High performance oxygen-bridged N-shaped semiconductors with a stabilized crystal phase and blue luminescence

Here, we describe an oxygen-bridged N-shaped pi-electron core, dinaphtho[2,3-d: 2',3'-d'] benzo[1,2-b: 4,5-b'] difuran (DNBDF), as a new entity of organic semiconducting materials. Interestingly, by introduction of flexible alkyl chains at appropriate positions, DNBDF pi-cores exhibit solution processability, a highly stabilized crystal phase, high mobility, and blue luminescence as a solid.