Exploring and Expanding the Structural Diversity of Self-Assembling Dendrons through Combinations of AB, Constitutional Isomeric AB2, and AB3 Biphenyl-4-Methyl Ether Building Blocks
作者:Virgil Percec、Marian N. Holerca、Sami Nummelin、John J. Morrison、Martin Glodde、Jan Smidrkal、Mihai Peterca、Brad M. Rosen、Satoshi Uchida、Venkatachalapathy S. K. Balagurusamy、Monika J. Sienkowska、Paul A. Heiney
DOI:10.1002/chem.200600178
日期:2006.8.16
based amphiphilic dendrons. These dendrons self-assemble into supramolecular dendrimers that self-organize into periodic assemblies. Structural and retrostructural analysis of their assemblies demonstrated that these dendrons self-assemble into hollow and non-hollow supramolecular dendrimers exhibiting dimensions of up to twice those reported for architecturally related dendrons based on benzyl ether
合成树枝状结构单元3',4'-二羟基联苯-4-羧酸甲酯,3',5'-二羟基联苯-4-羧酸甲酯和3',4',5'-三羟基联苯甲基的通用,有效且廉价的方法详述了-4-羧酸盐。在所有合成中,主要步骤涉及廉价的Ni(II)催化的Suzuki交叉偶联反应。这三个结构单元与4'-羟基联苯-4-甲酸甲酯一起用于迭代迭代策略,合成了七个文库,这些文库最多包含3代,3',4'-,3',5'-和3'代,基于4',5'-取代的联苯-4-甲基醚的两亲树突。这些树突自组装成超分子树状大分子,其自组织成周期性组装。其组装体的结构和逆向结构分析表明,这些树枝状分子自组装为空心和非空心的超分子树枝状聚合物,其尺寸最多是报道的基于苄基醚重复单元的与建筑相关的树枝状聚合物的两倍。这些新的树枝状结构扩展了结构多样性,并证明了基于两亲性芳基甲基醚的自组装树枝状结构概念的普遍性。