Reactivity of 1,2-Biradicals and Their Use in Applications

化学结构，动力学和机制计划支持辛辛那提大学的安娜Gudmundsdottir教授，他将对简单三重态1，2双自由基的反应性以及它们如何用于引发羟基苯基巴豆烷酯衍生物的光释放进行基本了解。不知道从这些羟基苯基巴豆烷酯衍生物释放的机制和速率阻止了它们用作光可去除的光保护基团（PRPG）。长期目标是设计PRPG来研究分子马达。本工作的目的是确定三重态光异构化的简单烯烃和乙烯基叠氮化合物的机制，并探索是否可以形成三重态1，2-双自由基的选择性，以及它们是否可以用来释放醇从PRPG和形成三重态乙烯基氮烯。拟议的研究将导致三重态1，2-双自由基和乙烯基氮烯的反应性更好地理解。此外，拟议的研究将导致新的PRPGs和从这些PRPGs.With在美国国家科学基金会化学部的化学结构，动力学和机制计划的支持下释放的机制的阐明，教授安娜Gudmundsdottir进行的研究，将潜在地影响生理学研究，因为这些PRPGs可以用来研究在生命系统中的生理事件。此外，了解所提出的PRPG的光释放机制将使设计新一代PRPG成为可能，这些PRPG可用于各种应用，例如递送药物，以及在家用产品中释放香料和驱虫剂。PI建议通过吸引高中和本科生来实施一项计划，重点是吸引代表性不足的学生在化学系内的各种研究小组中进行研究，包括PI，并为这些学生提供专注于其专业发展的教育活动。因此，拟议的研究和发展性教学将导致PI部门内的基础设施得到加强，并作为一个推广计划，例如，在中央州立大学化学系和该地区的其他学校。预计这些学生的进步将产生广泛的社会影响，并辅之以研究成果预期产生的积极影响。

The Chemical Structure, Dynamics and Mechanisms Program supports Professor Anna Gudmundsdottir of the University of Cincinnati who will develop a fundamental understanding of the reactivity of simple triplet 1,2 diradicals and how they can be used to initiate photorelease from hydroxyphenyl-crotoane ester derivatives. Not knowing the mechanism and the rate of the release from these hydroxyphenylcrotoane ester derivatives prevents their use as photoremovable photoprotecting groups (PRPGs). The long-term goal is to design PRPGs to study molecular motors. The objective of this work is to determine the mechanism for triplet photoisomerization of simple alkenes and vinyl azides and explore if triplet 1,2-biradical can be formed selectivity and if they can be used to both release alcohols from PRPGs and to form triplet vinyl nitrenes. The proposed research will result in a better understanding of the reactivity of triplet 1,2-biradicals and vinyl nitrenes. Furthermore, the proposed research will lead to new PRPGs and the elucidation of the mechanism for release from these PRPGs.With the support of the Chemical Structure, Dynamics and Mechanisms Program in the Chemistry Division at the National Science Foundation, Professor Anna Gudmundsdottir performs research that will potentially impact physiology studies since these PRPGs can be used to study physiological events in living systems. Furthermore, understanding the mechanism for photorelease from the proposed PRPGs will make it possible to design a new generation of PRPGs that can be used in various applications, such as delivering drugs, and releasing fragrances and bug repellent in household products. The PI proposes to implement a program by attracting both high school and undergraduate students, with a focus on attracting underrepresented students to do research in various research groups within the Chemistry Department, including the PI's, and also to provide these students with educational activities that focus on their professional development. Thus, the proposed research and the developmental teaching will lead to enhanced infrastructure within the PI's department and serve as an outreach program, for example, at the Central State University Chemistry Department and other schools in the region. Advancement of these students is expected to have a broad societal impact, complemented by the positive effect that the research outcomes are expected to have.