Novel Oligomeric MLCT Excited States

新型低聚 MLCT 激发态

• 批准号: 0213117
• 负责人: B. Patrick Sullivan
• 金额: $ 35万
• 依托单位: University of Wyoming
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2002
• 资助国家: 美国
• 起止时间: 2002-09-01 至 2007-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0213117&HistoricalAwards=false
• 关键词: Novel; Oligomeric; MLCT; Excited; States

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.

怀俄明大学的帕特里克·沙利文获得了无机化学、生物无机化学和金属有机化学计划的支持，致力于研究线型低聚稀土配合物的合成，并研究其光激发和电子转移性质。双膦和氰基都将被用作桥联配体，以便通过限制构象柔性来促进电子或能量的定向转移。将开发新的合成方法，以建立具有特定长度的低聚稀土络合物，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，以优化低聚物链下游的能量转移效率。这项工作的后期阶段将涉及半导体(二氧化钛)界面的整流，以及使用锰基发色团作为稀土络合物的替代品。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。这一结果很可能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助理提供极好的培训。