Lanthanide Optical Spectroscopy

Fredrick Richardson博士得到了实验物理化学计划的资助，继续他在溶液和固态中镧系离子和配合物的电子结构、光学和磁光谱学以及配位特性方面的研究。该研究将在设计用于激光的镧系光学材料、将镧系离子用作生物系统的结构探针以及表征溶液中镧系元素的配位性质等方面具有实际应用价值。Richardson的主要研究重点是与镧系4f电子及其与配体和晶体场、磁场和辐射场的相互作用有关的性质和过程。Richardson正试图建立光学性质、电子态结构、配位数和几何形状之间的定量关系，以及包含多原子配体、多齿螯合结构和以特定方式影响光学性质的功能特异性配体取代基的镧系配合物的配体结构。双光子吸收和电子拉曼散射实验将研究单光子光学吸收和发射技术无法研究的配场相互作用和状态。热学测量也将用于研究几类系统的详细状态结构。

Dr. Fredrick Richardson is supported by a grant from the Experimental Physical Chemistry Program to continue his research on the electronic structure, optical and magneto-optical spectroscopy, and coordination properties of lanthanide ions and complexes in solution and in the solid state. This research will have practical applications in the design of lanthanide-based optical materials for lasers, the use of lanthanide ions as structural probes for biological systems, and the characterization of lanthanide coordination properties in solution. The primary emphasis of Richardson's research is on the properties and processes associated with the lanthanide 4f electrons and their interactions with ligand and crystal fields, magnetic fields, and radiation fields. Richardson is attempting to develop quantitative relationships between optical properties, electronic state structure, coordination number and geometry, and ligand structure of lanthanide complexes containing polyatomic ligands, multidentate chelate structures, and functionally specific ligand substituents that influence optical properties in specific ways. Two-photon absorption and electronic Raman scattering experiments will investigate ligand-field interactions and states not accessible to study by one-photon optical absorption and emission techniques. Chiroptical measurements will also be used to study detailed state structure of several classes of systems.