CAREER: Development of Novel Organic/Inorganic Hybrid Oligomer Architectures

这项工作的研究部分的目的是制备一些C2对称的芳香族杂环和卟啉，并将这些成分组装成低聚辛烷(分子链)和其他类型的交织低聚物。用于链组装的单体主要是双(吡啶)吡啶、双(苯并咪唑基)吡啶和双(苯并咪唑基)丙烷单元。这些配体含有苯基卤化物或苯甲醛官能团，这些官能团允许未来的链增长。在合成配体后，两个配体与锌(II)或铜(I)配位，在分子链上形成一个“扭结”，然后在配体中的官能团上引发链的生长。使用这种方法将制备各种链状化合物和杂金属寡酸盐。柱低聚物和二维网格和网络也将使用类似的策略制备，但从甲酰基官能化的卟啉单体开始。这个项目有两个主要的教育组成部分。在教育推广方面，该小组正在与克利夫兰自然历史博物馆和五大湖科学中心合作，建立聚合物科学日和聚合物游乐场展品。这项工作的另一个教育组成部分是在CWRU开发两门聚合物化学讲座课程，一门主要针对化学、工程和材料科学专业本科生，另一门主要针对研究生。凭借这一职业奖项，有机和高分子化学项目正在支持凯斯西储大学化学系的Stuart J.Rowan博士的研究和教育目标。Rowan博士将探索杂环单体的合成，这些单体可以组装成分子链以及相互交织的网格和网络。这种材料可能在高温聚合物、传感器和分离膜的开发中具有实际应用，以及表现出可能被证明在显示设备中有用的导电和捕光性能。通过该项目培训的学生将获得材料研究以及超分子有机化学和无机化学方面的经验，因此他们将拥有特种化学品和计算机/材料行业所需的技能。在教育推广方面，该小组正在与克利夫兰自然历史博物馆和五大湖科学中心合作，建立聚合物科学日和聚合物游乐场展品。这项工作的另一个教育组成部分是在CWRU开发两门聚合物化学讲座课程，一门主要针对化学、工程和材料科学专业本科生，另一门主要针对研究生。

The objective of the research component of this work is the preparation of a number of C2-symmetric aromatic heterocycles and porphyrins and the assembly of these components into oligocatenanes (molecular chains) and other types of interwoven oligomers. The monomers used for chain assembly are predominantly bis-(pyridyl)pyridines, bis-(benzimidazolyl)pyridines and bis-(benzimidazolyl)propane units. These ligands contain benzyl halide or benzaldehyde functional groups which allow for future chain growth. After the ligands are synthesized, two are complexed to Zn(II) or Cu(I) to provide a "kink" in the molecular chain and then chain growth is initiated off the functional groups in the ligands. A variety of catenates and hetero-metallic oligocatenates will be prepared using this approach. Column oligomers and two dimensional grids and networks will also be prepared using a similar strategy but starting with formyl functionalized porphyrin monomers. There are two major educational components to this project. In educational outreach, this group is working with the Cleveland Museum of Natural History and the Great Lakes Science Center to establish Polymer Science Days and Polymer Funhouse exhibits. An additional educational component of this work is the development of two polymer chemistry lecture courses at CWRU, one aimed primarily at undergraduate chemistry, engineering and materials science majors and a second aimed primarily at graduate students. With this CAREER award, the Organic and Macromolecular Chemistry Program is supporting the research and educational goals of Dr. Stuart J. Rowan of the Department of Chemistry at Case Western Reserve University. Dr. Rowan will explore the synthesis of heterocyclic monomers which can be assembled into molecular chains and interwoven grids and networks. Such materials may have practical applications in the development of high temperature polymers, sensors, and separation membranes as well as exhibiting conducting and light harvesting properties which may prove useful in display devices. Students trained as a result of working on this project will gain experience in materials research as well as supramolecular organic and inorganic chemistry, hence they will have skills needed by both the specialty chemicals and the computer/materials industries. In educational outreach, this group is working with the Cleveland Museum of Natural History and the Great Lakes Science Center to establish Polymer Science Days and Polymer Funhouse exhibits. An additional educational component of this work is the development of two polymer chemistry lecture courses at CWRU, one aimed primarily at undergraduate chemistry, engineering and materials science majors and a second aimed primarily at graduate students.