Spectroscopic Studies of Weakly Bound Metal-Molecule Complexes

肯塔基大学的杨栋生博士受化学系物理化学项目资助，从事弱结合金属-分子络合物的光谱研究。脉冲场电离-零电子动能(Zeke)谱将用于提供金属(Al，Ga，In，Sc，Y，La)配体(氨，胺，膦，精氨酸)1-1络合物的电子结构。这些络合物将通过脉冲激光蒸发制备，并用光电离质谱进行鉴定。用Zeke光谱测量的电离能和振动频率，结合从头计算，将被用来解释这些配合物的成键和结构。获得的光谱和理解将有助于半导体应用的检测和工艺开发以及这些络合物的反应机理的研究。在半导体工业中，拥有灵敏的光谱方法来检测重要金属(如铝、镓和铟)的氨、胺、膦和砷的络合物是很重要的。杨博士的工作将阐明这些络合物的电子结构。这些结果将为工业过程中这些物种的研究提供迫切需要的数据，并将加深我们对金属与有机金属络合物、生物无机络合物和金属表面这些有用分子相互作用的理解。

Dr. Dong-Sheng Yang of the University of Kentucky is funded for his research on spectroscopic studies of weakly bound metal-molecule complexes by the Physical Chemistry Program of the Chemistry Division. Pulsed field ionization-zero electron kinetic energy (ZEKE) spectroscopy will be used to provide the electronic structure of metal (Al, Ga, in, Sc, Y, La) ligand (ammonia, amines, phosphines, arsines) 1-1 complexes. These complexes will be prepared by pulsed laser vaporization and identified with photoionization mass spectroscopy. The ionization energies and vibrational frequencies measured by ZEKE spectroscopy will be used, in combination with ab initio calculations, to elucidate the bonding and structure of these complexes. The spectra and understanding obtained will be useful for detection and process development for semiconductor applications and for studies of the reaction mechanisms of these complexes.It is important in the semiconductor industry to have sensitive spectroscopic methods for detecting ammonia, amine, phosphine, and arsine complexes of important metals such as aluminum, gallium, and indium. Dr. Yang's work will elucidate the electronic structure of these complexes. Such results will provide critically needed data for the study of these species in industrial processes and will increase our understanding of how metals interact with such useful molecules in organometallic complexes, bioinorganic complexes, and at metal surfaces.