【作者】 周延； 吴立新；

【Author】 Yan Zhou;Lixin Wu;State Key Laboratory of Supramolecular Structure and Materials College of Chemistry,Jilin University;

【机构】 超分子结构与材料国家重点实验室吉林大学化学学院；

【摘要】 二维层状纳米材料近年来得到越来越多的研究关注,超薄厚度和二维形貌决定了其独特的物理化学性质[1]。多金属氧酸盐具有明确的化学组成,丰富的拓扑结构和多样的表面电荷,在自组装领域发挥巨大潜力[2]。本文中,我们设计合成了含有柱[5]芳烃的阳离子表面活性剂,以多金属氧簇(POM)为节点,通过静电相互作用将柱[5]芳烃集成在POM表面得到POM基超分子主体复合物,该主体复合物与中性卟啉基客体分子在氯仿中混合后,柱[5]芳烃空腔与客体分子末端的氰基发生主客体识别,组装4小时后得到正交的二维超分子骨架结构,在电镜下观察到二维纳米片状组装体。该纳米片状组装体宽度为几十微米,厚度为5纳米左右。我们期望利用其孔结构及二维尺度特性,在分离,催化等领域有所应用。更多还原

【Abstract】 2 D layered nanomaterials have received increasing research interest in recent years, due to their unique physical and chemical properties originated from their ultrathin thickness and 2 D morphology. Polyoxometalates with definite chemical composition, abundant topological structures and diverse surface charges have great potential in the field of self-assembly. In this paper, we design and synthesis a pillar[5]arene containing cationic surfactant, taking POM as the nod, we integrate the cationic pillar[5]arene surfactant around the surface of POM via electrostatic interaction to form a host complex, then let this host complex together with neutral porphyrine based guest molecule mix in chloroform, under this condition the cavities of pillar[5]arene will recognize the cyano group on the end of guest molecule via host-guest interaction. Orthorhombic two-dimensional supramolecular framework will be formed after 4 hours’ assembling and nanosheet structures can be observed under electron microscope. The width of the nanosheet is dozens of micrometers, and the height is around 5 nm.We wish to develop some applications in separating and catalyst based on the pore structure and two dimensional characteristics of the nanosheet.更多还原