CAREER: Surface Chemistry-Controlled Formation of Colloidal Nanoparticle Alloys

职业：表面化学控制胶体纳米颗粒合金的形成

• 批准号: 1253143
• 负责人: Jill Millstone
• 金额: $ 60万
• 依托单位: University of Pittsburgh
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2013
• 资助国家: 美国
• 起止时间: 2013-02-01 至 2018-12-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1253143&HistoricalAwards=false
• 关键词: CAREER; Surface; Chemistry; Controlled; Formation

The Macromolecular, Supramolecular, and Nanochemistry (MSN) program of the Division of Chemistry will support the CAREER research and education program of Prof. Jill Millstone at the University of Pittsburgh. Prof. Millstone and her students will develop surface-chemistry driven methods for preparing a broad range of transition and noble metal nanoparticle alloys. These alloys exhibit unique optical, magnetic, and catalytic behaviors that make them attractive for technologies ranging from near-infrared (NIR) imaging to heterogeneous catalysis. Prof. Millstone and her students will investigate the impact of particle-ligand interactions, intermolecular ligand forces, and solvent-ligand chemistry to tune both the atomic composition and atom distribution throughout the nanoparticle. The role of ligand species will be tracked by combining standard nanoparticle analysis techniques such as electron microscopy with classic molecular characterization approaches such as nuclear magnetic resonance spectroscopy (NMR), where NMR allows one to simultaneously acquire detailed information about both nanoparticle surface and ligand environments. Successful completion of the proposed study will introduce a synthetic framework that bridges molecular and bulk descriptions of alloy formation and provides a straightforward, sustainable route to a previously inaccessible class of homogeneous-alloy nanostructures. These well-defined architectures then provide promising platforms for applications ranging from fossil fuel conversion to cancer detection. The CAREER educational plans of Prof. Millstone focus on the development of a Wikipedia-style website devoted to nanochemistry. This website will act as a "living" resource for a broad community of students and faculty who are interested in learning, teaching, or performing nanomaterial synthesis but who have limited access to the expertise necessary to begin their involvement productively.

化学系的大分子，超分子和纳米化学（MSN）计划将支持匹兹堡大学Jill Millstone教授的职业研究和教育计划。Millstone教授和她的学生将开发表面化学驱动的方法，用于制备各种过渡金属和贵金属纳米颗粒合金。这些合金表现出独特的光学，磁性和催化行为，使它们对从近红外（NIR）成像到多相催化的技术具有吸引力。Millstone教授和她的学生将研究粒子-配体相互作用，分子间配体力和溶剂-配体化学的影响，以调整整个纳米粒子的原子组成和原子分布。配体物种的作用将通过结合标准的纳米粒子分析技术，如电子显微镜与经典的分子表征方法，如核磁共振光谱（NMR），其中NMR允许同时获得有关纳米粒子表面和配体环境的详细信息来跟踪。 拟议研究的成功完成将引入一个合成框架，该框架将合金形成的分子和本体描述连接起来，并为以前无法访问的一类非晶合金纳米结构提供一条直接的，可持续的路线。这些定义明确的架构为从化石燃料转换到癌症检测的应用提供了有前途的平台。Millstone教授的职业教育计划专注于开发一个致力于纳米化学的维基百科式网站。这个网站将作为一个“活”的资源，为广大社区的学生和教师谁有兴趣在学习，教学，或执行纳米材料合成，但谁有有限的访问所需的专业知识，开始他们的参与富有成效。