ITR/SY(MPS): Molecular-Based Optical Detection of Weak Magnetic Fields

科罗拉多州立大学的C. Michael Elliott得到了信息技术研究（ITR）计划下化学系的支持，研究分子系统，这些分子系统在开发读取存储磁信息的新方法方面具有潜在的应用前景。将探索以改变瞬态光生电荷分离状态的衰变动力学形式对磁场表现出显著化学响应的新分子和分子系，以优化磁场响应系统。项目目标是：(1)了解这些新系统的结构特征如何与其电子转移动力学的磁场依赖性相关，特别是光诱导电荷分离态形成和重组的动力学；(2)了解分子设计是否与先前发现的组装在结构上不一定密切相关，是否会产生类似的场依赖性动力学响应；(3)研究反胶束是否可以作为这些体系的理想宿主。所研究的染料和材料的表征和分析将使用脉冲激光光谱，磁场效应实验和其他标准分析和材料分析方法进行。该研究项目具有明确的技术基础，其研究成果有可能推动基于光学的磁场传感器的发展。如果这项工作带来了可以用于读取磁数据的探测磁场的新方法，将会产生重大的实际和经济效益。

C. Michael Elliott of Colorado State University is supported by the Division of Chemistry under the Information Technology Research (ITR) program to study molecular systems that have potential application in developing fundamentally new ways of reading stored magnetic information. New molecules and molecular ensembles that exhibit significant chemical responses to magnetic fields in the form of changed decay kinetics of the transient, photogenerated charge-separated state will be explored to optimize the systems for magnetic field responses. Project goals are: (1) to develop an understanding of how structural features of these new systems are related to the magnetic field dependences of their electron-transfer kinetics, specifically the kinetics of photoinduced charge-separated state formation and recombination, (2) to learn if molecular designs not necessarily closely related in structure to previously discovered assemblies will give similar field dependence kinetic responses, and (3) to investigate whether reverse micelles can serve as satisfactory hosts for these systems. Characterization and analysis of the dyes and materials under study will be carried out using pulsed laser spectroscopy, magnetic field effect experiments, and other standard analytical and materials analysis methods.This research project has clear technological underpinnings, motivated by the potential for the research outcomes to enable development of optically based, magnetic field sensors. Significant practical and economic benefits will result if this work leads to fundamentally new ways of detecting magnetic fields that could be used to read magnetic data.