Janus nanoparticles inside polymeric materials: interfacial arrangement toward functional hybrid materials

Yang, Qingsong; Loos, Katja

doi:10.1039/c6py01795a

Cited by 59 publications

(39 citation statements)

References 163 publications

(201 reference statements)

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“…This application potential has led to the steadily growing research interest in Janus particles. Consequently, a number of review articles have been published in the past decade [ 1 , 2 , 3 , 4 , 5 , 6 , 7 , 8 , 9 , 10 ]. A subsection of Janus particles are patchy particles, which consist of spheres decorated with one or multiple functional patches on their surfaces [ 7 , 8 , 9 , 10 , 11 , 12 ].…”

Section: Introductionmentioning

confidence: 99%

Synthesis of Polystyrene–Polyphenylsiloxane Janus Particles through Colloidal Assembly with Unexpected High Selectivity: Mechanistic Insights and Their Application in the Design of Polystyrene Particles with Multiple Polyphenylsiloxane Patches

et al. 2017

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Janus particles are of great research interest because of their reduced symmetry, which provides them with unique physical and chemical properties. Such particles can be prepared from spherical structures through colloidal assembly. Whilst colloidal assembly has the potential to be a low cost and scalable process, it typically lacks selectivity. As a consequence, it results in a complex mixture of particles of different architectures, which is tedious to purify. Very recently, we reported the colloidal synthesis of Au semishells, making use of polystyrene-polyphenylsiloxane Janus particles as an intermediate product (Chem. Commun. 2017, 53, 3898-3901). Here, we demonstrate that these Janus particles are realized through colloidal assembly of spherical glucose-functionalized polystyrene particles and an emulsion of phenyltrimethoxysilane in aqueous ammonia, followed by interfacial polycondensation to form the polyphenylsiloxane patch. Both the polystyrene spheres and the emulsion of Ph-TMS in aqueous ammonia are stabilized by a surfmer-a reactive surfactant. The colloidal assembly reported in this manuscript proceeds with an unexpected high selectivity, which makes this process exceptionally interesting for the synthesis of Janus particles. Furthermore, we report insights into the details of the mechanism of formation of these Janus particles, and apply those to adapt the synthesis conditions to produce polystyrene particles selectively decorated with multiple polyphenylsiloxane patches, e.g., raspberry particles.

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Section: Introductionmentioning

confidence: 99%

Synthesis of Polystyrene–Polyphenylsiloxane Janus Particles through Colloidal Assembly with Unexpected High Selectivity: Mechanistic Insights and Their Application in the Design of Polystyrene Particles with Multiple Polyphenylsiloxane Patches

et al. 2017

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“…They couple many of the advantageous characteristics of polymers, such as flexibility, processability and ductility, to enhanced thermal and mechanical stability as well as optical, electrical, magnetic and other intriguing NPs’ properties. Incorporating nano-sized rather than micron-sized fillers poses a comparatively relevant difference in terms of available polymer/NP interface, where the interactions between the two species are able to enhance the material performance by triggering new properties [ 1 ]. In particular, NPs display a surface area-to-volume ratio that is orders of magnitude larger than that provided by similarly shaped micrometric particles, with the tremendous potential of generating new properties at a relatively low loading [ 2 ].…”

Section: Introductionmentioning

confidence: 99%

Molecular Dynamics of Janus Nanodimers Dispersed in Lamellar Phases of a Block Copolymer

Burgos-Mármol

Patti

2021

Polymers

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We investigate structural and dynamical properties of Janus nanodimers (NDs) dispersed in lamellar phases of a diblock copolymer. By performing molecular dynamics simulations, we show that an accurate tuning of the interactions between NDs and copolymer blocks can lead to a close control of NDs’ space distribution and orientation. In particular, NDs are preferentially found within the lamellae if enthalpy-driven forces offset their entropic counterpart. By contrast, when enthalpy-driven forces are not significant, the distribution of NDs, preferentially observed within the inter-lamellar spacing, is mostly driven by excluded-volume effects. Not only does the degree of affinity between host and guest species drive the NDs’ distribution in the polymer matrix, but it also determines their space orientation. In turn, these key structural properties influence the long-time dynamics and the ability of NDs to diffuse through the polymer matrix.

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“…Different assemblies such as spherical nanoparticles assembly, Janus assemblies, patchy assemblies, colloidal molecules, compartmentalized nanoparticles, colloidal assemblies, core–shell micellar assemblies, vesicle assemblies, and polymerization‐induced self‐assemblies have been realized with better control by various methods. [ 5,33–42 ] The interactions between different types of nanoparticle constituents are playing a crucial role during the formation of assemblies.…”

Section: Introductionmentioning

confidence: 99%

Hierarchical Assemblies of Polymer Particles through Tailored Interfaces and Controllable Interfacial Interactions

Visaveliya

Köhler

2020

Adv Funct Materials

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Hierarchical assembly architectures of functional polymer particles are promising because of their physicochemical and surface properties for multi‐labeling and sensing to catalysis and biomedical applications. While polymer nanoparticles’ interior is mainly made up of the cross‐linked network, their surface can be tailored with soft, flexible, and responsive molecules and macromolecules as potential support for the controlled particulate assemblies. Molecular surfactants and polyelectrolytes as interfacial agents improve the stability of the nanoparticles whereas swellable and soft shell‐like cross‐linked polymeric layer at the interface can significantly enhance the uptake of guest nano‐constituents during assemblies. Besides, layer‐by‐layer surface‐functionalization holds the ability to provide a high variability in assembly architectures of different interfacial properties. Considering these aspects, various assembly architectures of polymer nanoparticles of tunable size, shapes, morphology, and tailored interfaces together with controllable interfacial interactions are constructed here. The microfluidic‐mediated platform has been used for the synthesis of constituents polymer nanoparticles of various structural and interfacial properties, and their assemblies are conducted in batch or flow conditions. The assemblies presented in this progress report is divided into three main categories: cross‐linked polymeric network's fusion‐based self‐assembly, electrostatic‐driven assemblies, and assembly formed by encapsulating smaller nanoparticles into larger microparticles.

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Janus nanoparticles inside polymeric materials: interfacial arrangement toward functional hybrid materials

Cited by 59 publications

References 163 publications

Synthesis of Polystyrene–Polyphenylsiloxane Janus Particles through Colloidal Assembly with Unexpected High Selectivity: Mechanistic Insights and Their Application in the Design of Polystyrene Particles with Multiple Polyphenylsiloxane Patches

Synthesis of Polystyrene–Polyphenylsiloxane Janus Particles through Colloidal Assembly with Unexpected High Selectivity: Mechanistic Insights and Their Application in the Design of Polystyrene Particles with Multiple Polyphenylsiloxane Patches

Molecular Dynamics of Janus Nanodimers Dispersed in Lamellar Phases of a Block Copolymer

Hierarchical Assemblies of Polymer Particles through Tailored Interfaces and Controllable Interfacial Interactions

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