Channeling Excited States Towards New Productive Photochemical Pathways

将激发态引导至新的高效光化学途径

• 批准号: 2350308
• 负责人: Jayaraman Sivaguru
• 金额: $ 51.9万
• 依托单位: Bowling Green State University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2024
• 资助国家: 美国
• 起止时间: 2024-08-01 至 2027-07-31
• 项目状态: 未结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=2350308&HistoricalAwards=false
• 关键词: Channeling; Excited; States; Towards; New; Channeling; Excited; States; Towards; New

With support from the Chemical Structure, Dynamics and Mechanism-B (CSDM-B) program, Professor Jayaraman Sivaguru and his group at Bowling Green State University aim to discover new and productive photochemical pathways which result from the selective modification of chemical structure. These new photoreactions are designed to have applications in sustainable chemical synthesis. Photochemistry is the science of chemical reactions that are initiated by light, and which proceed through highly energetic excited states. The proposed investigations will enable training of students in concepts related to photochemistry, photophysics and physical organic chemistry and intellectually impact their understanding related to synthesis, nanoscience, and materials science. This research program integrates scientific research with educational training and outreach through engagement and collaboration. Professor Sivaguru and his team will continue to engage in a myriad of outreach activities that go beyond academics and scientific training. These outreach activities include the PICNICS (Parents Involvement with Children, Nurturing Intellectual Curiosity in Science) program, and engaging the community through the Saturday Seminar Series that has both national and international reach. The PICNICS program is conducted in collaboration with northwest Ohio high schools, engaging high school students through summer internships to positively influence their undergraduate career path.This project aspires to foster creativity by uncovering new photochemical reactions. This will be done by channeling excited state reactivity through the exploitation of photochemical principles to (i) uncover novel reactivity that is unique to photoreactions; (ii) employ modern photochemical/photophysical tools to in an effort to develop comprehensive knowledge about excited state processes; and (iii) explore the importance of dynamics and lifetimes of excited states, as well as the stability of transient intermediates. Structural modification is designed to uncover new photoreactivity, achieve regio-, stereo- and chemoselectivity and lead to a more comprehensive mechanistic model. All the above strategies seek to unearth new excited state pathways/reactivity are grounded in well- established photochemical principles. Realizing the full potential of the proposed strategies rely on juxtaposing the delicate balance between dynamics and lifetimes of the excited states with molecular features that transpire as photochemical control of reactivity.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.

在化学结构，动力学和机构-B（CSDM-B）计划的支持下，Jayaraman Sivaguru教授及其在鲍林绿色州立大学的小组旨在发现由化学结构选择性修改导致的新的和生产的光化学途径。这些新的光反应旨在在可持续化学合成中应用。 光化学是通过光引发的化学反应科学，并通过高能激发态进行。拟议的调查将使学生能够接受与光化学，光体物理学和物理有机化学有关的概念的培训，并在智力上影响其与合成，纳米科学和材料科学有关的理解。该研究计划通过参与和协作将科学研究与教育培训和宣传。 Sivaguru教授和他的团队将继续进行无数的外展活动，这些活动超出了学术和科学培训。这些外展活动包括野餐（父母与孩子的参与，培养科学中的智力好奇心），以及通过具有国家和国际范围的星期六研讨会系列来吸引社区。野餐计划是与西北俄亥俄州高中合作进行的，通过暑期实习与高中生一起吸引了高中生，以积极影响其本科职业道路。该项目渴望通过发现新的光化学反应来促进创造力。这将通过通过将光化学原理的利用传递到（i）发现光反应独有的新型反应性来实现激发状态的反应性来完成。 （ii）使用现代的光化学/光物理工具来努力发展有关激发状态过程的全面知识； （iii）探讨激发态动力学和寿命的重要性，以及瞬时中间体的稳定性。 结构修饰旨在发现新的光电反应性，实现区域，立体和化学选择性，并导致更全面的机械模型。上述所有策略都试图发掘新的激发状态途径/反应性，均基于良好的光化学原理。意识到拟议策略的全部潜力取决于将激发态的动态和生命寿命之间的微妙平衡与分子特征置于对反应性的光化学控制方面，这反映了NSF的法定任务，并被认为是值得通过基金会的知识绩效和更广泛影响的审查审查的审查标准来通过评估来通过评估来支持的。