https://scholars.lib.ntu.edu.tw/handle/123456789/631299
標題: | Investigating the Mobility−Compressibility Properties of Conjugated Polymers by the Contact Film Transfer Method with Prestrain | 作者: | Sung, Chih Yuan Lin, Chia Yu CHU-CHEN CHUEH Lin, Yan Cheng WEN-CHANG CHEN |
關鍵字: | asymmetric side chains | buckling | compressive strains | field-effect transistors | semiconducting polymers | 公開日期: | 1-一月-2023 | 出版社: | WILEY-V C H VERLAG GMBH | 來源出版物: | Macromolecular Rapid Communications | 摘要: | Up to now, researches on the mobility–stretchability of semiconducting polymers are extensively investigated, but little attention was paid to their morphology and field-effect transistor characteristics under compressive strains, which is equally crucial in wearable electronic applications. In this work, a contact film transfer method is applied to evaluate the mobility–compressibility properties of conjugated polymers. A series of isoindigo–bithiophene conjugated polymers with symmetric carbosilane side chains (P(Si-Si)), siloxane-terminated alkyl side chains (P(SiO-SiO)), and combined asymmetric side chains (P(SiO-Si)) are investigated. Accordingly, a compressed elastomer slab is used to transfer and compress the polymer films by releasing prestrain, and the morphology and mobility evolutions of these polymers are tracked. It is found that P(SiO-Si) outperforms the other symmetric polymers including P(Si─Si) and P(SiO─SiO), having the ability to dissipate strain with its shortened lamellar spacing and orthogonal chain alignment. Notably, the mechanical durability of P(SiO-Si) is also enhanced after consecutive compress–release cycles. In addition, the contact film transfer technique is demonstrated to be applicable to investigate the compressibility of different semiconducting polymers. These results demonstrate a comprehensive approach to understand the mobility–compressibility properties of semiconducting polymers under tensile and compressive strains. |
URI: | https://scholars.lib.ntu.edu.tw/handle/123456789/631299 | ISSN: | 10221336 | DOI: | 10.1002/marc.202300058 |
顯示於: | 化學工程學系 |
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