2020
DOI: 10.1002/pol.20200382 View full text |Buy / Rent full text
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Abstract: Hairy nanoparticles (HNPs) constitute a class of hybrid nanocomposites that are resistant to aggregation and agglomeration, although the green, large‐scale synthesis of HNPs remains a challenge. In this work, 25 nm‐diameter silica‐core HNPs with a poly(methyl methacrylate) (PMMA) shell were synthesized using a graft‐from approach in aqueous miniemulsion, employing atom transfer radical polymerization with activators regenerated by electron transfer (ARGET‐ATRP). In particular, this work used tetrabutylammonium… Show more

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“…This has been previously observed for SiO 2 -PMMA PGNs, with a polymer content above 30 wt%. [19] Whereas the self-assembly of polymeric colloid micro-and nanoparticles is well studied, [26] the formation of 2D and 3D superlattice structures of PGNs is affected by factors such as the nanoparticle size, graft density, the molar mass of the grafted chains as well as the properties and interparticle interactions of the polymer chains. [27] Dynamic light scattering (DLS) measurements of the synthesized PGNs are showing a narrow size distribution and an increasing diameter with increasing graft density confirming the successful polymerization of a polymer corona on silica particles, see Supporting Information, Figure S4.…”
Section: Samplementioning
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rupbmjkragerfmgwileyiopcupepmcmbcthiemesagefrontiersapsiucrarxivemeralduhksmucshluniversity-of-gavle
“…This has been previously observed for SiO 2 -PMMA PGNs, with a polymer content above 30 wt%. [19] Whereas the self-assembly of polymeric colloid micro-and nanoparticles is well studied, [26] the formation of 2D and 3D superlattice structures of PGNs is affected by factors such as the nanoparticle size, graft density, the molar mass of the grafted chains as well as the properties and interparticle interactions of the polymer chains. [27] Dynamic light scattering (DLS) measurements of the synthesized PGNs are showing a narrow size distribution and an increasing diameter with increasing graft density confirming the successful polymerization of a polymer corona on silica particles, see Supporting Information, Figure S4.…”
Section: Samplementioning
“…[16][17][18] We recently reported the synthesis of PGNs with poly(methyl methacrylate) corona and silica core using ARGET-ATRP in a water-based miniemulsion process, in which the grafting density and chain length could be controlled. [19] Polymer chain entanglement is normally the primary mechanism for interactions between PGNs, controlled by graft density, i.e., the length and number of the grafted polymer chains. [24,25] However, for PGNs with very small diameters, grafted polymer chains are so short that entanglement is not normally sufficient to support the self-assembly and interaction of PGNs into robust 2D superlattice structures.…”
Section: Introductionmentioning
“…However, our results show that using a large excess of reducing agent still provides the same level of control over lower amounts. Since the system relies on TBAB to act as a shuttling agent for the catalyst, 25,30,31 it is possible that the diffusion of Cu 1+ -Br/ TPMA is limited by the TBAB shuttle. Once Cu 2+ is converted to Cu 1+ , it becomes hydrophobic enough to prefer the monomer phase instead of the aqueous phase.…”
Section: Samplementioning
“…For example, with such materials it is possible to foresee the formation of functional arrays on desired surfaces with the assistance of the patterned brushes, where the active functional groups on the tips of the brushes act as specific binding sites of nanoparticles. 33 Such arrays could be the building blocks of the functional optical, electrical, sensor, or chemical devices 34,35 or high-density magnetic storage medium. 36,37 The mild conditions of vapor phase deposition make this method particularly useful in combination with the EBL for the patterning procedure.…”
mentioning
“…It is a future goal to study how surface-modification of the end functional patterned rod brushes can form precisely placed, controlled attachments and the performance of such functional films. For example, with such materials it is possible to foresee the formation of functional arrays on desired surfaces with the assistance of the patterned brushes, where the active functional groups on the tips of the brushes act as specific binding sites of nanoparticles . Such arrays could be the building blocks of the functional optical, electrical, sensor, or chemical devices , or high-density magnetic storage medium. , …”
mentioning