CAREER: Leveraging Atomically-Precise Inorganic Clusters to Understand Nanoparticle Synthesis

职业：利用原子级精确的无机簇来理解纳米粒子的合成

• 批准号: 2145500
• 负责人: Matthew Jones
• 金额: $ 65.75万
• 依托单位: William Marsh Rice University
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2022
• 资助国家: 美国
• 起止时间: 2022-07-01 至 2027-06-30
• 项目状态: 未结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=2145500&HistoricalAwards=false
• 关键词: CAREER; Leveraging; Atomically; Precise; Inorganic; CAREER; Leveraging; Atomically; Precise; Inorganic

With the support of the Macromolecular, Supramolecular and Nanochemistry Program in the Division of Chemistry, Dr. Matthew Jones of Rice University will explore the fundamental processes underlying the formation of metallic nanoparticles. These structures, approximately ten thousand times smaller than the width of a human hair, exhibit remarkable optical and catalytic properties that may form the basis for future technologies in biomedicine, energy storage, and computing. With this funding, Dr. Jones will expand the understanding of metallic nanoparticle formation by “seeding” their growth with smaller molecules that are atomically well-defined. Coupled to these scientific goals is a program of educational outreach that aims to improve the diversity of the nation’s STEM workforce by partnering with a local high school in Houston that caters exclusively to underserved immigrant and refugee communities. Science teachers at this school will take part in a funded summer research internship in the Jones laboratory while the students in the classrooms of these teachers will be engaged by Dr. Jones’ nanoscience outreach group via laboratory exercises and demonstrations. By creating a program that integrates the training of underrepresented students and teachers with the resources of Rice University, a pipeline of diverse, STEM-educated students will be generated who can serve the workforce needs of the 21st century.The Jones research group will explore the mechanisms underlying the seed-mediated synthesis of anisotropic gold nanoparticles by developing a research program that aims to characterize growth dynamics occurring at the ~1 nm length scale. This work seeks to uncover cluster-based mechanisms for nanoparticle growth to help develop nanoscale synthesis into a more chemically-predictable science. In objective 1, a library of atomically-precise nanoclusters of differing size, symmetry, and ligand composition are to be synthesized and characterized. In objective 2, the inter- and intra-cluster growth, dissolution, and coalescence processes that result in a redistribution of the cluster population in different chemical environments will be studied. Finally, in objective 3, the role that cluster-based reactivity plays in defining the symmetry and morphology of nanoparticles grown from these precursors will be examined carefully with an eye toward establishing new approaches to predicting nanoparticle structure based upon reactivity and growth mechanism.This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.

在化学系中的大分子，超分子和纳米化学计划的支持下，赖斯大学的Matthew Jones博士将探索金属纳米颗粒形成的基本过程。这些结构比人头发的宽度小约一千倍，暴露了出色的光学和催化特性，这些特性可能构成生物医学，能源储能和计算中未来技术的基础。通过这笔资金，琼斯博士将通过用原子良好定义的较小分子“播种”其生长来扩展对金属纳米颗粒形成的理解。加上这些科学目标是一项教育宣传计划，旨在通过与休斯敦的一所当地高中合作，专门针对服务不足的移民和难民社区，以改善国家STEM劳动力的多样性。这所学校的科学老师将参加琼斯实验室的资助夏季研究实习，而这些老师的教室的学生将通过琼斯博士的纳米科学外展小组通过实验室练习和示威活动来参与。 By creating a program that integrates the training of underrepresented students and teachers with the resources of Rice University, a pipeline of divers, STEM-educated students will be generated who can serve the workforce needs of the 21st century.The Jones research group will be Explore the mechanisms underlying the seed-mediated synthesis of anisotropic gold nanoparticles by developing a research program that aims to characterize growth dynamics occur at the ~1 nm length scale.这项工作旨在发现基于集群的纳米颗粒生长机制，以帮助将纳米级合成发展为更具化学可预测的科学。在目标1中，将研究一个具有分化尺寸，对称性和配体组成的原子纳米簇的库，群间和内部和内部内的生长，溶解和合并过程，从而导致不同化学环境中簇种群重新分布。最后，在目标3中，将仔细检查从这些前体生长的纳米颗粒的对称性和形态在定义基于反应性和增长机制基于反应性和增长机制的纳米颗粒结构的新方法的作用。这是NSF的法定任务通过评估构成的范围，以表明纳米粒子结构的良好影响。