International Research Fellowship Program: Synthesis of Novel Magnetic Nanoparticles Engineered with Polymeric Micellar Templates

0207035哈里斯国际研究奖学金计划使美国科学家和工程师能够在国外进行三到二十四个月的研究。 该计划的奖项提供了联合研究的机会，以及使用独特或互补的设施，专业知识和国外的实验条件。该奖项将支持博士琳达A。哈里斯与蒂姆·G博士合作。圣皮埃尔在西澳大利亚大学在澳大利亚珀斯。该项目由数学和物理科学理事会多学科活动办公室提供支持。该项目的目标是制备封装在有机鞘中的定义明确的孤立磁性纳米颗粒，并将其用作理解纳米磁性行为的模型。 具有明确结构特征的磁性纳米颗粒的可用性是理解结构-磁性行为关系的主要障碍。 PI将合成一系列聚合物，这些聚合物将作为纳米反应器，用于控制氧化铁纳米颗粒的形成。 这些定义明确的材料将作为模型来测试约束聚合物胶束可以控制氧化铁纳米颗粒的尺寸和形态的假设。 这些方法将用于合成在颗粒表面或核心处选择性地用57 Fe标记的氧化铁纳米颗粒。 区分表面与核心将允许通过穆斯堡尔谱进行颗粒子结构表征，以实现纳米磁性行为和结构之间的相关性。圣皮埃尔教授在合成和生物磁性材料的研究方面拥有十多年的经验，特别关注氧化铁。

0207035HarrisThe International Research Fellowship Program enables U.S. scientists and engineers to conduct three to twenty-four months of research abroad. The program's awards provide opportunities for joint research, and the use of unique or complementary facilities, expertise and experimental conditions abroad.This award will support an eighteen month research fellowship by Dr. Linda A. Harris to work with Dr. Tim G. St. Pierre at the University of Western Australia in Perth, Australia. Support for this project is from the Math and Physical Sciences Directorate's Office of Multidisciplinary Activities.The goal of this project is to prepare well-defined isolated magnetic nanoparticles encapsulated in an organic sheath, and to use these as models for understanding nanomagnetic behavior. The availability of magnetic nanoparticles with well-defined structural features is a major hurdle in understanding structure-magnetic behavior relationships. The Pis will synthesize a series of polymers that will serve as nanoreactors for the controlled formation of iron oxide nanoparticles. These well-defined materials will function as models to test the hypothesis that constrained polymer micelles can control the size and morphology of iron oxide nanoparticles. These methods will be used to synthesize iron oxide nanoparticles selectively labeled with 57 Fe at either the particle surface or core. Differentiating the surface vs. core will allow particle sub-structure characterization by Mossbauer spectroscopy to enable correlations between nanomagnetic behavior and structure.Professor St. Pierre has over a decade of experience in the study of synthetic and biogenic magnetic materials with a particular focus on iron oxides.