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.

在化学系中的大分子，超分子和纳米化学计划的支持下，西北大学的Teri W. Odom教授将开发方法来创建复杂的纳米结构，其表面特征类似于电晕的表面特征。这些电晕特征将通过结合自下而上的化学和自上而下的制造方法来制备。对冠状运动的几何形状和化学功能的控制有望改善设计器纳米结构的感应和量子技术的性质。接受该项目培训的学生将获得合成，纳米制作，建模和光谱工具的技能。外展活动将建立在图案纳米结构的良性和环保综合的基础上。 该项目旨在通过控制纳米级表面特征（电晕）在纳米颗粒支架上的生长来设计新的纳米材料异质结构。提出的工作旨在确定金属纳米颗粒支架的局部表面化学和反应性如何影响电晕的形成和功能。这三个目标包括（1）在具有不同结晶度的金纳米颗粒阵列上生长的纳米级冠的设计和原位表征； （2）基于催化材料和2D电子材料制备冠状； （3）将纳米级异质结构应用于增强的感应，光催化和光电子学。该奖项反映了NSF的法定任务，并被认为是通过基金会的智力优点和更广泛影响的审查标准通过评估来评估值得支持的。