LAUSR

We report a crystalline two-dimensional (2D) benzotrithiophene-based graphdiyne (BTT-GDY), which features diacetylene as linkages and BTT as the functionalized core. The well-defined 2D structure of BTT-GDY with a unique pore was well characterized by selected area electron diffraction due to its good crystallinity. BTT-GDY films show some semiconductor characteristics including a bandgap of 2.38 eV, the conductivity of 2 × 10−3 S m−1 at room temperature. The hole mobility and the electron mobility of BTT-GDY films were determined to be 2.34 cm2 V−1 S−1 and 3.35 × 10−2 cm2 V−1 S−1 by the space-charge-limited-current method.