U.S.-Brazil Cooperative Science Program: Spectroscopy and Binding Energies of Anion Solvates

美国-巴西合作科学奖将支持佛罗里达大学的约翰·艾勒和巴西圣保罗大学的何塞·里韦罗斯的合作。该项目将专注于测定负离子与一两个溶剂分子连接的红外光谱和结合能。这两个实验室都配备了质谱学(傅立叶变换离子回旋共振)和激光仪器。这个包括两名学生的美国小组有一个电喷雾电离源，它将提供一种形成单溶剂化阴离子的替代方法，也可能是形成双溶剂化阴离子的唯一方法。美国团队还配备了双激光红外多光子解离实验，允许在以前无法访问的波长区域获得离子的红外光谱。巴方将提供通过离子/分子反应形成阴离子溶剂的专业知识。这项合作可能会增加对第一和第二溶剂分子对孤立离子的影响的理解，从而加深对从气相中的“裸露”离子到溶液中完全溶剂化离子的转变的理解。

This U.S.-Brazil Cooperative Science award will support the collaboration of John Eyler of the University of Florida and Jose Riveros of the University of Sao Paulo in Brazil. The project will focus on determining the infrared spectra and binding energies of negative ions with one or two solvent molecules attached to them. Both laboratories involved are equipped with mass spectrometric (Fourier transform ion cyclotron resonance) and laser instrumentation. The U.S. group, which includes two students, has an electrospray ionization source that will provide an alternative method of forming singly solvated anions, and probably the only means of forming doubly solvated anions. The US group is also equipped for two-laser infrared multiple photon dissociation experiments, which permit infrared spectra of ions to be obtained in previously inaccessible wavelength regions. The Brazilian side will contribute expertise in forming the anion solvates by ion/molecule reactions. The collaboration will likely increase understanding of the effects that the first and second solvent molecule have on isolated ions, and thus of the transition from "naked" ions in the gas phase to fully solvated ions in solution.