New thiophene-carbazole-based ligands for efficient singlet to triplet intersystem crossing and triplet to Ln(III) energy transfer

新型噻吩-咔唑基配体可实现有效的单线态到三线态间窜越以及三线态到 Ln(III) 能量转移

基本信息

批准号：
0733458
负责人：
Ana de Bettencourt-Dias
金额：
$ 34.3万
依托单位：
Board of Regents, NSHE, obo University of Nevada, Reno
依托单位国家：
美国
项目类别：
Standard Grant
财政年份：
2007
资助国家：
美国
起止时间：
2007-07-01 至 2011-08-31
项目状态：
已结题

来源：
https://www.nsf.gov/awardsearch/showAward?AWD_ID=0733458&HistoricalAwards=false
关键词：
New thiophene carbazole based ligands

项目摘要

With the support of the Inorganic, Bioinorganic and Organometallic Chemistry Program, Professor Ana de Bettencourt-Dias, of the Department of Chemistry at the University of Nevada Reno to study the efficiency of intersystem crossing of new ligands, which have a thiophene-carbazole-thiophene backbone, as a function of the conformation of the ligand and of the chelating group coordinated to the backbone. These ligands will be incorporated into lanthanide ion complexes and the stabilities and emission efficiencies of these complexes will be examined. The proposed ligands will serve as useful lanthanide ion sensitization probes and their respective complexes will be studied in terms of their photochemical and photophysical perperties. This project will show how the singlet and triplet states of the ligands depend on their chemical composition and conformation. The complexes will lead to new lanthanide-based emmitting materials with application in light-emitting diodes for flat panel displays. Undergraduate students involved in this project will gain research experience and learn several synthetic techniques in an area of chemistry that has practical applications in the field of color displays. Graduate students will acquire in-depth knowledge of coordination chemistry as well as the applications and research done in rare earth and materials chemistry. Finally, the above compounds may also be used as precursors for electroactive materials for hydrogen storage and spin valves, hole transport layers, catalysts and porous materials.

With the support of the Inorganic, Bioinorganic and Organometallic Chemistry Program, Professor Ana de Bettencourt-Dias, of the Department of Chemistry at the University of Nevada Reno to study the efficiency of intersystem crossing of new ligands, which have a thiophene-carbazole-thiophene backbone, as a function of the conformation of the ligand and of the chelating group coordinated to the骨干。这些配体将掺入灯笼离子复合物中，并将检查这些配合物的稳定性和发射效率。所提出的配体将用作有用的灯笼离子敏化探针，其各自的复合物将根据其光化学和光物理持久性研究。该项目将展示配体的单线和三胞胎状态如何取决于它们的化学成分和构象。这些复合物将导致新的基于兰烷的弹药材料，并在发光二极管中应用用于平板显示器。参与该项目的本科生将获得研究经验，并在化学领域学习几种合成技术，这些技术在颜色显示领域具有实际应用。研究生将获得有关协调化学的深入了解，以及在稀土和材料化学中进行的应用和研究。最后，上述化合物还可以用作用于氢气和自旋阀，孔传输层，催化剂和多孔材料的电活性材料的前体。