Driven by tunable metal-ligand interactions, a polydentate ligand TC containing terpyridine and carboxylic acid units was developed to construct metallo-polymers that showed multiple aggregation modes with controlled macroscopic properties. In the presence of different kind of Zn²⁺ ions or NaOH, TC could form metallo-polymers via π-π stacking and metal-ligand interaction that further trapped water molecules, resulting in hydrogels and crystals. Moreover, these TC/Zn²⁺ hydrogels could transform to soluble and fluorescent aggregates in the presence of NaOH due to the formation of binuclear metallo-polymers with enhanced ICT emission. The metal-ligand interactions tuned by different metal salts in gels, crystals, and sols were also studied and illustrated in detail, it was also proved that water was an essential linker for constructing Na⁺-based metallo-polymers from the TC/NaOH crystal data. This work demonstrated the engineered coordination pathways in generating controllable hydrogels and metallo-polymers for the first time, which led to novel approach for facilely constructing a number of hydrogels with tailorable macroscopic properties.

在可调节的金属-配体相互作用的驱动下，开发了一种含有三联吡啶和羧酸单元的多齿配体TC，以构建表现出多种聚集模式且具有可控的宏观性能的金属聚合物。在存在不同种类的Zn ²⁺离子或NaOH的情况下，TC可以通过π-π堆积和金属-配体相互作用形成金属聚合物，从而进一步俘获水分子，从而形成水凝胶和晶体。此外，这些TC / Zn ²⁺在NaOH存在下，水凝胶可以转化为可溶性和荧光聚集体，这是由于形成了具有增强ICT排放能力的双核金属聚合物。还研究并详细说明了凝胶，晶体和溶胶中不同金属盐调节的金属-配体相互作用，还证明了水是从TC / NaOH晶体中构建基于Na ⁺的金属聚合物的必不可少的连接基数据。这项工作首次证明了在生成可控水凝胶和金属聚合物方面的工程协调途径，这导致了一种新颖的方法，可以轻松地构建许多具有可定制的宏观特性的水凝胶。