Nanoscale Coronas: Surface Chemistry and Reactivity on Particle Scaffolds

纳米级电晕：粒子支架上的表面化学和反应性

• 批准号: 2305039
• 负责人: Teri Odom
• 金额: $ 50.09万
• 依托单位: Northwestern University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2023
• 资助国家: 美国
• 起止时间: 2023-07-01 至 2026-06-30
• 项目状态: 未结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=2305039&HistoricalAwards=false
• 关键词: Nanoscale; Coronas; Surface; Chemistry; Reactivity

With the support of the Macromolecular, Supramolecular and Nanochemistry Program in the Division of Chemistry, Professor Teri W. Odom at Northwestern University will develop approaches to create complex nanostructures whose surface features resemble that of a corona. These corona features will be prepared by combining bottom-up chemistry and top-down fabrication methods. Control over both the geometry and chemical functionality of the coronas is expected to improve the properties of the designer nanostructures for sensing and quantum technologies. Students trained on the project will gain skills in synthesis, nanofabrication, modeling, and spectroscopic tools. Outreach activities will build on the benign and environmentally friendly synthesis of the patterned nanostructures. This project aims to design new classes of nanomaterial heterostructures by controlling the growth of nanoscale surface features (a corona) on nanoparticle scaffolds. The proposed work is directed at establishing how local surface chemistry and reactivity of metal nanoparticle scaffolds affect corona formation and function. The three objectives include (1) the design and in situ characterization of nanoscale coronas grown on gold nanoparticle arrays with different crystallinity; (2) the preparation of coronas based on catalytic materials and 2D electronic materials; and (3) the application of the nanoscale heterostructures for enhanced sensing, photocatalysis, and optoelectronics.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.

在化学系大分子、超分子和纳米化学项目的支持下，Teri W。奥多姆在西北大学将开发方法来创建复杂的纳米结构，其表面特征类似于日冕。这些电晕特征将通过自下而上的化学和自上而下的制造方法相结合来制备。对冠状结构的几何形状和化学功能的控制有望改善用于传感和量子技术的设计师纳米结构的性能。在该项目上接受培训的学生将获得合成，纳米纤维，建模和光谱工具方面的技能。外联活动将建立在图案化纳米结构的良性和环境友好的合成上。 该项目旨在通过控制纳米颗粒支架上纳米级表面特征（电晕）的生长来设计新型纳米材料异质结构。拟议的工作是针对建立如何局部表面化学和反应性的金属纳米粒子支架影响电晕的形成和功能。本论文的三个主要目标是：（1）在不同结晶度的金纳米颗粒阵列上生长纳米级电晕的设计和原位表征;（2）基于催化材料和二维电子材料的电晕的制备;以及（3）纳米级异质结构在增强传感、测量该奖项反映了NSF的法定使命，并通过使用基金会的知识价值和更广泛的影响审查标准进行评估，被认为值得支持。