Metalloporphyrin-Based Magnetic Materials

这一奖项授予犹他大学，以支持乔尔·米勒教授的研究，并得到化学系先进材料计划的支持。这项研究涉及金属卟啉基磁性材料的设计、合成、表征和性能。研究的主要目标是了解控制有机基磁体行为的基础科学，识别新的磁性现象，并制造具有增强和可控制的临界温度和矫顽场的有机基磁体。本研究将阐明一维锰-卟啉-四氰乙烯体系的结构-功能关系，包括金属原子的作用、压力依赖性、光磁响应以及卟啉配体外围自旋的作用。一维体系将通过共价键和超分子氢键四苯基卟啉扩展到二维和三维。基于能够结合两个锰单元的新型自由基离子受体，将制备新类型的磁体。这项研究的一个特点是在结构和性能测量以及计算建模方面与专家进行广泛的合作。这项研究将提供对分子和超分子有机磁体中磁性行为的基本了解，并提供更温度稳定的高场磁体。可溶性分子磁体将推动薄膜磁光应用的发展。与国际化学家和物理学家的合作将为学生提供强有力的跨学科培训。

This award, made to the University of Utah in support of Professor Joel Miller's research is supported by the Advanced Materials Program in the Chemistry Division. The research deals with the design, synthesis, characterization and properties of metalloporphyrin-based magnetic materials.The broad goals of the research are to understand the fundamental science that governs behavior in organic-based magnets, to identify new magnetic phenomena, and to to make organic-based magnets with enhanced and controllable critical temperatures and coercive fields. The research will elucidate structure-function relationships in the one dimensional manganeseporphyrin-tetracyanoethylene system including the role of the metal atoms, the pressure dependence, the photomagnetic response and the role of spins on the periphery of the porphyrin ligand. The one dimensional systems will be extended to two and three dimensions by covalent bonding and by supramolecular hydrogen bonded manganotetraphenylporphyrins. New types of magnets will be prepared based on new classes of radical-ion acceptors capable of binding two manganese moieties. A feature of the research will be extensive collaborations with experts for structural and performance measurements and for computational modeling.This research will provide a fundamental understanding of magnetic behavior in molecular and supramolecular organic magnets as well as provide more temperature-stable, higher field magnets. Soluble molecular magnets will advance thin film magneto-optical applications. Collaborations with international chemists and physicists will provide strong interdisciplinary training for students.