Development of various PS-b-P4VP micellar morphologies: Fabrication of inorganic nanostructures from micellar templates

Cho, Heesook; Park, Hyungmin; Park, Soo‐Jin; Choi, Heungyeal; Huang, Haiying; Chang, Taihyun

doi:10.1016/j.jcis.2011.01.001

Cited by 24 publications

(30 citation statements)

References 32 publications

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“…The EDS results suggest that most of the Co precursors were selectively introduced into the P4VP spheres, whereas the Ti and La precursors were selectively introduced into the PS matrix ( Table 1). The observed morphology arose via the selective dissolution of the PS block in THF, which resulted in the dissolution of the firstly introduced Co precursors in P4VP spheres embedded in a PS matrix containing the La and Ti precursors [6].…”

Section: Resultsmentioning

confidence: 99%

Synthesis of metal oxide nanocomposites from self-assembled block copolymer templates as cathode materials for all-solid-state lithium batteries

Wakayama

Yonekura

Kawai

2018

IJNT

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Self-assembled structures are useful for fabrication of nanostructures as a sustainable process with minimum energy consumption. Alternately stacked layers on a nanometre scale are produced by adsorption process denoted as layer by layer process, however, shape is limited in layers and chemical composition is also limited. Superlattice structures are produced by sputtering or self-assembly process using nanoparticles. But the construction of three-dimensional ordered inorganic nanocomposite structures remains a great challenge. All-solid-state lithium batteries (LiBs) are attracting much attention as innovative devices for upsized safety secondary batteries with high energy density. However, bulk-type all-solid-state LiBs face a number of hurdles, particularly the construction of an electrochemically favourable interface between the solid Li electrolytes and the active materials. In this study, we synthesised inorganic nanocomposite cathode materials by using self-assembled block copolymers (BCPs) as templates; this nanocomposite was composed of Li 0.5 La 0.5 TiO 3 (LLT) as the electrolyte and LiCoO 2 (LCO) as the cathode active material. Several LCO/LLT ratios were examined with the goal of producing a nanocomposite for use in all-solid-state LiBs. This nanostructured material, with the electrochemically favourable interface between electrode and electrolyte, resulted in a high capacity even at a high LCO content. The process we used to prepare the nanocomposite is expected to be versatile for producing other highly functional devices, such as quantum dot solar cells, thermoelectrics, and solid oxide fuel cells.

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Section: Resultsmentioning

confidence: 99%

Synthesis of metal oxide nanocomposites from self-assembled block copolymer templates as cathode materials for all-solid-state lithium batteries

Wakayama

Yonekura

Kawai

2018

IJNT

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“…CHCl 3 is typically considered to be a good or nonselective solvent for both PS and P4VP blocks . THF and DOX are PS‐selective solvents while DMF is nearly a theta solvent for PS and a slightly good solvent for P4VP . Therefore, the binary mixture of DMF/THF:50/50 (w/w) can be considered as a partially selective solvent mixture toward the PS block.…”

Section: Resultsmentioning

confidence: 99%

Structure Formation of Binary Blends of Amphiphilic Block Copolymers in Solution and in Bulk

Radjabian

Abetz

Fischer

et al. 2017

Macro Chemistry & Physics

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The self‐assembly and structure formation in binary blends of asymmetric polystyrene‐block‐poly(4‐vinylpyridine) diblock copolymers in different solvent systems and the bulk morphology of the blend films are studied by using dynamic light scattering, small‐angle X‐ray scattering, and transmission electron microscopy. In dilute solutions, the chains of pure diblock copolymers or binary blends of diblock copolymers having similar or different molecular weights remain as unimers, form common micelles in selective solvents or form unimers in coexistence with micelles in slightly selective solvents or solvent mixtures. The blends show mixing of the chemically similar blocks in the blend films and solutions at high concentrations. A single‐phase with common spherical morphology is formed in the blend films similar with the morphology of the individual components in the pure state. The characteristic length scale of the blends depends on the number average molecular weight following the typical scaling behavior of a strongly segregated block copolymer.

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“…Micelle formation can be used to form metal nanoarrays; [153][154][155] however the associated co-ordination chemistry can be complex, particularly for BCPs not possessing a direct bonding site. Moreover, in technologies such as lithography and fl uidics, pattern placement is paramount and therefore micelle formation restricts line space feature formation and high registration being achieved.…”

Section: Reviewmentioning

confidence: 99%

Strategies for Inorganic Incorporation using Neat Block Copolymer Thin Films for Etch Mask Function and Nanotechnological Application

et al. 2016

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Block copolymers (BCPs) and their directed self-assembly (DSA) has emerged as a realizable complementary tool to aid optical patterning of device elements for future integrated circuit advancements. Methods to enhance BCP etch contrast for DSA application and further potential applications of inorganic nanomaterial features (e.g., semiconductor, dielectric, metal and metal oxide) are examined. Strategies to modify, infiltrate and controllably deposit inorganic materials by utilizing neat self-assembled BCP thin films open a rich design space to fabricate functional features in the nanoscale regime. An understanding and overview on innovative ways for the selective inclusion/infiltration or deposition of inorganic moieties in microphase separated BCP nanopatterns is provided. Early initial inclusion methods in the field and exciting contemporary reports to further augment etch contrast in BCPs for pattern transfer application are described. Specifically, the use of evaporation and sputtering methods, atomic layer deposition, sequential infiltration synthesis, metal-salt inclusion and aqueous metal reduction methodologies forming isolated nanofeatures are highlighted in di-BCP systems. Functionalities and newly reported uses for electronic and non-electronic technologies based on the inherent properties of incorporated inorganic nanostructures using di-BCP templates are highlighted. We outline the potential for extension of incorporation methods to triblock copolymer features for more diverse applications. Challenges and emerging areas of interest for inorganic infiltration of BCPs are also discussed.

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Development of various PS-b-P4VP micellar morphologies: Fabrication of inorganic nanostructures from micellar templates

Cited by 24 publications

References 32 publications

Synthesis of metal oxide nanocomposites from self-assembled block copolymer templates as cathode materials for all-solid-state lithium batteries

Synthesis of metal oxide nanocomposites from self-assembled block copolymer templates as cathode materials for all-solid-state lithium batteries

Structure Formation of Binary Blends of Amphiphilic Block Copolymers in Solution and in Bulk

Strategies for Inorganic Incorporation using Neat Block Copolymer Thin Films for Etch Mask Function and Nanotechnological Application

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