Fig. 5: Transient absorption spectroscopy measurements for polymers with different linkers.

Transient absorption spectra of a PITIC-Ph Pdots (water solution), b PITIC-Th Pdots, and c PITIC-ThF Pdots at different delay times. Transient absorption traces of d PITIC-Ph Pdot (probed at 568 nm), e PITIC-Th Pdots (probed at 732 nm), and f PITIC-ThF Pdots (probed at 739 nm). The data were obtained using an excitation wavelength of 550 nm for PITIC-Ph Pdot and 650 nm for both PITIC-Th and PITIC-ThF Pdot, using a power of 10 μW. g Schematic diagram presenting the effect of different likers on the charge transfer between acceptors of repeated moieties of the polymer and the charge recombination between the acceptor and donor.