Star Porphyrazines, Solitaire Phthalocyanines and Related Multimetallic Macrocycles

星形紫菜嗪、Solitaire 酞菁及相关多金属大环化合物

• 批准号: 9727590
• 负责人: Brian Hoffman
• 金额: $ 50.5万
• 依托单位: Northwestern University
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1998
• 资助国家: 美国
• 起止时间: 1998-02-15 至 2001-01-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9727590&HistoricalAwards=false
• 关键词: Star; Porphyrazines; Solitaire; Phthalocyanines; Related

Dr. Brian M. Hoffman, Chemistry Department, Northwestern University, is supported by the Inorganic, Bioinorganic, and Organometallic Chemistry Program of the Chemistry Division for a collaborative project with Dr. Anthony G. M. Barrett, Chemistry Department, Imperial College of Science and Technology, London, England, aimed at synthesis and study of star porphyrazines, solitaire phthalocyanines and related multimetallic macrocycles. A series of porphyrazines that are peripherally substituted with heteroatoms will be synthesized. These will be converted into complexes with metals bound to the peripheral heteroatoms and to the core of the central macrocycle. Extended arrays will be formed by connecting several of the metalla-porphyrazine units through peripheral metal bridges. The resultant complexes will have unusual spectroscopic, magnetic, or electrical properties properties due to electron delocalization and metal-metal interactions through the macrocyclic pi-system. Compounds which contain several metals often have unique magnetic and electronic properties. In this project a series of such materials will be prepared. The specific design involves a central metal which is surrounded by a rigid structure of other atoms (a macrocyclic ligand) to which additional metals are attached. This results in star-shaped or linear arrays of metal atoms. These are expected to have a diversity of applications including biomedical optical imaging, optical sensors, the separation of chiral substances, and catalysis. The project involves the collaboration between a group in England, where the macrocylic ligands will be prepared, and one at Northwestern University, which will be responsible for the conversion of the ligands into metal complexes. Students will be exchanged between the groups and thus will receive an extremely broad training in synthetic organic and metal chemistries. The collaboration also provides the opportunity for US students to experience the international aspects of modern science.

西北大学化学系的 Brian M. Hoffman 博士得到了化学系无机、生物无机和有机金属化学项目的支持，与帝国理工学院化学系的 Anthony G. M. Barrett 博士合作开展了一个项目，英国伦敦，旨在合成和研究星形紫菜嗪、单粒酞菁和相关多金属大环化合物。将合成一系列外围被杂原子取代的四氮杂卟啉。这些将转化为与外围杂原子和中央大环核心结合的金属的络合物。通过外围金属桥连接几个金属-四氮杂卟啉单元将形成扩展阵列。由于电子离域和通过大环 pi 系统的金属-金属相互作用，所得配合物将具有不寻常的光谱、磁性或电学特性。 含有多种金属的化合物通常具有独特的磁性和电子特性。在这个项目中，将准备一系列此类材料。具体设计涉及中心金属，该中心金属被其他原子（大环配体）的刚性结构包围，其他原子附着在其他原子上。这导致金属原子呈星形或线性阵列。这些预计将具有多种应用，包括生物医学光学成像、光学传感器、手性物质的分离和催化。该项目涉及英国的一个小组和西北大学的一个小组之间的合作，其中英格兰的一个小组将制备大环配体，该小组将负责将配体转化为金属配合物。 学生将在小组之间交换，从而接受合成有机和金属化学方面极其广泛的培训。此次合作还为美国学生提供了体验现代科学国际化的机会。