Takeda N1, Miller JR.
J Phys Chem B. 2012 Dec 20;116(50):14715-23. doi: 10.1021/jp3096242. Epub 2012 Dec 6.Optical absorption spectra of anions and cations of poly(3-decylthiophene) (P3DT) in solution were identified as single polarons. Pulse radiolysis of P3DT in THF determined the spatial extent of one negative polaron to be ~11.5 thiophene units by observing transient absorption of P3DT(-•) radical ions, which are prinicpally free ions, at 850 nm with ε = (7.25 ± 0.47) × 10(4) M(-1) cm(-1) and bleaching of the neutral absorption band at 450 nm. Read More