Sequential Nanopatterned Block Copolymer Self-Assembly on Surfaces

Jin, Cong; Olsen, Brian C.; Wu, Nathanael L. Y.; Luber, Erik J.; Buriak, Jillian M.

doi:10.1021/acs.langmuir.6b01365

Cited by 19 publications

(31 citation statements)

References 47 publications

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“…From the previous success of BCPs in nanotechnology, scientist in the field continued to pursue the formation of multifunctional assemblies by utilizing mixed BCP nanostructures . In fact, this attempt, in large part, arose from the experimental observation that optical, electrical, and catalytic functionalities can often be combined to induce synergistic effects, which would be promising for many applications .…”

Section: Introductionmentioning

confidence: 99%

One‐Step Hierarchical Assembly of Spheres‐in‐Lamellae Nanostructures from Solvent‐Annealed Thin Films of Binary Diblock Copolymer Micelles

Kim

Char

Yoo

et al. 2017

Adv Funct Materials

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Hierarchical assemblies of dissimilar block copolymers (BCPs) can reveal interesting perspectives on material properties and device performance by providing multiple functionalities. Up to now, hierarchical assemblies of BCPs have been mostly prepared by stepwise assembling methods, in which the first type of BCP nanodomains is used as predefined patterns to guide the second-level assembly of another BCP. On the other hand, single-step blending methods suffer from a dilemma in the creation of hierarchical patterns because blending dissimilar BCPs typically induces either macrophase separation of component BCPs or chain-level hybridization into a single morphology. The present study is designed to overcome this apparent dilemma in polymer blends by exploiting a solvent annealing method. In particular, hierarchically assembled spheres-in-lamellae structures from a solvent-annealed blended film of binary polystyrene-block-poly(2-vinylpyrdine) and polystyrene-block-poly(4-vinyl pyridine) micelles are prepared. The focus of the current study is to understand the different effects of solvent vapor on the component BCPs and the molecular mechanism for the one-step assembling process. By addressing this issue, the parallelism in the phase behavior of BCP micelles and inorganic nanoparticles is highlighted, the underlying physical processes of which could be suggested as a one-step assembly principle for hierarchical superstructures beyond the previously reported multistep methods.

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Section: Introductionmentioning

confidence: 99%

One‐Step Hierarchical Assembly of Spheres‐in‐Lamellae Nanostructures from Solvent‐Annealed Thin Films of Binary Diblock Copolymer Micelles

Kim

Char

Yoo

et al. 2017

Adv Funct Materials

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“…Interestingly, the spherical BCP morphology has attracted particular attention for the realization of hierarchical structures from iterative self‐assembly. For instance, density multiplication of single layer hexagonal silica dot pattern was demonstrated by Jin et al through the stacking of plasma treated sphere‐forming PS‐ b ‐PDMS monolayers . A first monolayer of hexagonally close‐packed dots was formed by spin‐coating a highly asymmetric PS‐ b ‐PDMS BCP blended with PS homopolymer chains.…”

Section: Immobilization Of Bcp Pattern Via Hybridization Methods For mentioning

confidence: 99%

“…a,b) Sequential self‐assembly process for the formation of density‐doubled dot patterns from sphere‐forming PS‐ b ‐PDMS BCP and SEM images of the single layer hexagonal and double layer honeycomb dot patterns (scale bars: 200 nm). Reproduced with permission . Copyright 2016, American Chemical Society.…”

Section: Immobilization Of Bcp Pattern Via Hybridization Methods For mentioning

confidence: 99%

“…For instance, density multiplication of single layer hexagonal silica dot pattern was demonstrated by Jin et al through the stacking of plasma treated sphere-forming PS-b-PDMS monolayers. [106] A first monolayer of hexagonally close-packed dots was formed by spin-coating a highly asymmetric PS-b-PDMS BCP blended with PS homopolymer chains. The subsequent deposition of the BCP on top of this first plasma treated layer results in the formation of a dot pattern exhibiting a honeycomb lattice, since the dots of the second layer position themselves in the triangular interstitial positions of the first hexagonal pattern, as shown in Figure 5a,b.…”

Section: Immobilization Of Bcp Pattern Via Hybridization Methods For mentioning

confidence: 99%

“…Reproduced with permission. [106] Copyright 2016, American Chemical Society. c,d) Process flow for the fabrication of dot-array-based Moiré superstructures from sphere-forming PS-b-PDMS BCPs with different molecular weights and SEM image of a resulting structure with a relative rotation angle of 3° between the two layers (scale bar: 250 nm).…”

Section: Immobilization Of Bcp Pattern Via Hybridization Methods For mentioning

confidence: 99%

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Non‐Native Block Copolymer Thin Film Nanostructures Derived from Iterative Self‐Assembly Processes

Demazy

Cummins

Aissou

et al. 2019

Adv Materials Inter

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Nanostructured block copolymer (BCP) thin films constitute an elegant tool to generate complex periodic patterns with periodicities ranging from a few nanometers to hundreds of nanometers. Such well‐organized nanostructures are foreseen to enable next‐generation nanofabrication research with potent applications in the design of functional materials in biology, optics or microelectronics. This valuable platform is, however, limited by the geometric features attainable from diblock copolymer architectures considering the thermodynamic driving force leaning toward the formation of structures minimizing the interface between the blocks. Therefore, strategies to enrich the variety of structures obtained by BCP self‐assembly processes are gaining momentum and this progress report reviews the opportunities inherent to iterative BCP self‐assembly by considering the emerging strategies for the generation of “non‐native” morphologies.

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Trilayered Block Copolymer Nanostructures Formed by an Iterative Layering Strategy

Argudo

Demazy

Fleury

2023

Adv Materials Inter

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Nanostructured block copolymer (BCP) thin films enable the formation on‐demand of a variety of periodic patterns at the nanometer scale by tuning the macromolecular BCP characteristics and annealing processes. Significant progress in the control of the self‐assembly has been witnessed over the past decade with the implementation of robust directed self‐assembly methods. However, the self‐assembled structural patterns obtained at equilibrium are limited and methods to expand the range of structural configurations are required to harness additional functionalities. Here, this work demonstrates how polystyrene‐b‐poly(methyl methacrylate) BCP thin layers can be stacked to produce a library of complex 3D hierarchical heterostructures. In this iterative assembly process based on simple building bricks (i.e., immobilized BCP patterns forming Holes, Lines and Dots), the stacking configuration (i.e., self‐assembly and registration) of a BCP thin film is directed with respect to the previous layer using confinement effects and interfacial energy tuning. This responsive layering can lead to intricate 3D Al2O3 structures and opens the way to a broad variety of structural designs toward functional applications.

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Sequential Nanopatterned Block Copolymer Self-Assembly on Surfaces

Cited by 19 publications

References 47 publications

One‐Step Hierarchical Assembly of Spheres‐in‐Lamellae Nanostructures from Solvent‐Annealed Thin Films of Binary Diblock Copolymer Micelles

One‐Step Hierarchical Assembly of Spheres‐in‐Lamellae Nanostructures from Solvent‐Annealed Thin Films of Binary Diblock Copolymer Micelles

Non‐Native Block Copolymer Thin Film Nanostructures Derived from Iterative Self‐Assembly Processes

Trilayered Block Copolymer Nanostructures Formed by an Iterative Layering Strategy

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