RUI: Two- and Three-Dimensional Coordination Polymers Self-Assembled from Platinum Group Metal Thiacrown Complexes

RUI无机化学、生物无机化学和金属有机化学奖支持田纳西大学查塔努加分校的格雷格·格兰特教授的工作。本论文系统地研究了过渡金属自组装形成的二维和三维金属超分子络合物的制备。该项目特别感兴趣的是使用基于带有硫杂冠醚配体的过渡金属络合物的顶点来指导超分子结构的自组装。该项目正在准备正方形和六边形等二维结构，并正在进行立方体三维结构。特别是，大多数铂族金属配合物与这些配体显示出丰富的电化学活性，然后可以建立在多边形和多面体。可以访问分子正方形或立方体的金属离子的多个氧化态，使得正方形或立方体的总电荷能够被微调。控制自组装材料的总电荷对其在存储应用中的使用具有重要的影响。该项目在教育和培训年轻的化学家成为未来的专业人员方面具有理想的作用。一个两年的博士后职位仿照德莱弗斯基金会的本科生奖学金/研究员计划。博士后不仅参与研究项目，还参与涉及本科生的兼职教学和研究活动。包括圣约人学院和圣凯瑟琳学院在内的9名本科生研究人员将参与该项目。PI、博士后研究员和NSF Rui Grant资助的本科生都是从事这些金属超分子络合物研究的研究团队的成员。这样的自组装结构在人工分子机、战略气体存储、多相催化和一系列主-客体相互作用等应用中非常重要。二维和三维金属有机网络可以形成多孔但结晶的固体，已在氢气和甲烷存储等领域得到开发。

This RUI award in the Inorganic, Bioinorganic, and Organometallic Chemistry program supports the work of Professor Greg Grant at the University of Tennessee at Chattanooga. The research focuses on a systematic investigation of the preparation of two- and three-dimensional metallosupramolecular complexes formed by transition metal mediated self-assembly. The project is specifically interested in using vertices based upon transition metal complexes with thiacrown ligands as subunits to direct the self-assembly of the supramolecular structure. The project is preparing two-dimensional structures such as squares and hexagons as well as proceeding to cubic three-dimensional structures. In particular, most platinum group metal complexes with these ligands show a rich electrochemical activity which can then be built into the polygons and polyhedra. Multiple oxidation states for the metal ions of the molecular square or cube can be accessed, enabling the overall charge of the square or cube to be fine-tuned. Controlling the overall charge of the self-assembled material has important consequences for its utilization in storage applications. The project has an ideal role in the education and training of young chemists to be future professionals. A two-year postdoctoral position modeled after the Dreyfus Foundation's Scholar/Fellow Program for Undergraduate Institutions is included. The postdoctoral Fellow is involved not only in the research project, but also in part-time teaching and research activities involving the undergraduate students. Nine undergraduate researchers including two at other undergraduate institutions, Covenant College and the College of St. Catherine, will be involved in the project. The PI, the postdoctoral Fellow, and the undergraduate students supported by the NSF RUI Grant are all members of a research team engaged in the study of these metallosupramolecular complexes. Self-assembled structures such as these are important in applications such as artificial molecular machines, strategic gas storage, heterogeneous catalysis, and an array of host-guest interactions. The ability of two-dimensional and three-dimensional metal organic networks, which can form porous, yet crystalline solids, has been exploited in fields such as hydrogen and methane storage.