Designing high χ copolymer materials for nanotechnology applications: A systematic bulk vs. thin films approach

Angelopoulou, Polyxeni P.; Moutsios, Ioannis; Manesi, Gkreti-Maria; Ivanov, Dimitri A.; Σακελλαρίου, Γεώργιος; Avgeropoulos, Apostolos

doi:10.1016/j.progpolymsci.2022.101625

Cited by 16 publications

(19 citation statements)

References 411 publications

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“…Typically, the use of BCPs with high-c and low N is a common strategy to achieve this goal. [13][14][15] Much work has been done on material design of high-c block copolymers. Some indicative high-c systems that have yielded ultra-small feature sizes are poly(styrene)-block-poly(glycerol monomethacrylate) (PS-b-PGM), 16,17 poly(cyclohexylethylene)-blockpoly(methyl methacrylate) (PCHE-b-PMMA), 18 poly(dimethylsiloxane)-block-poly(D,L-lactide) (PDMS-b-PLA) 19,20 and poly(4-trimethylsilylstyrene)-block-poly(D,L-lactide) (PTMSS-b-PLA).…”

Section: Introductionmentioning

confidence: 99%

High-χdiblock copolymers containing poly(vinylpyridine-N-oxide) segments

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Section: Introductionmentioning

confidence: 99%

High-χdiblock copolymers containing poly(vinylpyridine-N-oxide) segments

et al. 2023

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“…The ability of polymers to self-assemble in bulk or thin films using solvents with different selectivity enables the formation of various well-defined morphologies at the nanoscale. This fundamental characteristic is of major importance, leading to their possible utilization in nano-lithographic applications as reported in the literature [ 1 , 2 , 3 ].…”

Section: Introductionmentioning

confidence: 99%

“…To overcome this limitation, several strategies have been employed, such as the use of homopolymer brushes (hydroxyl-terminated PS and/or PDMS), pre-patterned surfaces, solvent annealing, etc. [ 1 , 37 , 38 , 39 , 40 , 41 ].…”

Section: Introductionmentioning

confidence: 99%

Thermal and Bulk Properties of Triblock Terpolymers and Modified Derivatives towards Novel Polymer Brushes

et al. 2023

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We report the synthesis of three (3) linear triblock terpolymers, two (2) of the ABC type and one (1) of the BAC type, where A, B and C correspond to three chemically incompatible blocks such as polystyrene (PS), poly(butadiene) of exclusively (~100% vinyl-type) -1,2 microstructure (PB1,2) and poly(dimethylsiloxane) (PDMS) respectively. Living anionic polymerization enabled the synthesis of narrowly dispersed terpolymers with low average molecular weights and different composition ratios, as verified by multiple molecular characterization techniques. To evaluate their self-assembly behavior, transmission electron microscopy and small-angle X-ray scattering experiments were conducted, indicating the effect of asymmetric compositions and interactions as well as inversed segment sequence on the adopted morphologies. Furthermore, post-polymerization chemical modification reactions such as hydroboration and oxidation were carried out on the extremely low molecular weight PB1,2 in all three terpolymer samples. To justify the successful incorporation of –OH groups in the polydiene segments and the preparation of polymeric brushes, various molecular, thermal, and surface analysis measurements were carried out. The synthesis and chemical modification reactions on such triblock terpolymers are performed for the first time to the best of our knowledge and constitute a promising route to design polymers for nanotechnology applications.

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“…For more than three decades, microphase separation in linear diblock copolymers has been thoroughly studied. − Nowadays, the main scientific discussion involves the self-assembly of diblock copolymers as well as their strong dependence on χ N and φ values (where χ indicates the immiscibility between blocks, N corresponds to the total degree of polymerization, and φ is the volume fraction). − Due to their unique properties and their ability to spontaneously self-assemble, without employing any external stimuli, diblock copolymers have been used in a vast number of nanotechnology applications, such as thin films, − nanolithography masks, − flexible nanostructures, , wearable technologies, etc. , …”

Section: Introductionmentioning

confidence: 99%

“…Numerous scientific groups have made extensive efforts to efficiently elaborate the origins of microphase separation on diblock copolymers and have utilized different strategies to obtain various morphologies. , To date, four major equilibrium morphologies have been obtained from diblock copolymers such as spheres, cylinders, double gyroid, and lamellae. ,,, …”

Section: Introductionmentioning

confidence: 99%

Defining Morphological Transformations of “Soft Nature” Diblock Viscoelastic Structured Polymers

et al. 2023

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Structured diblock copolymer liquids consisting exclusively of "soft" segments with glass-transition temperatures well below room temperature have not been studied extensively in the literature in terms of self-assembly properties to date. Despite their "soft nature", these types of diblock copolymers are capable of forming well-ordered topologies at low temperatures. This ability is attributed to their low dispersity indices (Đ) and relatively high Flory−Huggins interaction parameter, χ, between the chemically different involved blocks. Herein, we report a comprehensive study of the synthesized copolymers on molecular and thermal characterization, along with the structure−property relationship of two types of polydiene-b-polysiloxane copolymers by manipulating the monomer's ratio during synthesis. Emphasis was given to the self-assembly behavior when the molecular characteristics (volume fraction and degree of polymerization) of the involved blocks varied to assess the limits of the phase stability. Specially, poly(butadiene) (PB 1,2 ) or poly(isoprene) (PI 1,4 ) was utilized as the first segment, while poly(dimethylsiloxane) (PDMS) was used as the second block in all cases. The molecular characteristics' diversity combined with the ability to design/synthesize block copolymers with well-ordered phases ranging from spheres, cylinders, lamellar, and finally network structures is quite promising for nanotechnology applications in soft electronics. Also, the inherent properties of the copolymers, such as thermal stability, hydrophobicity, and flexibility, render them potential candidates for stretchable and/or wearable applications.

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Designing high χ copolymer materials for nanotechnology applications: A systematic bulk vs. thin films approach

Cited by 16 publications

References 411 publications

High-χdiblock copolymers containing poly(vinylpyridine-N-oxide) segments

High-χdiblock copolymers containing poly(vinylpyridine-N-oxide) segments

Thermal and Bulk Properties of Triblock Terpolymers and Modified Derivatives towards Novel Polymer Brushes

Defining Morphological Transformations of “Soft Nature” Diblock Viscoelastic Structured Polymers

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