Figure 1

(a) 1H-NMR spectra of PF14-b-Piso20 in CDCl3. (b) FTIR spectra and (c) SEC profiles in tetrahydrofuran (THF) eluent of N3-Piso20 and PF14-b-Piso20. FTIR, Fourier transform infrared spectroscopy; NMR, nuclear magnetic resonance; PF, poly[2,7-(9,9-dihexylfluorene)]; Piso, poly(pendent isoindigo); SEC, size exclusion chromatography; TMS, tetramethylsilane.