Table 1.
Peptoid block copolymer pNdcn-b-pNten and nanotube characteristics
| n | Weight fraction pNte, % | Molar mass, g/mol, calc/obs | Molecular purity,* % | Nanotube diameter,† nm | Latitudinal stripe periodicity, nm, WAXS/EM | Longitudinal stripe periodicity,† nm |
| 9 | 50.4 | 3,662.7/3,664.9 | 95‡ | 5.0 ± 0.5 | 2.4 ± 0.1/2.4 ± 0.2 | 5.7 ± 0.6 |
| 13 | 50.5 | 5,264.9/5,265.6 | 95‡ | 4.3 ± 0.3 | 2.4 ± 0.1/2.4 ± 0.2 | 7.1 ± 0.5 |
| 18 | 50.6 | 7,267.3/7,263.1 | 90§ | 9.3 ± 0.3 | 2.4 ± 0.1/2.4 ± 0.2 | 11.1 ± 0.9 |
*
As determined by reverse-phase HPLC and MALDI-MS; the remaining impurities are predominantly full-length polymer missing one monomer.
†
As determined by analysis of TEM images.
‡
As determined by MALDI (35).
§
As determined by HPLC.