RUI: Functional Nanostructures based on the self assembly of Verdazyl Free Radicals

在这个由化学系化学结构、动力学和机制计划资助的RUI项目中，圣何塞州立大学的大卫·J·R·布鲁克教授将研究马鞭草自由基的配位化学；特别是它们融入到功能的、自组装的纳米结构中。Verdazyl自由基表现出与配位离子最高的磁交换作用，并表现出可逆单电子氧化和还原；然而，已报道的Verdazyl配位化合物的数量仍然很少，而且对金属-自由基相互作用的性质了解相对较少。用最近建立的方法合成的魔芋自由基的研究将研究诸如磁交换、自旋交叉、价互变等现象。来自这些研究的技术和见解将被用来开发能够自组装的多面体绿豆素配体，以产生具有新的电子结构和磁性的功能纳米结构。在信息存储的背景下，我们将特别致力于多稳定系统，其中分子可以通过物理或化学刺激在几个状态之间进行可逆切换。我们预计，一系列新的顺磁配体的开发将在磁化学和分子器件领域具有变革的潜力。参与该项目的学生将使用广泛的实验技术，包括合成、核磁共振光谱、质谱学、振动光谱、紫外可见光谱、电化学、磁化学和X射线结晶学。这项研究的广度将允许MS水平的研究生，到大一学生，甚至高中生做出贡献。除了参与准备出版手稿外，学生还应在地方、地区和国家会议上介绍他们的研究成果。这些活动将增加我们的毕业生为研究生水平的进一步学习或参与工业研究环境做准备。

In this RUI project funded by the Chemical Structure, Dynamics, and Mechanisms Program of the Chemistry Division, Professor David J. R. Brook of San José State University will investigate the coordination chemistry of verdazyl free radicals; in particular their incorporation into functional, self assembled nano-structures. Verdazyl radicals exhibit some of the highest reported magnetic exchange interactions with coordinated ions and show reversible one electron oxidation and reduction; however, the number of reported verdazyl coordination compounds is still rather low and the nature of the metal-radical interaction is relatively poorly understood. Studies of verdazyl radicals synthesized using recently established methods will investigate phenomena such as magnetic exchange, spin crossover, valence tautomerization. Techniques and insight from these studies will be used to develop polytopic verdazyl ligands capable of self assembly to produce functional nanostructures with novel electronic structure and magnetic properties. In the context of information storage we will particularly aim for multistable systems where the molecule may be reversibly switched between several states by physical or chemical stimuli. We anticipate that the development of a new series of paramagnetic ligands has transformative potential in the area of magnetochemistry and molecular devices.Students involved in this project will use a broad range of experimental techniques including synthesis, NMR spectroscopy, mass spectrometry, vibrational spectroscopy, UV-vis, electrochemistry, magnetochemistry and X-ray crystallography. The breadth of the research will allow contributions from MS level graduate students, through freshmen and even advanced high school students. Students are expected to present their research at local, regional and national meetings, in addition to participation in preparation of manuscripts for publication. These activities will increase our graduates preparation for further study at the graduate level or participation in an industrial research setting.