Cross pentacene analogue and preparation method and application thereof

The invention discloses a novel cross pentacene analogue and a preparation method and an application thereof. The structural formula of the analogue is shown as formula I. The cross pentacene analogue shown as formula I disclosed by the invention has a larger pi-conjugate plane and better solubility, and is expected to be used for preparing an OFET (Organic Field Effect Transistor) apparatus with high migration rate by a solution method. The novel cross pentacene analogue has lower highest occupied molecular orbital (HOMO) energy level and good stability in air, so that the OFET apparatus stable in air with high migration rate and high switch ratio can be obtained. The migration rate (mu) and the switch ratio of the OFET apparatus prepared by using the novel cross pentacene analogue disclosed by the invention as an organic semiconductor layer are higher (mu is maximally 0.012cm Vs, and the switch ratio is greater than 10 ). The novel cross pentacene analogue has further research and application prospe