▎ 摘　　要

In this work, we have successfully synthesized azobenzene nanocluster from azobenzene molecules through a bottom-up approach. The synthesized azobenzene nanocluster shows beautiful green fluorescence and well dispersed in aqueous medium. Interestingly, the photoswitchable property of azobenzene molecules is also retained in the azobenzene nanocluster. Furthermore, we have synthesized successfully two types of functionalized graphene composites with the azobenzene nanocluster, one is with reduced graphene oxide (rGO) through pi-pi stacking, and other is direct immobilization on graphene oxide (GO). The electrical properties of rGO- azobenzene nanocluster reveal n-type behavior and GO p-type. Eventually, when rGO- azo-benzene nanocluster and GO is coated on 1 cm x 1 cm filter paper substrate to form a junction it shows the characteristic curve of the diode successfully showing the use of the material in electronic devices.