Star Porphyrazines

星形紫菜嗪

• 批准号: 0500796
• 负责人: Brian Hoffman
• 金额: $ 45万
• 依托单位: Northwestern University
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2005
• 资助国家: 美国
• 起止时间: 2005-09-15 至 2009-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0500796&HistoricalAwards=false
• 关键词: Star; Porphyrazines

Dr. Brian Hoffman, Department of Chemistry, Northwestern University, is supported by the Inorganic, Bioinorganic and Organometallic Chemistry Program of the Chemistry Division for work on star porphyrazines (pzs). Three general areas will be investigated. First, amino-functionalized pzs containing a core metal ion and metal-ions bound at the periphery will be used to define the systematics of heterometallic spin coupling and dithiolato-functionalized pzs will be used as the basis of pz assemblies and metal-linked pz ribbons that incorporate redox-switchable conduction and/or spin coupling. Secondly, pzs will be used to study fundamental questions about how molecular proximity/orientation to a metal surface influences interfacial charge injection, with possible applications as molecular electronic transport junctions, light emitting diodes and photovoltaic systems. Thirdly, the molecular optical transitions of porphyrazines adsorbed on Ag nanoparticles strongly couple to the particle localized surface plasmon resonances. This phenomenon will be explored and applied as chemical and biological optical nanosensors. The work supported by this award will have significant impact on a variety of scientific and technological applications. The class of compounds known as star porphyrazines will be highly useful as contrast agents in bio-imaging of tumors, and in such applications as dual opto/electrochemical metal-ion sensors. Pzs also hold promise of yielding dip-pen nanolithography "inks" that can be used to form patterns with controlled electrical properties on surfaces. Students and post-doctoral associates will gain fundamental and diverse skills not only in syntheses and physical characterization of these compounds, but also in exploring the potential application of the resulting products in nanotechnology, bio-imaging, and sensors.

布赖恩霍夫曼博士，化学系，西北大学，是由化学部的无机，生物无机和有机化学计划的支持工作的星星卟啉（pzs）。将调查三个一般领域。首先，含有核心金属离子和结合在外围的金属离子的氨基官能化的pz将用于定义异金属自旋耦合的系统学，并且二硫羟合官能化的pz将用作pz组装和金属连接的pz带的基础，这些pz组装和金属连接的pz带包含氧化还原可切换的传导和/或自旋耦合。其次，pzs将被用来研究关于分子接近/取向如何影响界面电荷注入的基本问题，可能的应用是分子电子传输结，发光二极管和光伏系统。第三，吸附在银纳米粒子上的卟啉的分子光学跃迁强烈耦合到粒子局域表面等离子体共振。这一现象将被探索并应用于化学和生物光学纳米传感器。该奖项所支持的工作将对各种科学和技术应用产生重大影响。这类被称为星星卟啉的化合物将在肿瘤的生物成像中作为造影剂，并在诸如双光/电化学金属离子传感器的应用中非常有用。压电陶瓷还有望产生蘸笔纳米光刻“墨水”，可用于在表面形成具有受控电特性的图案。学生和博士后将获得基本和多样化的技能，不仅在这些化合物的合成和物理表征，而且在探索所得产品在纳米技术，生物成像和传感器的潜在应用。