Two-State Living Coordinative Olefin Polymerization

获得化学催化项目的这一奖项后，马里兰大学帕克分校的Lawrence R. Sita教授将致力于发现和开发新的范例、催化剂和聚合工艺，这些工艺可用于显著扩大聚烯烃的范围及其最终用途，以支持新技术的应用。本研究的主要假设是，可以引入与链式生长繁殖相竞争的不同类别的快速和可逆动态过程，以建立两态活配位烯烃聚合，其中动态过程和繁殖的相对速率可以受到外部控制，从而在由两个极端边界结构划定的光谱上直接生产聚烯烃。为了消除目前基于催化剂结构和聚烯烃产品之间一对一相关性的经典方法所施加的现有限制，将设想和发展几个新的范例。除了科学影响之外，这项工作还将为美国在全球聚烯烃和化学工业中持续的科学和经济竞争地位提供支持，并为科学、技术、工程和数学（STEM）相关职业的下一代科学家和工程师提供培训。重要的是，发现和发展具有商业价值的新技术发明和创新将支持国民经济。

With this award from the Chemical Catalysis Program, Professor Lawrence R. Sita from University of Maryland at College Park will work on discovering and developing new paradigms, catalysts and polymerization processes that can be used to significantly expand the range of polyolefins and their end-use applications in support of new technologies. The primary hypothesis that will be pursued is that different categories of fast and reversible dynamic processes that are competitive with chain-growth propagation can be introduced to establish two-state living coordination olefin polymerization in which the relative rates of the dynamic process and propagation can be brought under external control to direct polyolefin production over a spectrum that is delineated by two extreme boundary structures. Several new paradigms will be conceived and developed in order to remove existing restrictions that are presently imposed by classical approaches that are based on a one-to-one correlation between catalyst structure and polyolefin product.In addition to the scientific impact this work will provide support for a continued scientific and economic competitive position of the U.S. in the global polyolefin and chemical industries and support training of future generation of scientists and engineers for science, technology, engineering, and mathematics (STEM) related careers. Importantly, the discovery and development of new technological inventions and innovations of commercial value will support the national economy.