Figure 6

AFM height images and root-mean-square (RMS) roughness of the polymer thin films. (a) PTTD4T-2DT, (b) PTTD4T-3DP, (c) PTTD4T-4DH, (d) PTTD4T-5DH, (e) PQA2T-2DT, (f) PQA2T-3DP, (g) PQA2T-4DH, and (h) PQA2T-5DH. AFM, atomic force microscopy. A full color version of this figure is available at Polymer Journal online.