| abstract |
The invention discloses a compound having a nitro-based electron withdrawing group, a non-fullerene electron acceptor material and a preparation method thereof. Wherein, the compound with nitro-based electron withdrawing group has the following structure: Wherein, R1 and R2 are H, F, Cl, Br, I or -CH 3 . The main functional group in the compound with electron withdrawing group based on nitro group provided by the present invention is nitro group and does not contain cyano group (-C≡N), so it has the advantage of being environmentally friendly. The non-fullerene electron acceptor material prepared by using the compound has lower LUMO energy level and stronger electron affinity than the existing non-fullerene electron acceptor material, which is beneficial to improve its electron-withdrawing ability and improve the The utilization of solar energy and the transmission performance of electrons. |