Nanoparticle-Induced Self-Assembly of Block Copolymers into Nanoporous Films at the Air–Water Interface

Kang, Seulki; Ryu, Du Yeol; Ringe, Emilie; Hickey, Robert J.; Park, Soo‐Young

doi:10.1021/acsnano.0c05908

Cited by 24 publications

(21 citation statements)

References 50 publications

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“…We called this developed method the liquid/liquid interfacial water hole templating method. The penetration of the wall is a structural characteristic of the honeycomb structure formed through the breath figure method, which confirms the water hole templating method here . This method is similar but different from the breath figure method.…”

Section: Resultssupporting

confidence: 58%

Self-Assembly of Polystyrene-b-poly(2-vinylpyridine)/Chloroauric Acid at the Liquid/Liquid Interface

et al. 2022

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The self-assembly of polystyrene-block-poly(2-vinylpyridine) at the liquid/liquid interface has been systematically investigated to develop a series of primary morphologies of the aggregates. The block copolymers self-assembled into large areas of nanodot arrays, parallel nanostrands, layered films, parallel nanobelts, honeycomb monolayers, and foams by reacting with chloroauric acid, depending on the molecular structure of the block copolymers and the amount of chloroauric acid. The formation of the first four ordered structures resulted from interfacial adsorption and self-assembly, and nucleation and epitaxial growth. The latter two structures were attributed to the water hole templating effect and spontaneous interfacial emulsification, respectively. This work provides insight into the self-assembly behavior of block copolymers at the interface and provides a facile approach for fabricating functional structures.

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Section: Resultssupporting

confidence: 58%

Self-Assembly of Polystyrene-b-poly(2-vinylpyridine)/Chloroauric Acid at the Liquid/Liquid Interface

et al. 2022

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“…Replacement of Lewis base P2 with the less sterically demanding P3 for the polymerization of all these 4VP derivatives did not show any improved results (Table S1 in the Supporting Information). The polymers produced from substituted 4VPs may be complementary to the high-value poly(vinylpyridine) materials. − …”

Section: Resultsmentioning

confidence: 99%

Rare-Earth Aryloxide/Ylide-Functionalized Phosphine Frustrated Lewis Pairs for the Polymerization of 4-Vinylpyridine and Its Derivatives

Zhao

Zhang

et al. 2021

Macromolecules

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This work reports the efficient polymerization of 4-vinylpyridine (4VP) using Lewis pairs composed of homoleptic rare-earth (RE) aryloxides and ylide-functionalized phosphines (YPhos). The resultant P4VP was readily quaternized by the addition of 1-bromododecane. Polymerization of 4VP derivatives (2-methoxy-4-vinylpyridine, 4-vinylquinoline, and 2,6dimethyl-4-vinylpyridine) also occurred under identical reaction conditions. The RE/YPhos Lewis pair polymerization system effectively copolymerized 4VP with methyl methacrylate, which resulted in copolymers with gradient architectures and narrow molecular weight distributions. A combined experimental and computational study provided critical insights into the polymerization mechanism. Density functional theory calculations also revealed that the use of YPhos as a Lewis base greatly facilitated both the initiation and subsequent monomer insertion in comparison with PEt 3 .

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“…[7] In particular, diblock copolymers 2107667 (2 of 9) (DBCs) have been proven as a powerful matrix and an effective template to host NPs, due to the ability to form various periodic nanostructures (such as cylinders, lamellae, and spheres). [10][11][12] Moreover, the DBC-assisted magnetic NPs assembly is also an effective approach to control the NP arrangement inside the polymer matrix due to the different interactions of the NPs with the two blocks of the DBC.…”

Section: Introductionmentioning

confidence: 99%

In Situ Study of FePt Nanoparticles‐Induced Morphology Development during Printing of Magnetic Hybrid Diblock Copolymer Films

Cao

Yin

Bitsch

et al. 2021

Adv Funct Materials

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The development of magnetic hybrid films containing diblock copolymers (DBCs) and magnetic nanoparticles (NPs) by printing is a highly promising method for scalable and low-cost fabrication. During printing, the drying and arrangement kinetics of the DBC and magnetic NPs play an important role in the film formation concerning morphology and magnetic properties. In this study, the morphology evolution of ultrahigh molecular weight DBC polystyrene-block-poly(methyl methacrylate) and magnetic iron platinum (FePt) NPs is investigated with grazing-incidence small-angle X-ray scattering (GISAXS) in situ during printing. For comparison, a pure DBC film is printed without FePt NPs under the same conditions. The GISAXS data suggest that the addition of NPs accelerates the solvent evaporation, leading to a faster film formation of the hybrid film compared to the pure film. As the solvent is almost evaporated, a metastable state is observed in both films. Compared with the pure film, such a metastable state continues longer during the printing process of the hybrid film because of the presence of FePt NPs, which inhibits the reorganization of the DBC chains. Moreover, investigations of the field-dependent magnetization and temperature-dependent susceptibility indicate that the printed hybrid film is superparamagnetic, which makes this film class promising for magnetic sensors.

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Nanoparticle-Induced Self-Assembly of Block Copolymers into Nanoporous Films at the Air–Water Interface

Cited by 24 publications

References 50 publications

Self-Assembly of Polystyrene-b-poly(2-vinylpyridine)/Chloroauric Acid at the Liquid/Liquid Interface

Self-Assembly of Polystyrene-b-poly(2-vinylpyridine)/Chloroauric Acid at the Liquid/Liquid Interface

Rare-Earth Aryloxide/Ylide-Functionalized Phosphine Frustrated Lewis Pairs for the Polymerization of 4-Vinylpyridine and Its Derivatives

In Situ Study of FePt Nanoparticles‐Induced Morphology Development during Printing of Magnetic Hybrid Diblock Copolymer Films

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