SBIR Phase I: Novel Functionalized Polymer-Trivalent Lanthanide Metal Ion Complexes for Advanced Electroluminescent Devices

**** 9661470 Chittibabu这个第一阶段的小企业创新研究项目将合成和开发新型聚合物材料及其三价镧系化合物，并采用一层一层沉积技术将其加工成薄膜，用于先进的电致发光器件。基于有机材料的电致发光器件由于其作为平板显示器的潜在应用，最近引起了人们的极大兴趣。已经取得了显著的成就，包括低驱动电压、优异的亮度和全彩色显示。小的电致发光/电荷传输分子的结晶，由于产生热量而导致的电荷注入接触的降解和氧化降解是与该器件相关的关键问题。在器件制造过程中，采用高迁移率的电子和空穴传输聚合物，通过与高荧光镧系金属离子络合交联，有望最大限度地减少结晶和降解，并使电致发光器件相当稳定。本文将讨论配体功能化聚合物的合成和表征，以及镧系离子与这些聚合物的逐层沉积络合。将对新型聚合物/镧系化合物配合物电致发光器件的性能进行实验评估。人们期待稳定和高性能的电致发光器件。利用高荧光镧系金属离子对发光电子和空穴传输聚合物进行一层一层交联的新方法将最大限度地减少电致发光器件的降解，并提高该器件的电致发光效率。白光可以通过适当选择电子和空穴传输聚合物来实现。功能化聚合物-金属配合物的成功开发将为电致发光平板显示提供更实用的有机材料。

**** 9661470 Chittibabu This Phase I Small Business Innovation Research project will synthesize and develop novel polymeric materials and their trivalent lanthanide complexes and process them as thin films employing layer by layer deposition technique for advanced electroluminescent devices. Organic material based electroluminescent devices have recently attracted much interest, due to their potential applications as flat panel displays. Significant achievements have been made, including low driving voltages, excellent brightness, and full color displays. The crystallization of the small electroluminescent/charge transporting molecules, degradation of the charge injecting contacts due to the production of heat and oxidative degradation are the key problems associated with such devices. Employing high mobility electron and hole transporting polymers, cross-linking them by complexation with highly florescent, lanthanide metal ions during the device fabrication is expected to minimize the crystallization and degradation, and will make the electroluminescent devices quite stable. The synthesis and characterization of the ligand functionalized polymers, and the complexation of the lanthanide ions with these polymers employing layer by layer deposition technique will be addressed. Experiments to evaluate the performance, on the novel polymer/lanthanide complex based electroluminescent devices will be carried out. Stable and high performance electroluminescent devices are expected. The approach of utilizing novel layer by layer cross-linking of the luminescent electron and hole transporting polymers using highly flourescent lanthanide metal ions will minimize the degradation of the electroluminescent devices and will enhance the electroluminescence efficiency of such devices. White light can be achieved by using the proper choice of electron and hole transporting polymers. The successful development of the functionalized polymer-metal complexes will result in more practical organic mat erials for electroluminescence based flat panel display applications.