Journal
CARBON
Volume 204, Issue -, Pages 475-483Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.carbon.2022.12.071
Keywords
SWCNT; Aqueous two-phase extraction; Enantiomer separation; Analytical ultracentrifugation; Partition coefficient change condition
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In this study, highly purified (>80%) left- and right-handed (6,5) single-wall carbon nanotubes (SWCNTs) were separated using aqueous two-phase extraction (ATPE), with limited experimental steps. The optimized surfactant conditions were determined, and analytical ultracentrifugation (AUC) and near-infrared photoluminescence (PL) measurements were used to examine the required conditions for surfactant wrapping and partition coefficient change (PCCCs). This study provides valuable insights into the underlying mechanisms behind surfactant-assisted SWCNT separations and promotes the future use of SWCNT enantiomers in fundamental studies and applications.
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.
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