Chemical Triggers for Spin-State Switching: Fundamental Studies Toward Anion Receptors

自旋态转换的化学触发：阴离子受体的基础研究

• 批准号: 1058889
• 负责人: Matthew Shores
• 金额: $ 38.3万
• 依托单位: Colorado State University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2011
• 资助国家: 美国
• 起止时间: 2011-10-01 至 2015-09-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1058889&HistoricalAwards=false
• 关键词: Chemical; Triggers; Spin; State; Switching

In this project funded by the Chemical Structure, Dynamics and Mechanism Program of the Chemistry Division, Matthew Shores of Colorado State University will combine synthetic and measurement techniques to control electron spin in molecular species via non-covalent interactions. Fe(II) coordination complexes will be probed by solution methods to understand - at the microscopic level - how their spin states are influenced by outer sphere interactions with anions. These insights will inform the exploration of metal-ligand architectures where, in polar solvents, a change in complex spin state robustly signals the presence of an anionic species. Among the broader impacts of the research, diverse training in synthesis, spectroscopy, X-ray crystallography, and magnetometry will be offered; a new class of colorimetric sensors for anions of biological and/or environmental significance will be developed; and research opportunities for undergraduate students will be enhanced by close association with and support of the CSU chemistry REU program.This project intends to expand the methods by which colorless anions can be detected, by taking advantage of the propensity of certain metal complexes to switch their color and magnetic and physical properties as a result of small environmental changes. Sensing of anions under controlled, anaerobic conditions has been developed. This research aims to achieve robust sensing in water, a key goal in this field. A direct result of the research and educational activities will be manifested in the quality of training that graduate and undergraduate students obtain in the synthesis and characterization of compounds. More generally, the research will aid in developing fundamental understandings of molecular switching, and will contribute to improved imaging, data storage, and display devices.

在这个由化学部化学结构、动力学和机制项目资助的项目中，科罗拉多州立大学的马修·肖尔斯将联合收割机合成和测量技术相结合，通过非共价相互作用控制分子物种中的电子自旋。Fe（II）配位络合物将通过溶液方法进行探测，以在微观水平上了解它们的自旋状态如何受到外层与阴离子相互作用的影响。这些见解将通知金属配体架构的探索，在极性溶剂中，复杂的自旋状态的变化强烈信号的阴离子物种的存在。在研究的广泛影响中，将提供合成、光谱学、X射线晶体学和磁力学方面的各种培训;将开发一类新的具有生物和/或环境意义的阴离子比色传感器;和本科生的研究机会将通过与CSU化学REU计划的密切联系和支持来增强。该项目旨在扩大方法，通过利用某些金属络合物由于微小的环境变化而改变其颜色和磁性及物理性质的倾向，可以检测无色阴离子。已开发出在受控厌氧条件下感测阴离子的方法。这项研究旨在实现水的鲁棒传感，这是该领域的一个关键目标。研究和教育活动的直接结果将体现在研究生和本科生在化合物的合成和表征方面获得的培训质量。更一般地说，这项研究将有助于发展对分子开关的基本理解，并将有助于改进成像，数据存储和显示设备。