Chemical Guidelines for Predictive Materials Integration in Hybrid Nanoparticles

混合纳米粒子中预测材料集成的化学指南

• 批准号: 1707830
• 负责人: Raymond Schaak
• 金额: $ 50万
• 依托单位: Pennsylvania State Univ University Park
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2018
• 资助国家: 美国
• 起止时间: 2018-03-01 至 2023-02-28
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1707830&HistoricalAwards=false
• 关键词: Chemical; Guidelines; Predictive; Materials; Integration

Chemists draw diagrams that visually represent the application of important chemical and physical principles to a new idea or function, and then work to create the molecules and materials that make these designs a reality. For example, combining together catalysts and semiconductors at nanometer length scales can allow certain chemical reactions to occur when a light is turned on. While chemists can propose an almost limitless combination of materials that have potentially interesting and useful functions, it is not always easy to practically put together the materials in a way that enables these functions to be observed experimentally. Dr. Raymond Schaak, from the Pennsylvania State University University Park, is developing new capabilities for predictably combining materials and molecules at nanometer length scales. He is funded to identify new ways of creating interfaces between functional nanoscale materials using chemical reactions that couple together and transform nanoparticle building blocks. He is also studying important characteristics of these interfaces to better understand how targeted functions can be predictably achieved. Dr. Schaak is developing methods for depositing materials and molecules at precise locations on the surfaces of these coupled nanoparticle systems. The fundamental knowledge gained from this project helps to bridge the gap between what can be designed and what can be accessed experimentally for functional nanoscale materials of increasing chemical complexity. Dr. Schaak works on this research program with a diverse team of graduate and undergraduate students. He trains a diverse group of graduate and undergraduate students to develop, implement, and assess modular plug-and-play curricular materials (application-focused notes, case studies, collaborative problems, assessment tools) for contextualizing general chemistry units using cutting-edge research themes, impacting 2000 students initially plus many more through multipledissemination pipelines.In this research program, Dr. Schaak of Pennsylvania State University is supported by the Macromolecluar, Supramolecular and Nanochemistry (MSN) Pprogram to develop new chemical strategies for constructing multi-component hybrid nanoparticles that integrate functional materials through well-defined interfaces at precise locations. A suite of nanoparticle heterocoupling, chemical transformation, and phase segregation reactions decouple two competing synthetic bottlenecks, functional materials incorporation and interface control, to generate new hybrid nanostructures. Microscopic and spectroscopic studies complement the synthetic efforts to provide new insights into interfacial composition, structure, and morphology. Additional efforts to control metal and ligand deposition at precise locations on the hybrid nanoparticle surfaces add additional interfaces and capabilities for directional surface interactions. These new chemical capabilities and insights are important for predictably synthesizing functional hybrid nanostructures of increasing chemical complexity across a wide range of applications. Because they incorporate nanoscale interfaces, colloidal hybrid nanoparticles serve as discrete model systems for larger multi-component architectures such as fuel cells, solar cells, and lab-on-a-chip devices. Dr. Schaak works on this research program with a diverse team of graduate and undergraduate students. He and his students also develop new teaching tools to provide application-focused context to topics in large introductory chemistry courses.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.

化学家绘制图表，在视觉上代表重要的化学和物理原理应用于新的想法或功能，然后努力创造使这些设计成为现实的分子和材料。例如，将纳米尺度的催化剂和半导体结合在一起，可以在开灯时发生某些化学反应。虽然化学家可以提出几乎无限的材料组合，这些材料具有潜在的有趣和有用的功能，但实际上并不总是容易将这些材料组合在一起，使这些功能能够在实验中观察到。来自宾夕法尼亚州立大学大学公园的Raymond Schaak博士正在开发可预测地将纳米长度尺度的材料和分子结合起来的新能力。他被资助确定新的方法来创建功能纳米材料之间的界面，使用化学反应耦合在一起，并转换纳米颗粒构建块。他还在研究这些接口的重要特征，以更好地理解如何可预测地实现目标功能。Schaak博士正在开发将材料和分子沉积在这些耦合纳米颗粒系统表面精确位置的方法。从这个项目中获得的基本知识有助于弥合什么可以设计和什么可以实验获得的化学复杂性不断增加的功能纳米材料之间的差距。Schaak博士与一个由研究生和本科生组成的多元化团队一起从事这项研究计划。他培训了一批多样化的研究生和本科生，以开发、实施和评估模块化的即插即用课程材料（应用为重点的笔记，案例研究，协作问题，评估工具），用于使用前沿研究主题将普通化学单元置于情境中，最初影响2000名学生，再加上通过multipledissemination pipelines更多。在这个研究计划中，宾夕法尼亚州立大学的Schaak博士得到高分子、超分子和纳米化学（MSN）项目的支持，开发新的化学策略，用于构建多组分混合纳米颗粒，通过精确位置的明确界面整合功能材料。一套纳米粒子的异质耦合，化学转化和相分离反应解耦两个竞争的合成瓶颈，功能材料的掺入和界面控制，以产生新的混合纳米结构。显微镜和光谱研究补充了合成的努力，提供新的见解界面组成，结构和形态。在混合纳米颗粒表面上的精确位置处控制金属和配体沉积的额外努力增加了用于定向表面相互作用的额外界面和能力。这些新的化学能力和见解对于可预测地合成在广泛的应用中增加化学复杂性的功能性混合纳米结构是重要的。由于它们结合了纳米级界面，胶体混合纳米颗粒可用作较大的多组件架构（如燃料电池，太阳能电池和芯片实验室设备）的离散模型系统。 Schaak博士与一个由研究生和本科生组成的多元化团队一起从事这项研究计划。他和他的学生还开发了新的教学工具，为大型化学入门课程的主题提供以应用为中心的背景。该奖项反映了NSF的法定使命，并被认为值得通过使用基金会的智力价值和更广泛的影响审查标准进行评估来支持。

项目成果

Seeded Growth of Metal Nitrides on Noble-Metal Nanoparticles To Form Complex Nanoscale Heterostructures

• DOI: 10.1021/acs.chemmater.9b01638
• 发表时间: 2019-06-25
• 期刊: CHEMISTRY OF MATERIALS
• 影响因子: 8.6
• 作者: Lord, Robert W.;Holder, Cameron F.;Schaak, Raymond E.
• 通讯作者: Schaak, Raymond E.

Incorporation of Metal Phosphide Domains into Colloidal Hybrid Nanoparticles

将金属磷化物域掺入胶体杂化纳米颗粒中

• DOI: 10.1021/acs.inorgchem.0c03826
• 发表时间: 2021
• 期刊: Inorganic Chemistry
• 影响因子: 4.6
• 作者: Hernández-Pagán, Emil A.;Lord, Robert W.;Veglak, Joseph M.;Schaak, Raymond E.
• 通讯作者: Schaak, Raymond E.

Influence of Band Alignment on Electronic Relaxation in Plasmonic Metal–Semiconductor Hybrid Nanoparticles

• DOI: 10.1021/acs.jpcc.2c01378
• 发表时间: 2022-05
• 期刊: The Journal of Physical Chemistry C
• 作者: William R. Jeffries;A. Fagan;R. Schaak;K. Knappenberger

Interface-mediated noble metal deposition on transition metal dichalcogenide nanostructures

• DOI: 10.1038/s41557-020-0418-3
• 发表时间: 2020-02
• 期刊: Nature Chemistry
• 影响因子: 21.8
• 作者: Yifan Sun;Yuanxi Wang;Jamie Y. C. Chen;K. Fujisawa;Cameron F. Holder;Jeffery T. Miller;V. Crespi