线性反应器中[Cu(IDAc)(H_2O)_2]_∞一维纳米晶体自组装  

The Self-Assembly of One-Dimension \Cu(IDAc)(H_2O)_2_∞ Nanocrystals in a "Linear Reactor" (IDAC=iminodiacetic acid)

作　　者：郑雪琳[1,2] 翁家宝[1,2] 刘成峰[1,2] 孙萃玉 曹胜光[1,2] 

机构地区：[1]福建师范大学化学与材料学院,福州350007 [2]中国科学院福建物质结构研究所结构化学国家重点实验室,福州350002

出　　处：《应用化学》2004年第6期571-575,共5页Chinese Journal of Applied Chemistry

基　　金：中国科学院福建物质结构研究所结构化学国家重点实验室基金资助项目 ( 0 40 0 83 )

摘　　要：采用聚乙二醇 (PEG) 水体系构建一维开放的“线性反应器”。该体系中 ,由Cu(Ⅱ )和亚氨基二乙酸配体自组装合成不同尺寸 (D为 2 0～ 6 0nm ,长度为 2 0 0nm～ 2 2 μm)的一维线状纳米晶体 ,通过改变PEG和水的配比 ,可实现线状纳米晶体尺寸的调控。该反应器中形成的纳米晶体的结构与水溶液中自组装形成的[Cu(IDAc) (H2 O) 2 ]∞ 单晶相同。X射线单晶衍射表明 ,Cu(Ⅱ )的配位环境为四方锥形 ,平面配位键上的4个配位原子分别是配体的氮原子和 2个羧基氧原子及配位水分子 ,另一配位水分子处于四方锥形的轴向配位键上。相邻的结构单元通过羧基氧原子与Cu(Ⅱ )配位相桥连 ,形成一维Z字链状结构 。The 'linear reactor' made by polyethylene glycol(PEG) and water was used to assembly a series of one-dimension nano-sized crystals of title compound in various lengths(200 nm～2.2 μm) and diameters(20～60 nm). The length and diameters of the nanocrystals could be adjusted by changing the molecular weight of PEG and the content of water in the system. The main phase of the nanocrystal formed in reactor is found to be identical with that of the single crystal self-assembled in water. The analysis of X-ray single-crystal diffraction revealed that the donor atoms in the equatorial plane of the square pyramid geometry configuration of copper ion are imino nitrogen atom and two carboxylate oxygen atom from two different ligands and a water molecule is located in the axial position. The adjacent structural units are connected through the coordination of carboxylic oxygen from iminodiacetic acid with Cu(Ⅱ) to form one-dimension zigzag chain structure, and the definite chains construct a one-dimension nanocrystal through hydrogen-bondings.

关 键 词：亚氨基二乙酸 铜 自组装 纳米晶体 线性反应器 

分 类 号：O614[理学—无机化学]