Novel Oligomeric MLCT Excited States

B。怀俄明州大学的帕特里克沙利文得到了无机、生物无机和有机化学项目的支持，研究线性低聚物的合成，并研究它们的光激发和电子转移性质。二膦和氰基都将用作桥接配体，以通过限制构象柔性来促进定向电子或能量转移。将开发新的合成程序，以构建具有特定长度的低聚物，并具有促进定向能量和电子转移的性质。还将对选定过程的动力学进行研究，以优化低聚物链的能量转移效率。后期的工作将处理整流在半导体（二氧化钛）接口，并使用锰为基础的发色团作为替代品的Re配合物。这项研究解决了促进定向电子和能量传输的因素，这是一个具有广泛潜在适用性的重要问题。大量的初步结果表明，拟议的研究有很大的成功可能性。 研究结果对开发实用的太阳能收集方法具有重要意义。拟议的研究还将为学生和博士后提供良好的培训。

B. Patrick Sullivan of the University of Wyoming is supported by the Inorganic, Bioinorganic, and Organometallic Chemistry Program for research on synthesis of linear oligomeric rhenium complexes, and investigation of their photoexcitation and electron-transfer properties. Both diphosphines and cyano groups will be used as bridging ligands, in order to favor directional electron or energy transfer through restriction of conformational flexibility. New synthetic procedures will be developed in order to build oligomeric rhenium complexes with specific lengths, and having properties that will facilitate directional energy and electron transfer. Studies of the dynamics of selected processes will also be carried out to optimize efficiency of energy transfer down the oligomeric chain. Later stages of the work will deal with rectification at semiconductor (titania) interfaces, and use of Mn-based chromophores as surrogates for Re complexes. This research addresses factors that facilitate directional electron and energy transport, an important problem with wide potential applicability. Substantial preliminary results indicate that the proposed research has a good likelihood of success. The results may well be important in development of practical methods for solar energy collection. The proposed research will also provide excellent training for students and post-doctoral associates.