CAREER: Rational Design of Dual-Functional Photocatalysts for Synthetic Reactions: Controlling Photosensitization and Reaction with a Single Nanocrystal

职业：用于合成反应的双功能光催化剂的合理设计：用单个纳米晶体控制光敏化和反应

• 批准号: 2339866
• 负责人: Chen Wang
• 金额: $ 62.47万
• 依托单位: CUNY Queens College
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2024
• 资助国家: 美国
• 起止时间: 2024-03-01 至 2029-02-28
• 项目状态: 未结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=2339866&HistoricalAwards=false
• 关键词: CAREER; Rational; Design; Dual; Functional

With support from the Chemical Catalysis (CAT) program of the NSF Division of Chemistry, Dr. Chen Wang of the Department of Chemistry and Biochemistry at Queens College, City University of New York, is developing novel catalysts based on perovskite nanocrystals for utilizing light to efficiently synthesize organic chemicals that are essential in biomedical and pharmaceutical applications. The project will employ various spectroscopic methods to understand how photo-generated excited states in the nanocrystals can convert light energy and selectively promote the desired chemical processes on the nanocrystal surface. The project integrates synthetic chemistry, physical chemistry, materials science, and instrumentation development and hence will provide a multidisciplinary learning environment for students at all levels. Photochemical research will be introduced into the undergraduate curriculum to train students from diverse cultural backgrounds. Outreach activities, including photochemistry workshops and summer research camps, are planned to reach out to K-12 students and encourage a diverse, talented pool of students to consider pursuing studies in science, technology, engineering and mathematics fields.Photocatalytic synthesis has the potential to provide for streamlined, energy-efficient synthetic routes into useful molecules by providing novel bond construction manifolds. The proposed project will explore catalytic platforms with metal halide perovskite nanocrystals (PNCs) with the goals of achieving both efficient photosensitization and reaction control. The project will engineer the PNC surface will the goal of facilitating important synthetic reactions, such as cycloadditions and C-C coupling reactions, and with the goal of understanding the modified PNC surface through a combination of experimental and computational investigation. Surface photocatalytic processes will be tracked using a variety of ultrafast spectroscopic methods, including transient absorption, time-resolved photoluminescence, and time-resolved stimulated resonance Raman spectroscopy. This mechanistic study aims to reveal the relationship between the surface environment of PNCs and their catalytic performance to guide the rational design of novel photocatalysts based on semiconductor nanocrystals.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NSF化学司的化学催化（CAT）计划的支持下，纽约市皇后学院化学和生物化学系的陈·王（Chen Wang）正在开发基于钙钛矿纳米晶体的新型催化剂，用于利用光线有效合成有机化学物质，这些化学物质是必不可少的。该项目将采用各种光谱法来了解纳米晶体中的光电激发态如何转换光能并选择性地促进纳米晶表面上所需的化学过程。该项目整合了合成化学，物理化学，材料科学和仪器开发，因此将为各级学生提供多学科学习环境。光化学研究将被引入本科课程中，以培训来自不同文化背景的学生。计划宣传活动，包括光化学研讨会和夏季研究营，计划与K-12学生接触，并鼓励一群多样化，才华横溢的学生考虑在科学，技术，工程和数学领域进行研究。Photocatalyticsfieldsiss.photocatalytics综合有可能通过为精流，能源高效的合成途径提供有用的新颖的邦德构造。拟议的项目将探索具有金属卤化物钙钛矿纳米晶体（PNC）的催化平台，其目标是实现有效的光敏和反应控制。该项目将设计PNC表面的目的是促进重要的合成反应，例如环加成和C-C耦合反应，并通过实验和计算研究的结合来了解修改的PNC表面。表面光催化过程将使用多种超快光谱方法进行跟踪，包括瞬态吸收，时间分辨的光致发光以及时间分辨的刺激共振拉曼光谱。这项机械研究旨在揭示PNC的表面环境与它们的催化性能之间的关系，以指导基于半导体纳米晶体的新型光催化剂的合理设计。该奖项反映了NSF的法定任务，并通过该基金会的智力优点和广泛的影响来评估NSF的法定任务，并被认为是值得的。