Spin Chemistry and Radical Dynamics in Confined Environments: From Nanocrystals to Nanobubbles

密闭环境中的自旋化学和自由基动力学：从纳米晶体到纳米气泡

• 批准号: 1111873
• 负责人: Matthew Redinbo
• 金额: $ 63.62万
• 依托单位: University of North Carolina at Chapel Hill
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2011
• 资助国家: 美国
• 起止时间: 2011-07-15 至 2016-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1111873&HistoricalAwards=false
• 关键词: Spin; Chemistry; Radical; Dynamics; Confined

The Chemical Structure, Dynamics and Mechanisms Program supports Professor Malcolm D. E. Forbes at the University of North Carolina- Chapel Hill who seeks to continue his exploration of radical chemistry and dynamics in confined environments. Using time-resolved and steady-state magnetic resonance techniques, he will carry out spectroscopy on free radicals, extracting g-factors, hyperfine coupling constants, and fine structure splittings. From line shape analyses and modeling of time-dependent spectra he will obtain dynamic information such as diffusion coefficients, rotational correlation times, and spin relaxation rates. His interests are broadly based in polymers and in nano-environments such as micelles and reverse micelles. In this work, activities are expanded to the study of nano- and microbubbles, nanocrystals, and polymer nanoparticles. The underlying theme is the control of radical reactions, not just in terms of reaction rates but also the control of radical location in organized assemblies. The results of this study will have potential utility for nanomedicine (photodynamic therapy), polymer synthesis (adhesion and coatings), polymer degradation (light pipes) and the development of new catalytic reactions (glycolization, water splitting, and CO2 reduction).With the support of the Chemical Structure, Dynamics and Mechanisms Program in the Chemistry Division at the National Science Foundation, Professor Malcolm D. E. Forbes will pursue a strategy of maintaining core competencies in spectroscopy and physical organic methodology as applied to kinetics, structure and mechanism. Professor Forbes' laboratory trains researchers in small molecule and polymer synthesis, structural analysis, photochemistry and laser spectroscopy, magnetic resonance (including microwave engineering), molecular and macromolecular dynamics, surface and colloid chemistry, and catalysis. The broader impacts of the proposed work are exemplified by continuing efforts in community outreach for science education, scientific interactions with the general public, international collaborations, and by addressing diversity in the field of chemistry.

化学结构，动力学和机制计划支持教授马尔科姆D。E.福布斯在北卡罗来纳州-查佩尔山大学谁寻求继续他的探索激进化学和动力学在密闭环境。使用时间分辨和稳态磁共振技术，他将进行自由基光谱学，提取g因子，超精细耦合常数和精细结构分裂。从线形分析和建模的时间依赖的光谱，他将获得动态信息，如扩散系数，旋转相关时间，和自旋弛豫率。他的兴趣广泛地基于聚合物和纳米环境，如胶束和反胶束。在这项工作中，活动扩展到纳米和微泡，纳米晶体和聚合物纳米粒子的研究。根本的主题是控制激进的反应，不仅在反应速率方面，而且在有组织的集会中控制激进的位置。这项研究的结果将有潜在的效用纳米医学（光动力疗法），聚合物合成（粘合和涂层），聚合物降解（光管）和新的催化反应（糖酵解，水裂解，和CO2还原）的发展。E.福布斯将奉行的战略，保持核心竞争力的光谱和物理有机方法，适用于动力学，结构和机制。福布斯教授的实验室培养研究人员在小分子和聚合物合成，结构分析，光化学和激光光谱，磁共振（包括微波工程），分子和大分子动力学，表面和胶体化学，催化。 拟议工作的更广泛影响体现在社区推广科学教育、与公众的科学互动、国际合作以及解决化学领域的多样性等方面的持续努力。