NSF Young Investigator - Electronic Interactions in Radicals, Biradicals, and Spin-Correlated Biradicals

9357108福布斯有机动力学项目颁发的这一美国国家科学基金会青年研究人员奖支持北卡罗来纳大学教堂山分校的福布斯教授在一系列化学体系中研究双自由基体系。具体的研究领域是：(A)通过探索不饱和度、间隔基、温度和溶剂的影响来研究新型半柔性有机双自由基中的交换偶联，以评价贯穿键和贯穿空间的机理；(B)利用超快时间分辨EPR光谱研究有机活性中间体在固体表面的扩散，重点是确定溶剂的影响；(C)利用双自由基作为聚合物链动力学和光降解的探针的研究，包括使用超临界流体；(D)利用烯烃甲基化合成双环酮和三环酮；(E)改进多频时间分辨EPR波谱方法。马尔科姆·福布斯教授将在从多环酮合成到烯烃甲基化和阴离子聚合的各种体系中进行有机双自由基的研究。这项研究的主要目的是确定分子系统的不同部分如何相互电子通信，以及外部因素(如溶剂、温度和间隔基)如何影响扩散、动力学和交换耦合。这项工作将包括对溶剂/固体界面的扩散研究和对可光降解聚合物的研究。***

9357108 Forbes This NSF Young Investigator Award from the Organic Dynamics Program supports the work of Professor Forbes at the University of North Carolina, Chapel Hill on biradical systems in an array of chemical systems. The specific areas are: (a) studies of exchange couplings in novel semi- flexible organic biradicals by exploring the effects of unsaturation, spacers, temperature, and solvents with the objective to evaluate the through-bond and through-space mechanisms; (b) studies on diffusion of organic reactive intermediates on solid surfaces using ultra fast time-resolved EPR spectroscopy with emphasis on determining the influence of solvents; (c) studies using biradicals as probes of polymer chain dynamics and photodegradation including the use of supercritical fluids; (d) synthesis of bi- and tricyclic ketones using olefin methathesis; and (e) improving the multiple frequency time-resolved EPR spectroscopy methodology. %%% With this NYI award Professor Malcolm Forbes will conduct studies of organic biradicals in a variety of systems that range from the synthesis of polycyclic ketones to olefin methathesis and anionic polymerization. The research is largely aimed at determining how the different parts of molecular systems communicate with each other electronically and how external factors such as solvents, temperature, and spacers influence the diffusion, dynamics, and exchange couplings. The work will include diffusion studies on the solvent/solid interface and studies on photodegradable polymers. ***