The micellar behavior of linear triblock terpolymers of styrene (S), isoprene (I), and methyl methacrylate (MMA) in selective solvents for PS and PMMA

Fernyhough, Christine M.; Pantazis, Dimitris; Pispas, Stergios; Hadjichristidis, Nikos

doi:10.1016/j.eurpolymj.2003.09.025

Cited by 15 publications

(9 citation statements)

References 34 publications

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“…3a–c , Supplementary Fig. S1 and Table S1 ) 45 . In a second step, to direct the structure formation, dialysis against an acetone/isopropanol mixture (60/40 v/v) triggers the collapse of the PS block within the corona and induces higher-level aggregation of the subunits into the final multicompartment-core micelles (MCMs, Fig.…”

Section: Resultsmentioning

confidence: 99%

Precise hierarchical self-assembly of multicompartment micelles

et al. 2012

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Hierarchical self-assembly offers elegant and energy-efficient bottom-up strategies for the structuring of complex materials. For block copolymers, the last decade witnessed great progress in diversifying the structural complexity of solution-based assemblies into multicompartment micelles. However, a general understanding of what governs multicompartment micelle morphologies and polydispersity, and how to manipulate their hierarchical superstructures using straightforward concepts and readily accessible polymers remains unreached. Here we demonstrate how to create homogeneous multicompartment micelles with unprecedented structural control via the intermediate pre-assembly of subunits. This directed self-assembly leads to a step-wise reduction of the degree of conformational freedom and dynamics and avoids undesirable kinetic obstacles during the structure build-up. It yields a general concept for homogeneous populations of well-defined multicompartment micelles with precisely tunable patchiness, while using simple linear ABC triblock terpolymers. We further demonstrate control over the hierarchical step-growth polymerization of multicompartment micelles into micron-scale segmented supracolloidal polymers as an example of programmable mesoscale colloidal hierarchies via well-defined patchy nanoobjects.

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Section: Resultsmentioning

confidence: 99%

Precise hierarchical self-assembly of multicompartment micelles

et al. 2012

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“…The copolymers of MMA/BzMA with ca. 75 and 50 mol% of MMA (as well as homopolymer PBzMA) were prepared by free radical (co)polymerisation with 2,2 0 -azobis(isobutyronitrile) (AIBN) as described earlier [9]. The weight average molecular weights -M w , of the investigated samples were measured by size exclusion chromatography (SEC) equipped with light scattering detection system (laser wavelength equal 632.8 nm).…”

Section: Methodsmentioning

confidence: 99%

“…In the case of statistical copolymers, the random distribution of the comonomers in the main chain prevents their macro phase separation yielding the dynamics of a single glass transition. However in the case of more incompatible systems such as random copolymers with hydrophilic and hydrophobic groups, a micellar-like microphase structure is possible, in the suitable composition range [8,9]. In the random copolymer bulk films of two miscible hydrophobic comonomers such as methyl methacrylate (MMA) with butyl methacrylate (n-BMA) and MMA with benzyl methacrylate (BzMA), a nanoscopic aggregation has been first suggested by structural relaxation measurements in photochemical hole burning spectroscopy [10].…”

Section: Introductionmentioning

confidence: 98%

“…In the immiscible or partially miscible homopolymer blends a phase separated structure exhibits either two glass transitions temperatures (T g ) or one broader glass transition phenomenon, reflecting their heterogeneity on the molecular level. The morphology of a system exhibiting microphase separation or nanoscale aggregates can be revealed by fluorescence microspectroscopy, scanning electron or transmission electron microscopies, atomic force microscopy, as well as by the scattering methods [5][6][7][8][9].…”

Section: Introductionmentioning

confidence: 99%

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Structural changes on nanometric level in copolymers of methyl methacrylate with benzyl methacrylate as investigated by low frequency Raman scattering and small angle X-ray scattering

Wypych¹,

Duval²,

Boiteux³

et al. 2006

Journal of Non-Crystalline Solids

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“…[ 167 ] The generic term "tri-BCP" is used in parts below for simplicity to refer to block polymers composed of three polymer blocks (A-B-A or A-B-C). Note that the terms tri-BCP and tri-BTP are often used interchangeably in the literature.…”

Section: Triblock Copolymers and Inorganic Incorporationmentioning

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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The micellar behavior of linear triblock terpolymers of styrene (S), isoprene (I), and methyl methacrylate (MMA) in selective solvents for PS and PMMA

Cited by 15 publications

References 34 publications

Precise hierarchical self-assembly of multicompartment micelles

Precise hierarchical self-assembly of multicompartment micelles

Structural changes on nanometric level in copolymers of methyl methacrylate with benzyl methacrylate as investigated by low frequency Raman scattering and small angle X-ray scattering

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

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