How Large Can We Go? Isolation of >1 nm Diameter Single-Wall Carbon Nanotubes Species using Aqueous Two Phase Extraction

Published

April 14, 2015

Author(s)

Jeffrey A. Fagan, Erik Haroz, Rachelle Ihly, Hui Gui, Jeffrey Blackburn, Jeffrey R. Simpson, Stephen K. Doorn, Stephanie Lam, Angela R. Hight Walker, Ming Zheng

Abstract

We demonstrate the effective separation of near-monochiral single-wall carbon nanotube (SWCNT) species with diameters > 1 nm through multi-stage aqueous two phase extraction (ATPE), and report an empirical function for the surfactant concentrations at which different diameter SWCNTs partition into either the lower or upper phase during separation enabling predictive separation design These results not only dramatically increase the range of SWCNT diameters to which species selective separation can be achieved, but also identify a subset of SWCNTs that behave unusually as compared to other species. Together the results reported here indicate that lowest upper diameter limit for total separation of SWCNT species is  1.7 nm by the ATPE method.

Citation

ACS Nano

Volume

9

Issue

5

Pub Type

Journals

Download Paper

DOI Link

Keywords

single-wall carbon nanotube, SWCNT, separation, ATPE

Citation

Fagan, J. , Haroz, E. , Ihly, R. , , H. , Blackburn, J. , Simpson, J. , Doorn, S. , Lam, S. , Hight, A. and Zheng, M. (2015), How Large Can We Go? Isolation of >1 nm Diameter Single-Wall Carbon Nanotubes Species using Aqueous Two Phase Extraction, ACS Nano, [online], https://doi.org/10.1021/acsnano.5b01123 (Accessed October 11, 2025)