Synthesis, Photoelectric Properties And Theoretical Investigation Of Intra-molecular Charge Transfer Oligomeric Phenylene Vinylene

With the development of information technology, people demand for higher displaying technology of output terminal in information system. Organic Electroluminescence Devices(OELDs) possesses many kinds of merit on small volume , light weight, low consuming energy , multiple color and quick response. It has been the focus on development of photoelectric information technology in 21st century. The research on OELDs has been widely carried out in the world.This paper is planning to present some novel organic molecules, which are employed to explore and optimize red emitters that are rare light emitting materials. Theoretical investigation is carried out with quantum chemical calculation to design new routes to synthesize new red emitters.The most parts of thesis as follows:1. Five symmetrical intra-molecular charge transfer oligomeric phenylene vinylene light emitting materials were designed and synthesized using oligomeric phenylene vinylene as a framework.2. The structures of target molecule were characterized by ¹HNMR, ¹³CNMR, IR, MS and element analysis.3. In order to study the influence of the location and numbers of electron-donor and electron-acceptor on their photoelectric performance by changing length of OPV chain, the UV spectra and fluorescence spectra of target compounds has been compared. We have researched into main factors effecting on material emitting red-shift; organic electroluminescence device was prepared using the compound P4. The capability of eletroluminescence was researched.4. The photoelectric properties of P4 was explained by quantum chemical calculation (the Gaussian 98 quantum chemistry program). It is greatly contributed know the whole process of charge transfer to guide the design of red emitters.