Control on <i>β</i> conformation of poly(9,9-di-n-octylfluorene) via solvent annealing

Control on β conformation of poly(9,9-di-n-octylfluorene) via solvent annealing

Chao Zhang Zhi¹, Yue Zhang Bing¹, Yan Weng Yu^{1, 2, †}, Hui Zhang Tian^{1, ‡}

The effect of annealing time on the β-phase fraction. (a) The AFM height image of the pristine PFO film. The AFM height images of the PFO film after immersion into the solvent/nonsolvent for (b) 1 min and (c) 10 min. (d) The β-phase fractions determined by UV–vis absorption spectra.