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. Author manuscript; available in PMC: 2019 Jun 1.

Published in final edited form as: Small. 2018 May 7;14(23):e1703915. doi: 10.1002/smll.201703915

Figure 1: — (A) Scheme to explain the density gradient ultracentrifugation (DGU) procedure for preparing length-sorted SWCNTs. (B) Length and diameter data were obtained for the sorted tubes through the use of AFM. The average diameter of the of the sorted SWCNTs was 0.86 nm, while the average lengths were measured to be 318 nm, 789 nm and 1215 nm for tube categories labeled as short, medium and long, respectively. Histograms were obtained for at least 100 individual SWCNTs in each case. (C) Representative AFM images of the three length-sorted samples. (D) UV-Vis-NIR absorption spectra of the length-sorted SWCNTs. The two absorption peaks ∼566 nm and ∼976 nm are characteristic of the semiconducting (6, 5) CoMoCAT SWCNTs used throughout this study.

*f: fraction

Figure 1: — (A) Scheme to explain the density gradient ultracentrifugation (DGU) procedure for preparing length-sorted SWCNTs. (B) Length and diameter data were obtained for the sorted tubes through the use of AFM. The average diameter of the of the sorted SWCNTs was 0.86 nm, while the average lengths were measured to be 318 nm, 789 nm and 1215 nm for tube categories labeled as short, medium and long, respectively. Histograms were obtained for at least 100 individual SWCNTs in each case. (C) Representative AFM images of the three length-sorted samples. (D) UV-Vis-NIR absorption spectra of the length-sorted SWCNTs. The two absorption peaks ∼566 nm and ∼976 nm are characteristic of the semiconducting (6, 5) CoMoCAT SWCNTs used throughout this study.

*f: fraction