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Photophysics of Metal-Organic and Organometallic pi-Conjugated Oligomers

金属有机和有机金属π共轭低聚物的光物理学

基本信息

批准号：
0211252
负责人：
Kirk Schanze
金额：
$ 34.5万
依托单位：
University of Florida
依托单位国家：
美国
项目类别：
Continuing Grant
财政年份：
2002
资助国家：
美国
起止时间：
2002-07-01 至 2006-06-30
项目状态：
已结题

来源：
https://www.nsf.gov/awardsearch/showAward?AWD_ID=0211252&HistoricalAwards=false
关键词：
Photophysics Metal Organic Organometallic pi

项目摘要

This award by the Inorganic, Bioinorganic and Organometallic Chemistry program supports research by Professor Kirk S. Schanze of the University of Florida to pursue studies on the "Photophysics of Metal-Organic and Organometallic pi-Conjugated Oligomers". Pi-conjugated polymers and oligomers comprise a new generation of molecular materials with technologically useful optical, electronic, and opto-electronic properties. Research is underway to investigate the excited state properties of mono-disperse pi-conjugated oligomers that contain transition metal chromophores to gain a molecular level understanding of their excited state properties. Objectives include an understanding of how transition metal chromophores modify the excited state properties of the pi-conjugated organic systems and how the pi-conjugated molecules modify the excited state properties of the metal complexes, particularly the properties of the triplet-pi, pi* manifold of the conjugated oligomer. Metal ion complexes involved in metal-to-ligand charge transfer (MLCT) excited states include Ru(II), Os(II) and Rh(III) with alpha-thiophene oligomers that modulate the energy gap between the MLCT and triplet-pi,pi* manifolds in both mono- and polynuclear complexes. The excited state properties of platinum-acetylide oligomers will be examined to provide clear information concerning the spatial extent of the singlet-pi,pi* and triplet-pi,pi* excitons and to understand how inter-chain interactions modify the excited state properties of the pi-conjugated Pt-acetylides.The photochemistry of pi-conjugated molecules attached to transition metal ions are being investigated as to their basic photophysical properties with applications that include novel electronic light-emitting devices, light-to electrical energy conversion, laser light protection, and plastic electronic circuits.

该奖项由无机、生物无机和有机金属化学项目颁发，支持佛罗里达大学Kirk S. Schanze教授对“金属-有机和有机金属偶联寡聚物的光物理学”的研究。pi共轭聚合物和低聚物构成了具有光学、电子和光电特性的新一代分子材料。研究人员正在研究含有过渡金属发色团的单分散pi共轭低聚物的激发态性质，以获得对其激发态性质的分子水平的理解。目标包括了解过渡金属发色团如何改变π共轭有机体系的激发态性质，以及π共轭分子如何改变金属配合物的激发态性质，特别是共轭低聚物的三重pi， pi*流形的性质。参与金属到配体电荷转移（MLCT）激发态的金属离子配合物包括Ru(II), Os（II）和Rh（III）与α -噻吩寡聚物，它们调节MLCT与单核和多核配合物中三重pi，pi*流形之间的能隙。我们将研究铂-乙酰基低聚物的激发态性质，以提供有关单重态、pi*和三重态、pi*激子的空间范围的清晰信息，并了解链间相互作用如何改变pi共轭pt -乙酰基的激发态性质。与过渡金属离子结合的π共轭分子的光化学性质正在研究其基本的光物理性质，其应用包括新型电子发光器件、光能转换、激光保护和塑料电子电路。