Comparative study of the extraction selectivity of PFO-BPy and PCz for small to large diameter single-walled carbon nanotubes
作者机构：Center for Carbon-Based ElectronicsPeking UniversityBeijing 100871China Key Laboratory for the Physics and Chemistry of NanodevicesSchool of ElectronicsPeking UniversityBeijing 100871China Shanxi Institute for Carbon-Based Thin Film ElectronicsPeking University(SICTFE-PKU)Taiyuan 030012China Taiyuan Laboratory for Carbon-Based Thin Film ElectronicsTaiyuan 030012China
出 版 物：《Nano Research》 (纳米研究（英文版）)
年 卷 期：2022年第15卷第9期
页 面：8479-8485页
核心收录：
学科分类：07[理学] 070303[理学-有机化学] 0805[工学-材料科学与工程（可授工学、理学学位）] 0703[理学-化学]
基 金：the National Natural Science Foundation of China(Nos.U21A6004 and 51991341) Science and Technology Major Project of Shanxi(No.202101030201022) Young Talents Program of Beijing(No.2018000020028G349)。
主 题：carbon nanotube polymer wrapping poly[(9 9-dioctylfluorenyl-2 7-diyl)-alt-co-(6 6′-{2 2′-bipyridine})](PFO-BPy) poly[9-(1-octylonoyl)-9H-carbazole-2 7-diyl](PCz) chiral selectivity
摘 要：Semiconducting single-walled carbon nanotubes(s-SWCNTs)are fascinating materials for future electronic and optical applications.Conjugated polymer wrapping is one of the most promising methods for mass production of high purity s-SWCNTs.However,its chiral selectivity is relatively inferior to other s-SWCNT production methods.In this paper,the chiral selectivity of two polymers,poly[(9,9-dioctylfluorenyl-2,7-diyl)-alt-co-(6,6′-{2,2′-bipyridine})](PFO-BPy)and poly[9-(1-octylonoyl)-9H-carbazole-2,7-diyl](PCz),which are representatives of widely used polyfluorene and polycarbazole families,respectively,were comparatively studied.Both polymers exhibited high selectivity for a subset of existing chiral species in each of the commercially available raw SWCNT materials(CoMoCAT,HiPco,and arc-discharge)which cover a diameter range of 0.6–1.8 nm.Less chiral species were selected by PFO-BPy from small diameter(1.2 nm)raw materials.High chiral purity(6,5)(99%)and(7,5)(75%)solutions were extracted by PFO-BPy and PCz from CoMoCAT materials,respectively.The different chiral angle and diameter selections for different raw materials by both polymers were ascribed to their different geometrical structures and related polymer-tube interactions.Our work provides indispensable information for better understanding the mechanism of polymer wrapping method and improving extraction of single chirality sSWCNTs.
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