Photophysics of Metal-Organic and Organometallic pi-Conjugated Oligomers

该奖项由无机，生物无机和有机化学计划支持柯克教授的研究。佛罗里达大学的尚泽进行“金属有机和有机物共轭低聚物的光物理学”研究。 π-共轭聚合物和低聚物包括具有技术上有用的光学、电子和光电性质的新一代分子材料。 研究正在进行中，以调查含有过渡金属发色团的单分散π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理解。 目标包括理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络合物的激发态性质，特别是共轭低聚物的三重态-π，π * 流形的性质。 参与金属-配体电荷转移（MLCT）激发态的金属离子络合物包括Ru（II）、Os（II）和Rh（III）与α-噻吩低聚物，其调节单核和多核络合物中MLCT与三重态-pi、pi* 流形之间的能隙。 将检查铂-乙炔化物低聚物的激发态性质以提供关于单线态-pi、pi* 和三线态-pi的空间范围的清楚信息，π * 激子，并了解链间相互作用如何改变π共轭Pt-乙炔的激发态性质。人们正在研究与过渡金属离子相连的共轭分子的基本光物理性质，其应用包括新型电子光-发光器件、光电能量转换、激光保护和塑料电子电路。

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.