Reversible and tunable morphologies of amphiphilic block copolymer nanorods confined in nanopores: Roles of annealing solvents

Tseng, Yu Hsuan; Lin, Yuh-Lang; Ho, Jhih Hao; Chang, Chun Ting; Fan, Yi; Shen, Ming–Yuan; Chen, Jiun‐Tai

doi:10.1016/j.polymer.2021.123859

Cited by 7 publications

(5 citation statements)

References 37 publications

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“…Figure f shows the plots of the corresponding ionic resistance and ionic conductivity of the SEO-LiTFSI@AAO composite electrolytes, and the values are summarized in Table S3. It should be noted that we are unable to characterize the internal structures during the EIS measurements; nevertheless, our previous study has demonstrated the cycle test of the solvent annealing process, revealing the observable structural transition between the helical and cylindrical configurations …”

Section: Resultsmentioning

confidence: 89%

“…Second, the self-assembly of SEO is further controlled by annealing in THF/MeOH solvent vapors, specifically targeting the formation of cylindrical ion-transport nanochannels to promote ion transport efficiency. The solvent composition is chosen according to our previous study . These cylindrical PEO nanochannels are expected to significantly enhance the efficiency of ion transport for lithium salts, as illustrated in Figure b.…”

Section: Resultsmentioning

confidence: 99%

“…Ceramic anodic aluminum oxide (AAO) templates are incorporated in the block copolymer composite electrolytes to promote the formation of well-ordered vertically aligned self-assembled structures of SEO. Compared with the bulk environment, the geometric and energy confinement effects imposed by the AAO templates provide SEO with greater potential for various self-assembly structures. − These intriguing structures of SEO are expected to enable the creation of tailored ion transport nanochannels for lithium salts within the block copolymer materials.…”

Section: Introductionmentioning

confidence: 99%

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Solvent-Tailored Reversible Self-Assembly: Unveiling Ionic Transport Nanochannels in Block Copolymer Composite Electrolytes

Tseng,

Liao,

Lin

et al. 2023

ACS Appl. Mater. Interfaces

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Block copolymer composite electrolytes have gained extensive attention for their promising performance in ionic conductivity and mechanical properties, making them valuable for future technologies. The control of the ionic conductivity through the self-assembly of block copolymers, however, remains a great challenge, especially in confined environments. In this study, we prepare block copolymer composite electrolytes using polystyrene-block-poly(ethylene oxide) (PS-b-PEO, SEO) as the polymer matrix and anodic aluminum oxide (AAO) templates as the ceramic skeleton. The self-assembly of SEO creates nanoscale ion transport pathways in the PEO regions through ionic interactions with lithium salts. The nanopores of the AAO templates provide a confined environment for complex phase separation of SEO controlled by selective solvent vapor annealing. Our findings demonstrate that transforming selfassembled SEO structures allows for precise control of ion transport pathways with cylindrical structures exhibiting 20 times higher ionic conductivities than those of helical structures. For AAO

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Section: Resultsmentioning

confidence: 89%

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Solvent-Tailored Reversible Self-Assembly: Unveiling Ionic Transport Nanochannels in Block Copolymer Composite Electrolytes

Tseng,

Liao,

Lin

et al. 2023

ACS Appl. Mater. Interfaces

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“…238,239 An interplay between surface wetting effects and selective swelling of amphiphilic BCP domains in the binary mixture of two solvent vapors has been exploited to tune the morphology of PS- b -PEO diblock confined in porous template. 240 More information on the formation of 3D polymer structures, especially in anodic aluminum oxide (AAO) templates, can be found in the recent comprehensive review by Ok et al 241…”

Section: Review Of Solvent-assisted Self-assembly Of Bcp Filmsmentioning

confidence: 99%

Solvent-assisted self-assembly of block copolymer thin films

2022

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“…During the self-assembly process via solvent vapor annealing (SVA), the solvents are found to have a significant influence. For a given polymer system, the choice of different solvents can result in different nanostructures [ 63 , 64 , 65 ]. Peng et al [ 66 ] investigated the effect of SVA on the morphology of poly(styrene)-b- poly (ethylene oxide) (PS-b-PEO).…”

Section: Regulation Of the Self-assembled Structure Of The Block Copo...mentioning

confidence: 99%

Well-Defined Nanostructures by Block Copolymers and Mass Transport Applications in Energy Conversion

Hou

Hao

et al. 2022

Polymers

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With the speedy progress in the research of nanomaterials, self-assembly technology has captured the high-profile interest of researchers because of its simplicity and ease of spontaneous formation of a stable ordered aggregation system. The self-assembly of block copolymers can be precisely regulated at the nanoscale to overcome the physical limits of conventional processing techniques. This bottom-up assembly strategy is simple, easy to control, and associated with high density and high order, which is of great significance for mass transportation through membrane materials. In this review, to investigate the regulation of block copolymer self-assembly structures, we systematically explored the factors that affect the self-assembly nanostructure. After discussing the formation of nanostructures of diverse block copolymers, this review highlights block copolymer-based mass transport membranes, which play the role of “energy enhancers” in concentration cells, fuel cells, and rechargeable batteries. We firmly believe that the introduction of block copolymers can facilitate the novel energy conversion to an entirely new plateau, and the research can inform a new generation of block copolymers for more promotion and improvement in new energy applications.

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Reversible and tunable morphologies of amphiphilic block copolymer nanorods confined in nanopores: Roles of annealing solvents

Cited by 7 publications

References 37 publications

Solvent-Tailored Reversible Self-Assembly: Unveiling Ionic Transport Nanochannels in Block Copolymer Composite Electrolytes

Solvent-Tailored Reversible Self-Assembly: Unveiling Ionic Transport Nanochannels in Block Copolymer Composite Electrolytes

Solvent-assisted self-assembly of block copolymer thin films

Well-Defined Nanostructures by Block Copolymers and Mass Transport Applications in Energy Conversion

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