Ultrafast dynamics, mechanism, and linkage isomerization of photosensitive organometallic manganese and chromium complexes

光敏有机金属锰铬配合物的超快动力学、机理和键异构化

• 批准号: 0911528
• 负责人: Theodore Burkey
• 金额: $ 39万
• 依托单位: University of Memphis
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2009
• 资助国家: 美国
• 起止时间: 2009-08-01 至 2013-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0911528&HistoricalAwards=false
• 关键词: Ultrafast; dynamics; mechanism; linkage; isomerization

This Research award in the Inorganic, Bioinorganic and Organometallic Chemistry program supports work by Professors Theodore Burkey and Charles Edwin Webster at the University of Memphis to develop photochromic compounds based on the a migration a transition metal between functional groups. The synthesis of organometallic compounds with functional groups located at key positions relative to the metal provides a means to investigate how a metal can migrate between the functional groups as a mechanism for color change. Studies of new organometallic photochromic complexes reveal how structural changes 1) improve the yield per photon, 2) increase rates of the color change caused by the metal migration, and 3) reduce side reactions such as recombination or solvation that interfere with the metal migration. The structural changes include functional groups, the bridge between the metal and functional group, and the bridge between functional groups. This project trains students and postdoctoral fellows important to the infrastructure of academic, government, and industrial institutions in collaborative experimental and computational research. This project increases the participation of underrepresented groups in chemistry in our Minority Undergraduate Mentoring and Immersion in Research, American Chemical Society Project SEED (Summer Research Internship Program for Economically Disadvantaged High School Students), and National Organization of Black Chemists and Chemical Engineers at the University of Memphis. Faster, more stable, and more efficient photochromic organometallics are required in practical applications of photochromic materials, which have established or potential use in data storage, optical switches, microfluidic devices, photoacuators, and smart windows.

无机化学、生物无机化学和金属有机化学项目的这项研究奖支持孟菲斯大学的Theodore Burkey和Charles Edwin Webster教授基于官能团之间的过渡金属迁移开发光致变色化合物的工作。具有相对于金属的关键位置的官能团的有机金属化合物的合成提供了一种方法来研究金属如何在官能团之间迁移作为颜色变化的机制。对新的有机金属光致变色配合物的研究揭示了结构变化如何：1)提高每光子产额，2)增加金属迁移引起的变色速率，3)减少干扰金属迁移的副反应，如复合或溶剂化。结构变化包括官能团、金属与官能团之间的桥梁、官能团之间的桥梁。这个项目培训学生和博士后研究员，在合作实验和计算研究中，对学术、政府和工业机构的基础设施至关重要。该项目增加了少数族裔本科生辅导和沉浸研究、美国化学学会SEED(针对经济困难高中生的暑期研究实习计划)和孟菲斯大学黑人化学家和化学工程师全国组织的化学专业代表不足的群体的参与。在光致变色材料的实际应用中，需要更快、更稳定、更高效的光致变色有机金属材料，这些材料已经在数据存储、光学开关、微流控器件、光声器件和智能窗口中得到了或潜在的应用。