稀土-过渡有机杂金属超分子的程序自组装与光电分子器件

项目名称： 稀土-过渡有机杂金属超分子的程序自组装与光电分子器件

项目编号： No.21471011

项目类型： 面上项目

立项/批准年度： 2015

项目学科： 数理科学和化学

项目作者： 于澍燕

作者单位： 北京工业大学

项目金额： 80万元

中文摘要： 本项目旨在设计合成同体异功能的吡唑基-穴醚，吡唑基-β-二酮，吡唑基-邻二萘酚等多功能配体，与稀土和过渡金属离子在可控分步程序化条件下，自组装形成稀土-过渡科顿-维尔纳型有机杂金属功能超分子，探讨分级、自分类的多层次自组装机理，测试光电功能和磁性，探讨作为分子器件应用前景。本项目的创新和挑战在于将d-f壳层不同类金属同时引入到超分子自组装体系中，发展出程序化（分级或自分类）的多级多层次自组装化学，制备出结构新颖、功能可调的d-f杂电子相关的有机杂金属超分子，由稀土和过渡金属离子之间相互调控超分子光、电、磁功能。与过渡金属不同的是，稀土离子的配位数和对称性难于控制，水解pH范围窄，这种杂金属超分子的自组装合成方法存在严重挑战。根据过渡金属配合物和稀土金属配合物对配体软硬酸碱识别原理，我们设计新颖的同体异功能吡唑基有机配体，为程序可控分级分类的稀土-过渡有机杂金属超分子自组装化学奠定了基础。

中文关键词： 稀土-过渡；有机杂金属；科顿-维尔纳型；超分子自组装；分子器件

英文摘要： This project aims at the design and synthesis of novel pyrazolyl-cryptate, pyrazolyl-β-diketone and pyrazolyl-dihydroxynaphthalene bifunctional ligands which may programmably self-assemble with rare earths and transition metals simultaneously to construct the rare earths-transition metals organo-heterometallic Cotton-Werner type functional supramolecules. The mechanism of the controllably multistep self-sorting or self-assembly processes will be probed and the optical, electric or magnetic properties of these molecular devices will be studied. The challenge and innovation of the program is simultaneously introducing different d-f shelled metals into these supramolecular systems with novel structures and optical, electric or magnetic properties that mutually tuned via rare earths-transition metals and developing programmably multistep self-sorting or self-assembly chemistry. Unlike the transition metals, it is very challenging to synthesise these d-f organo-heterometallic supramolecules because of the larger coordination number , more complicated structural symmetry and narrower hydrolyzing pH range of the rare earths. Based on the theory of hard and soft acids (HSAB), we design these bifunctional pyrazolyl ligands and lay a foundation of programmable rare earths-transition metals organo-heterometallic supramolecules self-assembly chemistry.

英文关键词： Rear Earths - Transition Metals;Organo - Heterometallic;Cotton - Werner Type;Supramolecular Self - Assembly;Molecular Devices