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Strategy for Enhancing Ultrahigh-Molecular-Weight Block Copolymer Chain Mobility to Access Large Period Sizes (>100 nm)
Langmuir ( IF 3.9 ) Pub Date : 2020-11-11 , DOI: 10.1021/acs.langmuir.0c02261 Cian Cummins 1, 2 , Alberto Alvarez-Fernandez 3 , Ahmed Bentaleb 1 , Georges Hadziioannou 2 , Virginie Ponsinet 1 , Guillaume Fleury 2
Langmuir ( IF 3.9 ) Pub Date : 2020-11-11 , DOI: 10.1021/acs.langmuir.0c02261 Cian Cummins 1, 2 , Alberto Alvarez-Fernandez 3 , Ahmed Bentaleb 1 , Georges Hadziioannou 2 , Virginie Ponsinet 1 , Guillaume Fleury 2
Affiliation
Assembling ultrahigh-molecular-weight (UHMW) block copolymers (BCPs) in rapid time scales is perceived as a grand challenge in polymer science due to slow kinetics. Through surface engineering and identifying a nonvolatile solvent (propylene glycol methyl ether acetate, PGMEA), we showcase the impressive ability of a series of lamellar poly(styrene)-block-poly(2-vinylpyridine) (PS-b-P2VP) BCPs to self-assemble directly after spin-coating. In particular, we show the formation of large-period (≈111 nm) lamellar structures from a neat UHMW PS-b-P2VP BCP. The significant influence of solvent–polymer solubility parameters are explored to enhance the polymer chain mobility. After optimization using solvent vapor annealing, increased feature order of ultralarge-period PS-b-P2VP BCP patterns in 1 h is achieved. Isolated metallic and dielectric features are also demonstrated to exemplify the promise that large BCP periods offer for functional applications. The methods described in this article center on industry-compatible patterning schemes, solvents, and deposition techniques. Thus, our straightforward UHMW BCP strategy potentially paves a viable and practical path forward for large-scale integration in various sectors, e.g., photonic band gaps, polarizers, and membranes that demand ultralarge period sizes.
中文翻译:
增强超高分子量嵌段共聚物链移动性以获取较大周期尺寸(> 100 nm)的策略
由于动力学缓慢,在快速的时间范围内组装超高分子量(UHMW)嵌段共聚物(BCP)被认为是聚合物科学中的一大挑战。通过表面工程和鉴定非挥发性溶剂(丙二醇甲醚乙酸酯,PGMEA),我们展示了一系列层状聚(苯乙烯)的令人印象深刻的能力-嵌段-聚(2-乙烯基吡啶)(PS- b -P2VP)过境点到旋涂后直接自组装。特别是,我们显示了由纯净的UHMW PS- b形成大周期(≈111nm)的层状结构-P2VP BCP。探索了溶剂-聚合物溶解度参数的显着影响,以提高聚合物链的流动性。使用溶剂蒸汽退火进行优化后,可以在1小时内增加超大周期PS- b -P2VP BCP图案的特征顺序。还证明了隔离的金属和介电特征可证明大BCP周期为功能应用提供的希望。本文中描述的方法集中在行业兼容的图案化方案,溶剂和沉积技术上。因此,我们直接的UHMW BCP策略潜在地为在各个领域进行大规模集成铺平了可行的实用途径,例如光子带隙,偏振器和需要超大周期尺寸的膜。
更新日期:2020-11-25
中文翻译:
增强超高分子量嵌段共聚物链移动性以获取较大周期尺寸(> 100 nm)的策略
由于动力学缓慢,在快速的时间范围内组装超高分子量(UHMW)嵌段共聚物(BCP)被认为是聚合物科学中的一大挑战。通过表面工程和鉴定非挥发性溶剂(丙二醇甲醚乙酸酯,PGMEA),我们展示了一系列层状聚(苯乙烯)的令人印象深刻的能力-嵌段-聚(2-乙烯基吡啶)(PS- b -P2VP)过境点到旋涂后直接自组装。特别是,我们显示了由纯净的UHMW PS- b形成大周期(≈111nm)的层状结构-P2VP BCP。探索了溶剂-聚合物溶解度参数的显着影响,以提高聚合物链的流动性。使用溶剂蒸汽退火进行优化后,可以在1小时内增加超大周期PS- b -P2VP BCP图案的特征顺序。还证明了隔离的金属和介电特征可证明大BCP周期为功能应用提供的希望。本文中描述的方法集中在行业兼容的图案化方案,溶剂和沉积技术上。因此,我们直接的UHMW BCP策略潜在地为在各个领域进行大规模集成铺平了可行的实用途径,例如光子带隙,偏振器和需要超大周期尺寸的膜。