Nguyen Thanh Nhan, Tran Ngoc Minh, Park In-Hyeok, Yoo Hyojong
Department of Materials Science and Chemical Engineering, Hanyang University, Ansan, Gyeonggi-do 15588, Republic of Korea.
Graduate School of Analytical Science and Technology (GRAST), Chungnam National University, Daejeon 34134, Republic of Korea.
ACS Omega. 2022 Apr 8;7(15):13067-13074. doi: 10.1021/acsomega.2c00447. eCollection 2022 Apr 19.
The systematic combination of well-defined coordination spheres and multiple types of ligands (heteroleptic) can lead to the generation of hierarchical metallosupramolecules with a high level of complexity and functionality. In particular, a specific multilevel coordination-driven assembly through the initiate generation of multinuclear clusters can form unique heteroleptic multiple-stranded supramolecular complexes. Herein, we report novel triple-stranded nickel-based supramolecules constructed from two different ditopic ligands ([1,1':3',1''-terphenyl]-4,4''-dicarboxylate (TP) and 2,6-pyridinedicarboxylate (PDA)) and a nickel precursor. The solid-state structures of the as-synthesized supramolecules revealed that three PDA ligands are employed to fabricate a tetranuclear ({Ni}) cluster, and two {Ni} clusters are assembled to form the final triple-stranded metallosupramolecules by three TP ligands. The bridging TP ligands also provide large inner voids with highly hydrophobic environments. Structural investigation of the generated complexes provided a deeper understanding of the aspects driving the formation of heteroleptic supramolecules, which is crucial for the design of multiple-strands with desired morphologies and functionalities.
定义明确的配位球与多种类型配体（杂配体）的系统组合可导致生成具有高度复杂性和功能性的分层金属超分子。特别是，通过引发多核簇的生成进行特定的多级配位驱动组装可形成独特的杂配多链超分子复合物。在此，我们报道了由两种不同的双齿配体（[1,1':3',1''-三联苯]-4,4''-二羧酸酯（TP）和2,6-吡啶二甲酸酯（PDA））和镍前驱体构建的新型三链镍基超分子。所合成超分子的固态结构表明，三个PDA配体用于构建一个四核（{Ni}）簇，两个{Ni}簇通过三个TP配体组装形成最终的三链金属超分子。桥连的TP配体还提供了具有高度疏水环境的大内部空隙。对所生成复合物的结构研究有助于更深入地理解驱动杂配超分子形成的各个方面，这对于设计具有所需形态和功能的多链至关重要。
