Dzienia Andrzej, Just Dominik, Taborowska Patrycja, Mielanczyk Anna, Milowska Karolina Z, Yorozuya Shunji, Naka Sadahito, Shiraki Tomohiro, Janas Dawid
Department of Chemistry, Silesian University of Technology, B. Krzywoustego 4, Gliwice, 44-100, Poland.
Institute of Materials Engineering, University of Silesia in Katowice, Bankowa 12, Katowice, 40-007, Poland.
Small. 2023 Nov;19(46):e2304211. doi: 10.1002/smll.202304211. Epub 2023 Jul 19.
The inability to purify nanomaterials such as single-walled carbon nanotubes (SWCNTs) to the desired extent hampers the progress in nanoscience. Various SWCNT types can be purified by extraction, but it is challenging to establish conditions giving rise to the isolation of high-purity fractions. The problem stems from the fact that common organic solvents or water cannot provide an optimal environment for purification. Consequently, one must often decide between the separation yield and purity of the product. This article reports how through the self-synthesis of poly(9,9-dioctylfluorene-alt-benzothiadiazole) with tailored characteristics, in-depth elucidation of the extraction process, and mixed-solvent engineering, a high-yield isolation of monochiral (7,3) SWCNTs is developed. The combination of toluene and tetralin affords a separation medium of unique properties, wherein both high yield and exceptional purity can be attained simultaneously. The reported results pave the way for further research on this rare chirality, which, as illustrated herein, is much more reactive than any of the previously separated SWCNTs.
无法将单壁碳纳米管（SWCNT）等纳米材料纯化到所需程度阻碍了纳米科学的发展。各种类型的SWCNT可通过萃取进行纯化，但要建立能够分离出高纯度组分的条件具有挑战性。问题源于常见的有机溶剂或水无法为纯化提供最佳环境。因此，人们常常必须在产物的分离产率和纯度之间做出抉择。本文报道了如何通过自合成具有定制特性的聚（9,9 - 二辛基芴 - 交替 - 苯并噻二唑）、深入阐明萃取过程以及混合溶剂工程，实现了单手性（7,3）SWCNT的高产率分离。甲苯和四氢萘的组合提供了一种具有独特性质的分离介质，在其中可以同时实现高产率和极高的纯度。所报道的结果为对这种罕见手性的进一步研究铺平了道路，如本文所示，这种手性比任何先前分离的SWCNT都更具反应性。
