Research Article

DFT Study of Polythiophene Energy Band Gap and Substitution Effects

Figure 7

Calculated electronic absorption and emission of octamers units of 8T, 8TOC (HH, HT, and TT), 8TOOC, and 8TCOC (HH, HT, and TT) obtained by CAM-B3LYP/6-31G(d,p).