Janus Micelles as Effective Supracolloidal Dispersants for Carbon Nanotubes

Gröschel, André H.; Löbling, Tina I.; Petrov, Petar; Müllner, Markus; Kuttner, Christian; Wieberger, Florian; Müller, Axel H. E.

doi:10.1002/anie.201208293

Cited by 59 publications

(60 citation statements)

References 49 publications

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“…[261][262][263] Thus, applications that require interfacial stabilization may in the future benefit from the superior activity of Janus nanoparti-cles. Their potential use has been demonstrated recently in the compatibilization of homopolymer blends in lab-and industryscale extrusion equipment, 327,328 as colloidal dispersants for carbon nanotubes 329 and in emulsion polymerization. 330 Fig.…”

Section: Soft Janus Nanoparticlesmentioning

confidence: 99%

Self-assembly concepts for multicompartment nanostructures

2015

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Compartmentalization is ubiquitous to many biological and artificial systems, be it for the separate storage of incompatible matter or to isolate transport processes. Advancements in the synthesis of sequential block copolymers offer a variety of tools to replicate natural design principles with tailor-made soft matter for the precise spatial separation of functionalities on multiple length scales. Here, we review recent trends in the self-assembly of amphiphilic block copolymers to multicompartment nanostructures (MCNs) under (semi-)dilute conditions, with special emphasis on ABC triblock terpolymers. The intrinsic immiscibility of connected blocks induces short-range repulsion into discrete nano-domains stabilized by a third, soluble block or molecular additive. Polymer blocks can be synthesized from an arsenal of functional monomers directing self-assembly through packing frustration or response to various fields. The mobility in solution further allows the manipulation of self-assembly processes into specific directions by clever choice of environmental conditions. This review focuses on practical concepts that direct self-assembly into predictable nanostructures, while narrowing particle dispersity with respect to size, shape and internal morphology. The growing understanding of underlying self-assembly mechanisms expands the number of experimental concepts providing the means to target and manipulate progressively complex superstructures.

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Section: Soft Janus Nanoparticlesmentioning

confidence: 99%

Self-assembly concepts for multicompartment nanostructures

2015

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“…In particular, emerging strategies based on the self-assembly of block copolymers (BCPs) have enabled the construction of objects with multiple domains physically segregated on the nanoscale, making it possible to design multifunctional structures with a high degree of spatial control 8,9 . Such methods have enabled the synthesis of functional nanoscale materials of increasing complexity, including photonic crystals 10 , dispersants 11 , polymer vesicles 12,13 , monochromatic barcodes 14 and therapeutic nanoconstructs 15 .…”

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confidence: 99%

Colour-tunable fluorescent multiblock micelles

et al. 2014

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Emerging strategies based on the self-assembly of block copolymers have recently enabled the bottom-up fabrication of nanostructured materials with spatially distinct functional regions. Concurrently, a drive for further miniaturization in applications such as optics, electronics and diagnostic technology has led to intense interest in nanomaterials with well-defined patterns of emission colour. Using a series of fluorescent block copolymers and the crystallization-driven living self-assembly approach, we herein describe the synthesis of multicompartment micelles in which the emission of each segment can be controlled to produce colours throughout the visible spectrum. This represents a bottom-up synthetic route to objects analogous to nanoscale pixels, into which complex patterns may be written. Because of their small size and high density of encoded information, these findings could lead to the development of new materials for applications in, for example, biological diagnostics, miniaturized display technology and the preparation of encoded nanomaterials with high data density.

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“…[14] Noncovalent modification of SWCNTs is particularly attractive because the strategy preserves the intrinsic properties of SWCNTs without disruption to the electronic and optical responses of the system. [15] It has been demonstrated that SWCNTs interact with conjugated species, such as pyrene derivates, [16] phthalocyanines, [17] porphyrins, [18] phenazine, [19] and thionine types of dyes, [20] based on π-π stacking. Twelve-membered cyclodextrins [21] and select DNA sequences [22] have also been reported to allow structure-specific recognition of SWCNTs with specific surface structure due to host-guest supramolecular complexation.…”

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confidence: 99%

Supramolecularly Knitted Tethered Oligopeptide/Single‐Walled Carbon Nanotube Organogels

Zou

Fan

et al. 2014

Chemistry A European J

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A facile polymerization of an allyl-functional N-carboxyanhydride (NCA) monomer is utilized to construct an A-B-A type triblock structure containing β-sheet-rich oligomeric peptide segments tethered by a poly(ethylene oxide) chain, which are capable of dispersing and gelating single-walled carbon nanotubes (SWCNTs) noncovalently in organic solvents, resulting in significant enhancement of the mechanical properties of polypeptide-based organogels.

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Janus Micelles as Effective Supracolloidal Dispersants for Carbon Nanotubes

Cited by 59 publications

References 49 publications

Self-assembly concepts for multicompartment nanostructures

Self-assembly concepts for multicompartment nanostructures

Colour-tunable fluorescent multiblock micelles

Supramolecularly Knitted Tethered Oligopeptide/Single‐Walled Carbon Nanotube Organogels

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