Design And Synthesis Of The Series Of Perylene Diimide Derivatives And Study Of Thier Films

The perylene bisimide derivatives have stable structure, unique light andelectrochemical properties, they absorb well in the visible and near infrared spectrum, thederivatives have good applications in organic photoelectric devices as n-typesemiconductor, and have a wide range potential applications in organic light-emittingdiodes (OLEDs), photovoltaic devices, field-effect transistors (OFET) and other organicelectronic devices. Due to the structure optimization of this material can improve thephotoelectric conversion efficiency in the devices, and the membrane processing is also animportant approach to effectively improve the efficiency of solar cells. Therefore, designand synthesis of perylene diimide derivatives with high solubility, and investigation intophotoelectric properties of their films have already become a hot topic in the field ofscientific community.In this study, the design and synthesis of containing different substituent threePerylene bisimide derivatives with containing different substituents: N,N’-bis-iso-octyl-16;1,7-di(4-t-butylphenoxy)-perylene-3,4,9,10-tertracar boxylic acid diimide (PITD),A bridged double benzimidazole perylene derivative(BIDP)and nitro-bis (benzimidazo)Perylene (NBZP), and characterized by FT-IR, UV-Vis spectrum, thermogravimetricanalysis (TG) and1H NMR; And then the photophysical properties in solution, andHOMO energy level and LUMO energy level were studied. The results indicate thatdifferent substituents in perylene bisimide derivatives have certain effect on light physicalproperties and the influence of the level.By UV-Vis absorption spectrum observed that the degree of protonation of thesePerylene bisimide derivatives derivatives in hydrazine, then choosed perylene polyimidesolution above as electrolyte, ITO glass and the platinum foil as the anode and cathode,respectively, preparation perylene polyimide films with electrochemical method, whichwere characterized with SEM, UV-visible spectrophotometry meter, as well as X-raydiffraction (XRD).Because of good solubility of PITD, one-dimensional nanometer PITD can be obtained by phase transfer method of supramolecular self-assembly, then nanostructureswere characterized by the UV-visible spectrum, fluorescence spectrum, SEM and XRD,The results show that: the micro/nano structure of PITD is the rules of the order andhierarchical structure.