Nanocomposites of Graphene Nanosheets Grafted with poly(۳-hexylthiophene) Chains and P۳HT Homopolymer as Well as Hydrophobic P۳HT-b-polystyrene Block Copolymers

Nanocomposites of reduced graphene oxide (rGO) nanosheets grafted with regioregular poly(۳-hexylthiophene) (P۳HT) (rGO-g-P۳HT) and P۳HT homopolymers as well as P۳HT-b-polystyrene (PS) block copolymers were fabricated. The assembling of P۳HT and P۳HT-b-PS chains onto the rGO and rGO-g-P۳HT nanosheets was investigated by using transmission electron microscopic (TEM) images and XPS measurements. The homopolymers and copolymers were assembled from the P۳HT sides onto the rGO-g-P۳HT nanosheets. The UV-Vis spectra of P۳HT, rGO-g-P۳HT, and rGO-g-P۳HT/P۳HT-b-PS supramolecules were measured. Results revealed that the grafting of RR-P۳HT chains onto the rGO nanosheets enhanced donor-acceptor properties and orderly assembling of P۳HT-b-PS block copolymers onto the rGO-g-P۳HT nanosheets developed the net electron and hole highways for charge transport, thereby, the charge mobility values considerably increased. So, these nanocomposites could be used in the modification of active layer morphology in polymer solar cells.

کلیدواژه ها:

rGO-g-P۳HT ، P۳HT-b-PS ، Nanocomposites