Figure 1: Chemical structures and absoprtion data of the various studied polymers.

(a) Chemical structures of the various polythiophenes investigated. (b) Absorption spectra of the supernatants collected after centrifugation of the polythiophenes–SWNT suspensions. (c) Absorption intensities at 1288 nm from the supernatants of rr-P3DDT/SWNT, dispersed from −40 to 90 °C.