Molecule-based Magnets Based on Dinuclear Metal Tetracarboxlates

犹他州大学化学系的Joel米勒博士得到化学系无机、生物无机和有机物化学项目的支持，研究有机和分子基磁体，该磁体由两种互穿晶格组成，一种由混合价阳离子钌羧酸盐组成，另一种由阴离子六氰基或硫氰酸盐组成。该研究的广泛目标是了解控制有机磁体行为的基础科学，识别新的磁性现象，并使有机磁体具有增强和可控的临界温度和矫顽场。首先，将研究基于S = 3/2混合价钌（II/III）羧酸盐的双金属氧化物。我们的目标是了解这些系统的互穿晶格的磁性后果。该项目将扩展到阴离子S = 2 Ru（III）和S = 3/2 Ru（II/III）硫酸盐和碳酸盐，Fe和Os类似物，以及这些金属的较不常见的氧化态。最终目标是开发新的磁有序材料，这些材料具有经典磁体所没有的性能组合。这项研究将为分子和超分子有机磁体的磁行为提供基本的理解，并提供更稳定的温度，更高的磁场磁体。可溶性分子磁体将促进薄膜磁光应用。与国际化学家和物理学家的合作将为学生提供强大的跨学科培训。

Dr. Joel Miller, Chemistry Department, University of Utah, is supported by the Inorganic, Bioinorganic, and Organometallic Chemistry Program of the Chemistry Division for the study of organic- and molecule based magnets (mbms) that consist of two interpenetrating lattices, one being composed of a mixed valent, cationic ruthenium carboxylate and the other an anionic hexacyano- or thiocyanatometalate. 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 make organic-based magnets with enhanced and controllable critical temperatures and coercive fields. Initially, mbms based on S = 3/2 mixed-valent ruthenium(II/III) carboxylates will be studied. The goal is to understand the magnetic consequences of the interpenetrating lattices for these systems. The project will be extended to anionic S = 2 Ru(III) and S = 3/2 Ru(II/III) sulfate and carbonates, to Fe and Os analogues, and to less common oxidation states of these metals. The ultimate objective is the development of new magnetically ordered materials with combination of properties not observed for classical magnets.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 a strong interdisciplinary training for students.