Synthesis Of Novel Anthracene-containing Polymer And PPV And Their Properties

In recent years,Organic Light-Emitting Diode(OLED)has aroused the continuous attention of academia and industry because of its huge application prospect,especially the research and development of organic luminescent materials.However,whether it is a small molecule OLED device or a polymer OLED device,the preparation of an excellent performance organic luminescent material has been a challenge to be overcome.In this paper,a series of novel blue-emitting anthracene materials,blue-emitting anthracene-containing fluorene polymer material,and new polyphenylenevinylene(PPV)orange red materials were designed and synthesized from the viewpoint of material workers.Their optical properties were studied and analyzed,the main contents are as follows:In the second chapter,we synthesized 9,10-dibromoanthracenes with different side groups using different routes,such as 2-n-butyl-9,10-dibromoanthracene,2-t-butyl-9,10-dibromoanthracene,2,6-di-tert-butyl-9,10-dibromoanthracene and2,3,6,7-tetraoctyl-9,10-dibromoanthracene were synthesized and characterized.The alkyl chain groups we introduced improve the solubility of the molecules and lay the foundation for the preparation of new soluble polyanthracene materials.In the third chapter,we synthesized three different fluorene monomers with anthracene as the side group and synthesized the copolymer with dioctylfluorene.This is the first report on the conjugated polymer with anthracene as the side group.Overcome the side reaction in the synthesis process and more problems.In order to improve the solubility of fluorene,we introduced the long chain hexyl into the molecule.Finally,we synthesized three polyfluorenes by Suzuki coupling reaction of these three monomers with9,9-dioctylfluorene-2,7-bis(boronic acid pinacol ester),and studied their photoelectric properties.It is found that the yellow light emission of polymer in the film state.After in-depth study,it is considered that the aggregation of side anthracene forms excimer,resulting in new energy levels and new emission peaks.In the fourth chapter,we synthesized a new type of chiral PPV and achiral PPVmonomers,and then polymerized separately.Finally,the polymer properties were studied.Studies have shown that the maximum emission peak of these two polymers in chloroform were 558 nm,556nm.The maximum emission peak in the film state is at 602 nm,610 nm,and red orange light is emitted.The performance of the device will be continued by the partner unit.