The PL spectra of the polymers in CHCl3 (dashed lines in Figure ) were recorded upon excitation at the absorption maximum wavelengths of 305 and 308 nm, respectively. Poly(PCT-T) exhibited a PL maximum at 486 nm and poly(PCT-2T) at 512 nm, both redshifted compared to the PL maximum of PCT at 472 nm. As PCT, both polymers showed substantial Stokes shifts, leading to almost no overlap between absorption and PL bands.