Conjugated polymer sorting is recognized as an efficient and scalable method for the selective extraction of semiconducting single‐walled carbon nanotubes (s‐SWCNTs). However, this process typically requires the use of nonpolar and aromatic solvents as the dispersion medium, which are petroleum‐based and carry significant production hazards. Moreover, there is still potential for improving the efficiency of batch purification. Here, this study presents fluorene‐based conjugated polymer that integrates diamines containing ethylene glycol chains (ODA) as linkers within the main chain, to effectively extract s‐SWCNTs in bio‐renewable solvents. The introduction of ODA segments enhances the solubility in bio‐renewable solvents, facilitating effective wrapping of s‐SWCNTs in polar environments. Additionally, the ODA within the main chain enhances affinity to s‐SWCNTs, thereby contributing to increased yields and purity. The polymer achieves a high sorting yield of 55% and a purity of 99.6% in dispersion of s‐SWCNTs in 2‐Methyltetrahydrofuran. Thin‐film transistor arrays fabricated with sorted s‐SWCNTs solution through slot‐die coating exhibit average charge carrier mobilities of 20–23 cm2 V⁻¹ s⁻¹ and high on/off current ratios exceeding 105 together with high spatial uniformity. This study highlights the viability of bio‐renewable solvents in the sorting process, paving the way for the eco‐friendly approach to the purification of SWCNTs.

中文翻译：

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通过共轭聚合物的主链工程对生物可再生溶剂中的半导体单壁碳纳米管进行有效分选


共轭聚合物分选被认为是选择性提取半导体单壁碳纳米管（s-SWCNT）的有效且可扩展的方法。然而，该过程通常需要使用非极性和芳香族溶剂作为分散介质，这些溶剂是石油基的，具有显着的生产危险。此外，批量纯化效率仍有提高的潜力。在此，本研究提出了基于芴的共轭聚合物，该聚合物将含有乙二醇链（ODA）的二胺作为连接体集成在主链内，以有效地在生物可再生溶剂中提取s-SWCNT。 ODA 片段的引入增强了在生物可再生溶剂中的溶解度，促进 s-SWCNT 在极性环境中的有效包裹。此外，主链内的 ODA 增强了对 s-SWCNT 的亲和力，从而有助于提高产量和纯度。该聚合物在 2-甲基四氢呋喃中的 s-SWCNT 分散体中实现了 55% 的高分选率和 99.6% 的纯度。使用排序的 s-SWCNT 溶液通过缝模涂层制造的薄膜晶体管阵列表现出 20-23 cm2 V-1 s-1 的平均载流子迁移率、超过 105 的高开/关电流比以及高空间均匀性。这项研究强调了生物可再生溶剂在分选过程中的可行性，为环保的单壁碳纳米管纯化方法铺平了道路。