The conjugated polymer wrapping method has been developed to sort semiconducting single-walled carbon nanotubes (sc-SWNTs). However, the method has rarely been applied in sorting nearly single-chiral SWNTs with large diameter despite the necessity of separating sc-SWNT with homogeneous optoelectrical characteristics for high-performance devices. In this study, nearly single-chiral sc-SWNTs with a 1.3 nm diameter are sorted via only conjugated polymer wrapping method using poly (9,9-dioctylfluorenyl-2,7-diyl) (PFO) in tetralin, without additional process. The PFO backbone chain is extended with a torsion angle of 180° in tetralin owing to strong intermolecular forces from the viscous solvent. Consequently, the backbone planarization of PFO enables the sorting of SWNTs of specific chirality. The phase of the wrapping polymer results in an enhanced chiral selectivity, with over 70 % of the sorted SWNTs in tetralin having a chirality of (10,9). These findings clarify the relationship between the conformation and chiral selectivity of the wrapping polymer in the conjugated polymer wrapping method and contribute to the development of highly uniform SWNT-based devices, which require single-chiral SWNTs with homogeneous optoelectrical characteristics.

中文翻译：

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通过聚二辛基芴主链平坦化对直径为 1.3 nm 的 (10,9) 手性碳纳米管进行一步分选

共轭聚合物包裹方法已被开发用于对半导体单壁碳纳米管（sc-SWNT）进行分类。然而，尽管高性能器件需要分离具有均匀光电特性的 sc-SWNT，但该方法很少应用于大直径的近单手性 SWNT 的分选。在这项研究中，仅通过使用四氢化萘中的聚（9,9-二辛基芴基-2,7-二基）（PFO）的共轭聚合物包裹方法对直径为 1.3 nm 的近单手性 sc-SWNT 进行分类，无需额外处理。由于粘性溶剂的强大分子间力，PFO 主链在四氢化萘中以 180° 的扭转角延伸。因此，PFO 的主干平面化使得能够对具有特定手性的 SWNT 进行分类。包裹聚合物的相导致手性选择性增强，四氢化萘中超过 70% 的分选 SWNT 手性为 (10,9)。这些发现阐明了共轭聚合物包裹方法中包裹聚合物的构象和手性选择性之间的关系，并有助于开发高度均匀的基于SWNT的器件，这需要具有均匀光电特性的单手性SWNT。