Design of Dispersants for the Dispersion of Carbon Nanotubes in an Organic Solvent (pages 1775–1783)
K. K. Kim, S.-M. Yoon, J.-Y. Choi, J. Lee, B.-K. Kim, J. M. Kim, J.-H. Lee, U. Paik, M. H. Park, C. W. Yang, K. H. An, Y. Chung and Y. H. Lee
Version of Record online: 20 JUN 2007 | DOI: 10.1002/adfm.200600915
Oligomeric dispersants based on a 3-hexylthiophene monomer are used to disperse single-walled carbon nanotubes (SWCNTs) in an organic solvent. The number of repeat units, the regioregularity of the head groups, and the head-to-tail ratios (see figure) are varied to enhance the dispersion of SWCNTs. SWCNTs combined with thiophene oligomers remain homogeneous in solution while SWCNTs in solution without added dispersant aggregate over time (see figure, right panel).