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

RUI：基于 Verdazyl 自由基自组装的功能纳米结构

基本信息

批准号：
1058077
负责人：
David Brook
金额：
$ 24.9万
依托单位：
San Jose State University Foundation
依托单位国家：
美国
项目类别：
Continuing Grant
财政年份：
2011
资助国家：
美国
起止时间：
2011-09-15 至 2015-08-31
项目状态：
已结题

来源：
https://www.nsf.gov/awardsearch/showAward?AWD_ID=1058077&HistoricalAwards=false
关键词：
RUI Functional Nanostructures based self

项目摘要

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.

在这个由化学系化学结构、动力学和机理计划资助的RUI项目中，大卫教授J.R.圣何塞州立大学的布鲁克将研究Verdazyl自由基的配位化学，特别是它们与功能性自组装纳米结构的结合。Verdazyl自由基表现出一些最高的磁交换与配位离子的相互作用，并显示可逆的单电子氧化和还原，然而，报道的Verdazyl配位化合物的数量仍然相当低，金属自由基相互作用的性质是相对知之甚少。研究使用最近建立的方法合成的verdazyl自由基将调查的现象，如磁交换，自旋交叉，价互变异构。这些研究的技术和见解将用于开发能够自组装的多位Verdazyl配体，以产生具有新颖电子结构和磁性的功能纳米结构。在信息存储的背景下，我们将特别针对多稳态系统，其中分子可以通过物理或化学刺激在几种状态之间可逆地切换。我们预期一系列新的顺磁性配位体的开发在磁性化学和分子器件领域具有变革性的潜力。参与该项目的学生将使用广泛的实验技术，包括合成，NMR光谱，质谱，振动光谱，紫外-可见光谱，电化学，磁化学和X射线晶体学。研究的广度将允许MS水平的研究生，通过新生，甚至先进的高中学生的贡献。学生们预计将在地方，区域和国家会议上介绍他们的研究，除了参与准备出版的手稿。这些活动将增加我们的毕业生准备在研究生水平进一步研究或参与工业研究环境。