Isolation of the (6,5) single-wall carbon nanotube enantiomers by surfactant-assisted aqueous two-phase extraction

被引：18
|
作者：
Li, Han [1 ]
Sims, Christopher M. [2 ]
Kang, Rui [1 ]
Biedermann, Frank [1 ]
Fagan, Jeffrey A. [2 ]
Flavel, Benjamin S. [1 ]
机构：
[1] Karlsruhe Inst Technol, Inst Nanotechnol, Hermann Von Helmholtz Pl 1, D-76344 Eggenstein Leopoldshafen, Germany
[2] Natl Inst Stand & Technol, Mat Sci & Engn Div, Gaithersburg, MD 20899 USA
来源：
CARBON | 2023年 / 204卷
关键词：
SWCNT; Aqueous two-phase extraction; Enantiomer separation; Analytical ultracentrifugation; Partition coefficient change condition; DENSITY-GRADIENT; SEDIMENTATION-VELOCITY; ULTRACENTRIFUGATION; HANDEDNESS; CHIRALITY; SALT; FLUORESCENCE; SIZE;
D O I：
10.1016/j.carbon.2022.12.071
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
Sorting single-chirality enantiomers is the ultimate goal for single-wall carbon nanotube (SWCNT) separation. In this work, aqueous two-phase extraction (ATPE) is used to obtain highly purified (>80%) left- and right-handed (6,5) SWCNTs with limited experimental steps. The optimized surfactant conditions are presented, and analytical ultracentrifugation (AUC) and near-infrared photoluminescence (PL) measurements are used to examine the surfactant wrapping and partition coefficient change conditions (PCCCs) required for separation. Our study provides valuable insights into the underlying mechanisms behind surfactant-assisted SWCNT separations and facilitates the use of SWCNT enantiomers in fundamental studies and applications in the future.
引用
收藏
页码：475 / 483
页数：9
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