Perylene compound as well as preparation method and application thereof

The invention relates to the technical field of organic material synthesis, and discloses a perylene compound as well as a preparation method and application thereof, and the structural general formula of the perylene compound is as shown in formula I. The preparation method comprises the following steps: by taking twisted perylene nucleus 2, 5, 8, 11-tetrabromo-1, 6, 7, 12-tetramethoxy perylene as a substrate, carrying out Suzuki coupling reaction and ester hydrolysis reaction, introducing chlorine atoms with relatively large electronegativity at a Perii-site by utilizing acylating chlorination reaction in a one-pot way, and simultaneously converting carboxyl into acyl chloride, thereby obtaining the 2, 5, 8, 11-tetrabromo-1, 6, 7, 12-tetramethoxy perylene derivative. And finally, connecting the rigid disc-shaped aromatic core with biphenyl liquid crystal units with different flexible interval alkyl chain lengths through esterification reaction to obtain the perylene derivative with Ortho-site and Perii-site