Composite materials based on heteroaggregated particles: Fundamentals and applications

Alsharif, Nizar B.; Muráth, Szabolcs; Katana, Bojana; Szilágyi, István

doi:10.1016/j.cis.2021.102456

Cited by 22 publications

(21 citation statements)

References 126 publications

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“…32−34 In our system, the heterocoagulation process between binary microgels is driven by either electrostatic attraction or hydrogen bonding as well as the tendency of microgels to minimize their surface energy. 35 Based on the above results, we illustrate the potential formation mechanism of raspberry-shaped and Janus microgels in Scheme 2. For the sole microgel system, it has been proved that both HA-swollen M-NH 2 and water-swollen M-DS can adsorb to the oil−water interfaces during emulsification (Figure 2f,i).…”

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confidence: 77%

“…In addition, the heterocoagulation between corona particles and core particles can induce the formation of either Janus microgels or raspberry-shaped microgels by precise control of certain concentrations and ratios of M-NH 2 and M-DS. It was reported in many nanoparticle–surfactant systems that ionic surfactants or ethanol molecules can absorb at hydrophilic particles’ surface, thus improving the surface hydrophobicity and leading to a more stable emulsion. − In our system, the heterocoagulation process between binary microgels is driven by either electrostatic attraction or hydrogen bonding as well as the tendency of microgels to minimize their surface energy …”

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confidence: 97%

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Raspberry-Shaped Microgels Assembled at the Oil–Water Interface by Heterocoagulation of Complementary Microgels

et al. 2022

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Raspberry-shaped particles have attracted increasing interest due to their tunable surface morphologies and physicochemical properties. A variety of covalent and noncovalent strategies have been developed for the fabrication of raspberryshaped particles. However, most of these strategies are complex or require precise control of solution conditions. In this work, we develop a direct approach for the fabrication of noncovalent raspberry-shaped microgels. Our strategy works through the electrostatically driven heterocoagulation of binary microgels with complementary functional groups at the oil−water interface. By introducing hexanoic acid (HA) into the oil phase, stable inverse water-in-oil (w/o) Pickering emulsions could be stabilized solely by HA-swollen microgels or self-assembled raspberry-shaped microgels. Furthermore, the formation mechanism and the interfacial properties of interfaces laden with raspberry-shaped microgels were investigated. The results indicate that HA can effectively improve the hydrophobicity and interfacial activity of microgels. In addition, raspberry-shaped microgels achieve high coverage on the droplet surface, resulting in the elastic interface and excellent stability of emulsions. We envision that these results will not only fill a knowledge gap in the field of soft matter interfacial self-assembly, but also will shed light on the rational design of raspberryshaped soft colloids and the on-demand control of interfacial rheology. In addition, we expect that our results will contribute to wider applications of microgel-stabilized emulsions, including cascade catalysis, microreactor, and in vivo drug delivery.

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confidence: 77%

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confidence: 97%

Raspberry-Shaped Microgels Assembled at the Oil–Water Interface by Heterocoagulation of Complementary Microgels

et al. 2022

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“…Such hybrid composites could be further developed to commercial formulations by taking particle heteroaggregation into the design of their preparation strategies. 96 It is also worth noting that LDH materials may be adopted in the field of soil remediation by immobilizing the toxic elements, [97][98][99] which widens the application perspectives of LDH materials in agriculture and environmental sciences. Apart from LDH, some other synthetic clays with similar layered structure but different chemical composition may be the candidates of biomolecule carriers as well, though they have relatively larger size and are not evaluated as carriers but the active components for micronutrients supply.…”

Section: Synthetic Anionic Claysmentioning

confidence: 99%

Eco‐friendly biomolecule‐nanomaterial hybrids as next‐generation agrochemicals for topical delivery

Huang

et al. 2021

EcoMat

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The agrochemical is often applied to enhance the agricultural production.Nanotechnology has advanced agricultural biotechnology in the new "agritech revolution." Eco-friendly nanoparticles as carriers can essentially actualize the application of biomolecules as sustainable agrochemicals to increase their biological performance and reduce deterioration of the ecosystem. Particularly, these nanocarrier-biomolecule hybrids will be ideal for topical applications to enhance the crop yield and quality. This review summarizes the current efforts in developing nanoparticles as carriers of biomolecules for topical delivery. First, the applicable biomolecules for plant growth regulation and the pathogen control are briefly introduced. The criteria and strategies for research and industrial development of nanocarrier-biomolecule hybrids are then proposed, which better involves both researchers and manufacturers in the beginning for an efficient R&D process. The review further discusses several typical nanoparticle-biomolecule hybrids as the candidates of nextgeneration agrochemicals with advanced scientific merits and high perspectives of industrialization as the conclusion.

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“…Generally, heteroaggregates for Pickering emulsion stabilization are formed from oppositely charged nanoparticles that easily assemble due to electrostatic attraction [ 16 , 17 , 18 ]. Although the co-assembly of the like-charged nanoparticles of different types is also possible as a result of dispersion interactions [ 19 ], this approach has never been applied for the colloidosome formation. The development of such systems may expand the possibilities of the production of multifunctional capsules based on Pickering emulsions.…”

Section: Introductionmentioning

confidence: 99%

“…In this work, we studied the formation of submicrocolloidosomes with shells consisting of a mixture of similarly charged DND and Ludox Cl nanoparticles. SiO 2 nanoparticles coated with Al 2 O 3 were chosen for co-assembly with DNDs due to their increased tendency to aggregate [ 19 ]. The aim of this work was to study the possibility of colloidosome stabilization with a mixture of like-charged nanoparticles, and to perform the LbL deposition of a polyelectrolyte shell on the surface of the obtained colloidosomes to regulate the release of the encapsulated substance and reduce the cytotoxicity of the capsules.…”

Section: Introductionmentioning

confidence: 99%

Development of Submicrocapsules Based on Co-Assembled Like-Charged Silica Nanoparticles and Detonation Nanodiamonds and Polyelectrolyte Layers

et al. 2022

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Capsules with shells based on nanoparticles of different nature co-assembled at the interface of liquid phases of emulsion are promising carriers of lipophilic drugs. To obtain such capsules, theoretically using the Derjaguin–Landau–Verwey–Overbeek (DLVO) theory and experimentally using dynamic light-scattering (DLS) and transmission electron microscopy (TEM) methods, the interaction of like-charged silica nanoparticles and detonation nanodiamonds in an aqueous solution was studied and their ratios selected for the formation of submicron-sized colloidosomes. The resulting colloidosomes were modified with additional layers of nanoparticles and polyelectrolytes, applying LbL technology. As a model anti-cancer drug, thymoquinone was loaded into the developed capsules, demonstrating a significant delay of the release as a result of colloidosome surface modification. Fluorescence flow cytometry and confocal laser scanning microscopy showed efficient internalization of the capsules by MCF7 cancer cells. The obtained results demonstrated a high potential for nanomedicine application in the field of the drug-delivery system development.

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Composite materials based on heteroaggregated particles: Fundamentals and applications

Cited by 22 publications

References 126 publications

Raspberry-Shaped Microgels Assembled at the Oil–Water Interface by Heterocoagulation of Complementary Microgels

Raspberry-Shaped Microgels Assembled at the Oil–Water Interface by Heterocoagulation of Complementary Microgels

Eco‐friendly biomolecule‐nanomaterial hybrids as next‐generation agrochemicals for topical delivery

Development of Submicrocapsules Based on Co-Assembled Like-Charged Silica Nanoparticles and Detonation Nanodiamonds and Polyelectrolyte Layers

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