Influence of molecular weight on selective oligomer-assisted dispersion of single-walled carbon nanotubes and subsequent polymer exchangeElectronic supplementary information (ESI) available: Synthetic procedures and characterization of new compounds, procedures for preparation of SWNTs dispersions, additional PL maps and absorbance spectra. See DOI: 10.1039/c2cc17508h

A series of oligofluorenes was synthesized and used as a SWNT selecting template to study the chain length effect on SWNTs dispersions in toluene. The octamer exhibits the same selectivity as the corresponding polymer. Nevertheless, SWNT/oligomer complexes are unstable, which allows fast exchange of the oligomer with a coating polymer. Oligofluorenes are used for selective dispersion of SWNTs in toluene. The weakness of the oligomer/SWNT complex allows fast exchange between the oligomer and a coating polymer (PDDF-BT) at the nanotubes surface.