Nanoporous Network Channels from Self‐Assembled Triblock Copolymer Supramolecules

Sart, Gerrit Gobius du; Vuković, Ivana; Vuković, Ž.; Polushkin, Evgeny; Hiekkataipale, Panu; Ruokolainen, Janne; Loos, Katja; Brinke, G. ten

doi:10.1002/marc.201000674

Cited by 37 publications

(20 citation statements)

References 49 publications

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“…A supramolecular complexation of small-molecular additives, however, could allow a more accurate, continuous adjustment of the shape of the middle phase in very small steps to possibly identify other geometries besides sphere, cylinder and lamellae, towards a larger family of Janus nanostructures. Since mainly terminal block of ABC triblock terpolymers have been supramolecularly grafted [48][49][50], the effect of complexation on the sandwiched phase with two unlike phase boundaries is less known.…”

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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“…In this structure, the pore orientation is continuous in three directions and alignment is no longer an issue. These continuous morphologies have been reported for triblock copolymers, for example, poly(tert-butoxystyrene)-block-PS-block-P4VP [45]. To generate the most unfavorable interactions between the different blocks less than stoichiometric amounts of PDP were used to form H-bonds with the P4VP block.…”

Section: Hydrogen Bonding In Block Copolymers As Nanoporous Networkmentioning

confidence: 98%

“…The carboxylic Nanoporous materials based on hydrogen bonded block copolymers could be used in various application such as separation, filtration, ion exchange, catalysis, and sensors [47]. Ten Brinke, Loos et al successfully applied nanoporous materials based on hydrogen bonded block copolymers as a template for the fabrication of highly porous metal foams [44][45][46]48]. These foams combine the properties of porous polymer materials with those of metals and might be used in applications such as high-power density batteries, catalysts, or hydrogen storage materials.…”

Section: Hydrogen Bonding In Block Copolymers As Nanoporous Networkmentioning

confidence: 99%

Hydrogen Bonding in Supramolecular Nanoporous Materials

Kuringen¹,

Schenning

2015

Lecture Notes in Chemistry

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This chapter provides an overview of the use of hydrogen bonds for the construction of nanoporous materials. These materials attract a great deal of interest because of their large surface area to volume ratio and their applications in areas such as filtration, separation, adsorption, catalysis, and ion conduction. Organic materials are especially appealing for these applications, because their properties can be tailored. The use of supramolecular interactions is required to control the organization of materials at the molecular level. Hydrogen bonds are ideal supramolecular interactions for the construction of these nanoporous materials, thanks to their directionality and reversibility. The directionality causes the positioning molecules in such a way that voids have been created in between the molecules, such as in two-and three-dimensional hydrogen bonded organic frameworks. In a second approach, hydrogen bonded template molecules have been removed from a polymer to create pores. This method is successfully applied to hydrogen bonded block copolymers and liquid crystalline polymers.

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“…6(c) suggests that the prior pore space is well connected and is accessible for the plating solution. Ni was also successfully plated into nanochannels in a bicontinuous double gyroid template containing PS, 62 as shown in Fig. 6(d).…”

Section: B Electroless Platingmentioning

confidence: 99%

Template-based fabrication of nanoporous metals

Rebbecchi

Chen

2017

J. Mater. Res.

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Nanoporous metallic foams with high surface area and novel functional behavior are positioned to stimulate new multifunctional and metamaterial applications. However, there are fundamental challenges in achieving uniform nanopores and tailorable morphology. Emerging templating methods offer a wide range of applicable metallic species while enhancing control of pore morphology, uniformity, and interconnectivity. Here, a critical review of nanoporous metal fabrication is presented, with focus on templating methods utilizing nanoporous polymeric templates. Metals are introduced into percolative nanochannels of sacrificial templates by deposition, and subsequent removal of templates yields ordered nanoporous metals. We introduce approaches for preparing nanoporous templates, including utilizing block copolymer self-assembly that yields periodic gyroid networks. While metallization of templates by electrodeposition has been demonstrated, electroless deposition permits uniform deposition by many metallic species and infiltration of narrow pores. Examples of nanoporous metals with uniform pore sizes below 50 nm fabricated by templating methods are examined.

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Nanoporous Network Channels from Self‐Assembled Triblock Copolymer Supramolecules

Cited by 37 publications

References 49 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

Hydrogen Bonding in Supramolecular Nanoporous Materials

Template-based fabrication of nanoporous metals

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