Heteroleptic Metallosupramolecular Racks, Rectangles, and Trigonal Prisms: Stoichiometry-Controlled Reversible Interconversion
作者:Subhadip Neogi、Yvonne Lorenz、Marianne Engeser、Debabrata Samanta、Michael Schmittel
DOI:10.1021/ic400328d
日期:2013.6.17
about each structure. A stoichiometry-controlled supramolecule-to-supramolecule interconversion based on the relative amounts of metal bisphenanthroline and bipyridine forces the rectangular assembly to reorganize to a rack architecture and back to the rectangle, as clearly supported by variable temperature and DOSY NMR as well as dynamic light scattering data. The highly dynamic nature of the assemblies
利用HETPYP(HET易感性PY ridyl和P henanthroline金属络合物)概念,描述了一种制备异方二维(2D)矩形和三维(3D)三角棱镜的简单方法。通过以适当的比例混合各种长度的负载金属的线性双菲咯啉与各种(多)吡啶(py)配体,在没有任何模板的情况下,干净而自发地产生了六种不同的自组装结构。它们的特点是1H和DOSY NMR,ESI-FT-ICR质谱以及Job图和UV-vis滴定法。密度泛函理论(DFT)计算提供有关每个结构的信息。化学计量控制的超分子到超分子的相互转化基于金属双菲咯啉和联吡啶的相对量,迫使矩形组件重组为机架结构并回到矩形,这明显受到可变温度和DOSY NMR以及动态光的支持分散数据。组件的高度动态特性代表了构造动态材料的有希望的起点。