Large-scale single-chirality separation of single-wall carbon nanotubes by simple gel chromatography.
Large-scale single-chirality separation of single-wall carbon nanotubes by simple gel chromatography.
复制标题
DOI：
10.1038/ncomms1313
复制
发表时间：
2011
影响因子：
16.6
通讯作者：
Kataura, Hiromichi
中科院分区：
文献类型：
--
作者：
Liu, Huaping;Nishide, Daisuke;Tanaka, Takeshi;Kataura, Hiromichi
单结构单壁碳纳米管在科学研究以及电子和生物医学应用中都具有重要意义；然而，将单壁碳纳米管整体分离成多个单手性纳米管仍然具有挑战性。在这里，我们报道了一种简单而有效的方法，利用一种表面活性剂和一系列垂直连接的凝胶柱，使用单一表面活性剂多柱凝胶层析法大规模分离SWCNT。这种方法是基于单壁碳纳米管与烯丙基葡聚糖凝胶的相互作用强度依赖于结构。在顶部柱上超载SWCNT分散体会导致柱上的吸附位置被与凝胶表现出最强相互作用的纳米管完全占据。未结合的纳米管流经下一柱，与凝胶相互作用第二强的纳米管在此阶段被吸附。用这种方法分离了13个不同的(n，m)种。金属单壁碳纳米管最终被收集为无结合纳米管，因为它们与凝胶的相互作用最小。大规模地将单壁碳纳米管分离成具有单一手性的群体是纳米管实际应用中的一个重大挑战。目前，利用多柱凝胶层析技术，实现了对13种不同种类碳纳米管的大规模分离。
Monostructured single-wall carbon nanotubes (SWCNTs) are important in both scientific research and electronic and biomedical applications; however, the bulk separation of SWCNTs into populations of single-chirality nanotubes remains challenging. Here we report a simple and effective method for the large-scale chirality separation of SWCNTs using a single-surfactant multicolumn gel chromatography method utilizing one surfactant and a series of vertically connected gel columns. This method is based on the structure-dependent interaction strength of SWCNTs with an allyl dextran-based gel. Overloading an SWCNT dispersion on the top column results in the adsorption sites of the column becoming fully occupied by the nanotubes that exhibit the strongest interaction with the gel. The unbound nanotubes flow through to the next column, and the nanotubes with the second strongest interaction with the gel are adsorbed in this stage. In this manner, 13 different (n, m) species were separated. Metallic SWCNTs were finally collected as unbound nanotubes because they exhibited the lowest interaction with the gel. Large-scale separation of single-wall carbon nanotubes into populations of single chirality is a significant challenge in the practical application of nanotubes. Now, using multicolumn gel chromatography, the large-scale separation of 13 different carbon nanotube species is achieved.
登录
查看更多内容
影响因子：
2.8
作者：
Nikolaev, P;Bronikowski, MJ;Smalley, RE
通讯作者：
Smalley, RE
影响因子：
38.3
作者：
Ghosh, Saunab;Bachilo, Sergei M.;Weisman, R. Bruce
通讯作者：
Weisman, R. Bruce
影响因子：
3.7
作者：
Miyata, Yasumitsu;Kawai, Takazumi;Kataura, Hiromichi
通讯作者：
Kataura, Hiromichi
影响因子：
3.7
作者：
Takagi, Yoshiteru;Okada, Susumu
通讯作者：
Okada, Susumu
影响因子：
17.1
作者：
Tummala, Naga Rajesh;Striolo, Alberto
通讯作者：
Striolo, Alberto