity in nanoreactors while showing no negative effect on reaction kinetics.

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Section: Resultssupporting

confidence: 86%

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Size‐Selective Yolk‐Shell Nanoreactors with Nanometer‐Thin Porous Polymer Shells

Jia

Shmakov

et al. 2015

Chemistry A European J

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“…1-15 We used them for the synthesis of nanorattles, 1 rigid organic nanodisks, 2 and nanothin membranes containing nanopores with programmed size and chemical environment. 3-6 Other groups also used liposomes to form polymer nanocapsules.…”

Section: Introductionmentioning

confidence: 99%

Scattering Studies of Hydrophobic Monomers in Liposomal Bilayers: An Expanding Shell Model of Monomer Distribution

et al. 2011

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Hydrophobic monomers partially phase-separate from saturated lipids when loaded into lipid bilayers in amounts exceeding 1:1 monomer:lipid molar ratio. This conclusion is based on agreement between two independent methods of examining the structure of monomer-loaded bilayers. Complete phase separation of monomers from lipids would result in increase in bilayer thickness and slight increase in the diameter of liposomes. Homogeneous distribution of monomers within the bilayer would not change the bilayer thickness and would lead to the increase in the liposome diameter. The increase in bilayer thickness, measured by the combination of small angle neutron scattering (SANS) and small angle X-ray scattering (SAXS), was approximately one half of what was predicted for complete phase separation. The increase in liposome diameter, measured by dynamic light scattering (DLS), was in the middle between values predicted for homogeneous distribution and complete phase separation. Combined SANS, SAXS, and DLS data suggest that at 1.2 monomer:lipid ratio, approximately one half of monomers are located in an interstitial layer sandwiched between lipid sheets. These results expand our understanding of using self-assembled bilayers as scaffolds for directed covalent assembly of organic nanomaterials. In particular, partial phase separation of monomers from lipids corroborates successful creation of nanometer-thin polymer materials with uniform imprinted nanopores. Pore-forming templates do not need to span the lipid bilayer to create a pore in the bilayer-templated films.

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“…The number of shells is determined by the number of coating layers. 31,32 However, almost all of the above preparation methods for capsules with multiple particles involve multistep processes. 27,28 In addition, double polymersomes containing several inner polymersomes were prepared using a microfluidic conjunction approach in which the inner material was not solid particles but vesicles.…”

mentioning

confidence: 99%

One-step synthesis of “rattle-like” polymer particles via suspension polymerization

2014

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Simultaneous templating of polymer nanocapsules and entrapped silver nanoparticles

Abstract: Nanorattles made of hollow polymer nanocapsules with entrapped silver nanoparticles were synthesized in one step by using lipid vesicles as templates. Free radical photoinitiator facilitated both polymerization within the bilayer and formation of metal nanoparticles in the aqueous core.

Cited by 44 publications

References 43 publications

Size‐Selective Yolk‐Shell Nanoreactors with Nanometer‐Thin Porous Polymer Shells

Size‐Selective Yolk‐Shell Nanoreactors with Nanometer‐Thin Porous Polymer Shells

Scattering Studies of Hydrophobic Monomers in Liposomal Bilayers: An Expanding Shell Model of Monomer Distribution

One-step synthesis of “rattle-like” polymer particles via suspension polymerization

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