Design And Synthesis Of Photoelectric Materials Based On N-heteroacenes And N-doping Graphene

Organic acenes, composing of sp2carbon atoms, have attracted increasing attentions because of its cheapness and impressive performance. In recent years, it is found that the stacking mode can be modulated by introducing substituents into the skeleton of acenes, enhancing π-π interaction, resulting in increase of mobilities. The HOMO and LUMO level can also be lowered down by importing nitrogen atoms, improving the stability of the molecules.The first part of the thesis focuses on the design and synthesis a series of N-heteroacene derivatives. The aim is to study the electrical properties, ie. field effect mobility. Because vacuum coating cannot be carried out due to the poor thermal stability of the molecules, solution process for organic thin film was explored for these materials.Molybdenum disulphide (MoS2), possesses lamellar structure similar to graphene. It has been considered as an excellent catalyst for hydrogen evolution reaction (HER). Under the optimal morphology, the catalytic performance is comparable to that of platinum catalyst. At the same time, trioctylphosphine (TOP) was used as the surfactant to control the morphology to compare the catalytic performance under different morphology.