Up-Conversion in Bridged Binuclear Complexes of the Lanthanide Ions: An Investigation of Cross-Relaxation in a Molecular Beam Environment

在这项研究计划拨款提案中，Mary Berry博士将探索在分子束中分离的镧系离子桥接双核配合物中交叉弛豫上转换的动力学。将研究几种桥接配合物，以确定是否会在凝聚相中实际发生上转化，并研究它们对挥发的适用性。这些研究中使用的设备包括带有加热喷嘴源的分子束仪器以及用于进行衰荡光谱和激光诱导荧光实验的设备。如果成功，这些实验将提供比凝聚相研究得到的交叉弛豫上转换更好的理解。在这个项目中，相当大的称为双核复合物的分子实体将在称为分子束的环境中进行检查。在这些条件下，每个复合物都与其他分子分离，因此用光刺激复合物的结果只取决于这些复合物的性质，而不取决于它们周围的物种。相对于检查凝聚相中的过程，对吸收光获得的能量转移过程的解释得到了简化，因为例如，消除了由配合物与宿主晶体之间的相互作用引起的复杂性。

In this proposal research planning grant Dr. Mary Berry will explore the dynamics of cross-relaxation up-conversion in bridged binuclear complexes of lanthanide ions isolated in a molecular beam. Several bridged complexes will be studied to determine whether up-conversion in condensed phases will actually occur and to investigate their suitability for volatilization. The apparatus used in these studies includes a molecular beam instrument with heated nozzle sources as well as equipment for performing ring-down spectroscopy and laser-induced fluorescence experiments. If successful, these experiments will provide a better understanding of cross relaxation up-conversion than is obtained from condensed phase studies. In this project fairly large molecular entities called binuclear complexes will be examined in an environment called a molecular beam. Under these conditions each complex is isolated from other molecules, and therefore the outcome of stimulating the complexes with light depends only on the nature of these complexes, and not on the species in their immediate surroundings. Interpretation of the processes involved in transferring energy gained from absorbing the light is simplified relative to examining those processes in condensed phases, since complications arising from interactions between the complexes and the host crystal, for example, are eliminated.