En route to single-step, two-phase purification of carbon nanotubes facilitated by high-throughput spectroscopy.
En route to single-step, two-phase purification of carbon nanotubes facilitated by high-throughput spectroscopy.
复制标题
DOI：
10.1038/s41598-021-89839-4
复制
发表时间：
2021-05-19
影响因子：
4.6
通讯作者：
Janas D
中科院分区：
文献类型：
--
作者：
Podlesny B;Olszewska B;Yaari Z;Jena PV;Ghahramani G;Feiner R;Heller DA;Janas D
单壁碳纳米管（SWCNT）的手性纯化对于许多领域的应用来说是理想的，但目前其通用性因通量低而受到阻碍。我们发现了一种通过水相两相萃取 (ATPE) 方法一步富集单手性 SWCNT 的方法。为了达到适当的分辨率，非离子三嵌段共聚物表面活性剂的双相系统随离子表面活性剂而变化。然后可以从顶部相收获近单手性的单壁碳纳米管部分。我们还发现，通过高通量、近红外激发发射光致发光光谱，可以映射 ATPE 的参数空间来探测分离过程的机理。最后，我们发现优化的条件也可用于对单链 DNA 包裹的单壁碳纳米管进行分选。消除表面活性剂交换的需要和分离过程的简单性使得该方法有望高产地生成纯化的单手性 SWCNT 制剂。
Chirality purification of single-walled carbon nanotubes (SWCNTs) is desirable for applications in many fields, but general utility is currently hampered by low throughput. We discovered a method to obtain single-chirality SWCNT enrichment by the aqueous two-phase extraction (ATPE) method in a single step. To achieve appropriate resolution, a biphasic system of non-ionic tri-block copolymer surfactant is varied with an ionic surfactant. A nearly-monochiral fraction of SWCNTs can then be harvested from the top phase. We also found, via high-throughput, near-infrared excitation-emission photoluminescence spectroscopy, that the parameter space of ATPE can be mapped to probe the mechanics of the separation process. Finally, we found that optimized conditions can be used for sorting of SWCNTs wrapped with ssDNA as well. Elimination of the need for surfactant exchange and simplicity of the separation process make the approach promising for high-yield generation of purified single-chirality SWCNT preparations.
登录
查看更多内容
影响因子：
8.9
作者：
Harvey JD;Baker HA;Ortiz MV;Kentsis A;Heller DA
通讯作者：
Heller DA
影响因子：
16.6
作者：
Lee, Hang Woo;Yoon, Yeohoon;Bao, Zhenan
通讯作者：
Bao, Zhenan
影响因子：
10.8
作者：
Gui, Hui;Streit, Jason K.;Zheng, Ming
通讯作者：
Zheng, Ming
影响因子：
17.1
作者：
Li, Han;Gordeev, Georgy;Flavel, Benjamin S.
通讯作者：
Flavel, Benjamin S.
影响因子：
17.1
作者：
Galassi TV;Jena PV;Shah J;Ao G;Molitor E;Bram Y;Frankel A;Park J;Jessurun J;Ory DS;Haimovitz-Friedman A;Roxbury D;Mittal J;Zheng M;Schwartz RE;Heller DA
通讯作者：
Heller DA