Evolution of the “knitting pattern” morphology in ABC triblock copolymers

Breiner, U.; Krappe, Udo; Stadler, Reimund

doi:10.1002/marc.1996.030170810

Cited by 98 publications

(113 citation statements)

References 5 publications

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“…The larger number of interaction parameters causes microphase separation into a rich variety of morphologies [35][36][37], quasi-crystalline patterns [38], knitting patterns [39], and even phases akin to metals [40]. Lamellar morphologies are of particular -3 -interest, because cross-linkable middle domains that are "sandwiched" between terminal lamellae are the main source for a variety of polymeric Janus nanoparticles with specific geometry [41].…”

Section: Introductionmentioning

confidence: 99%

Controlling the shape of Janus nanostructures through supramolecular modification of ABC terpolymer bulk morphologies

Hiekkataipale

Löbling

Poutanen

et al. 2016

Polymer

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of the original manuscript:Hiekkataipale, P.; Loebling, T.I.; Poutanen, M.; Priimagi, A.; Abetz, V.; Ikkala, O.; Groeschel, A.H.: Controlling the shape of Janus nanostructures through supramolecular modification of ABC terpolymer bulk morphologies In: Polymer (2016 Abstract: Block copolymers microphase separate into a variety of bulk morphologies that serve as scaffolds, templates, masks and source for polymeric nano-particles. While supramolecular additives are common to complex within diblock copolymers to modify the morphology, the subtle effects of complexation on ABC triblock terpolymer morphologies are less explored. Here, we describe the manipulation of polystyrene-block-poly(4-vinylpyridine)-blockpoly(tert-butyl methacrylate) (PS-b-P4VP-b-PT or S4VT) triblock terpolymer bulk morphologies through supramolecular complexation with rod-like 4-(4-pentylphenylazo)phenol (5PAP).The 5PAP molecule hydrogen bonds by phenolic groups to the 4VP repeating units and with increasing molar fraction of 5PAP, initially observed P4VP cylinders flatten into elliptic cylinders until a morphological transition occurs into a third (P4VP/5PAP) lamella. At sufficient 5PAP loadings, the cylinders can even merge into a perforated P4VP lamella located at the PS/PT interface. Quaternization of the P4VP phase and re-dispersion in organic solvent allows liberating S4VT Janus nanostructures from the bulk, including Janus cylinders, nanoporous Janus membranes and Janus sheets. The manipulation of "sandwiched" microphases through supramolecular binding motifs could allow the preparation of previously inaccessible terpolymer bulk morphologies and, in case of cross-linkable phases, lead to a larger library of Janus nano-objects.

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Section: Introductionmentioning

confidence: 99%

Controlling the shape of Janus nanostructures through supramolecular modification of ABC terpolymer bulk morphologies

Hiekkataipale

Löbling

Poutanen

et al. 2016

Polymer

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“…Playing with the flexibility/rigidity of the polymer segments, various new morphologies could be discovered and some of them have been confirmed experimentally [110][111][112]. A series of papers [113][114][115][116][117] In this case, the morphology seems to be governed by the relatively weak incompatibility of the end blocks PS and PMMA rather than the strong incompatibility of the polybutadiene (PB) or poly(ethylene-co-butylene).…”

Section: Bulk Morphologiesmentioning

confidence: 89%

Dynamic Assembly of Block-Copolymers

Quémener¹,

Deratani²,

Lecommandoux³

2011

Constitutional Dynamic Chemistry

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Block copolymers (BCs) are well-known building blocks for the creation of a large variety of nanostructured materials or objects through a dynamic assembly stage which can be either autonomous or guided by an external force. Today's nanotechnologies require sharp control of the overall architecture from the nanoscale to the macroscale. BCs enable this dynamic assembly through all the scales, from few aggregated polymer chains to large bulk polymer materials. Since the discovery of controlled methods to polymerize monomers with different functionalities, a broad diversity of BCs exists, giving rise to many different nanoobjects and nanostructured materials. This chapter will explore the potentialities of block copolymer chains to be assembled through dynamic interactions either in solution or in bulk.

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“…8. The morphological variation expands further when we take into account combination with the network morphology such as Fddd and Ia 3 d. In reality, extremely complex morphologies such as "knitting pattern" morphology [28] and "barber pattern" morphology [29], which are hard to imagine from our knowledge on the microdomain morphology of AB diblock copolymers, have been observed. Because of such wide variety of morphologies, ABC triblock terpolymers should have much better capability for applications than AB diblock copolymers if their microdomain structures can be appropriately controlled and useful functions are given to each microdomain.…”

Section: Linear Abc Triblock Terpolymersmentioning

confidence: 97%

Block Copolymers and Miktoarm Star-Branched Polymers

Hasegawa

2015

Anionic Polymerization

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Block copolymers self-assemble to form extremely regular nanoscale microdomain structures with a variety of morphologies. The microdomain morphology depends on the chain architectures, number of components, copolymer compositions, segregation power between the components as well as the ordering processes. In this chapter how these factors affect the microdomain morphology is mentioned. (Fig. 1a). On the other hand, a variety of polymer architectures can be produced by connecting the chain ends of three or more polymer chains for miktoarm starbranched polymers (Fig. 1b). KeywordsWhen the segregation power between the block chains of different kinds is strong enough for block copolymers and miktoarm star-branched polymers, they segregate from each other to form a phase-separated structure. However, because of the connectivity between the block chains, large domain structures typically of the order of micron sizes observed in polymer blends cannot grow into block copolymers and miktoarm star-branched polymers. Instead, they form regular periodic domain structures of 10-100 nm size with various morphologies via self-assembly.

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Evolution of the “knitting pattern” morphology in ABC triblock copolymers

Cited by 98 publications

References 5 publications

Controlling the shape of Janus nanostructures through supramolecular modification of ABC terpolymer bulk morphologies

Controlling the shape of Janus nanostructures through supramolecular modification of ABC terpolymer bulk morphologies

Dynamic Assembly of Block-Copolymers

Block Copolymers and Miktoarm Star-Branched Polymers

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