Huang Xiaohui, Liu Shengyong, Rao Shenghui, Lu Jiangyue, Xiao Ke, Bai Yang, Huang Zhe, Li Hui
Jiangxi Provincial Key Laboratory of Functional Molecular Materials Chemistry, School of Chemistry and Chemical Engineering, Jiangxi University of Science and Technology, Ganzhou 341000, P. R. China.
Shaanxi Key Laboratory of Chemical Additives for Industry, College of Chemistry and Chemical Engineering, Shaanxi University of Science and Technology, Xi'an 710021, P. R. China.
Dalton Trans. 2023 Oct 17;52(40):14510-14516. doi: 10.1039/d3dt02452k.
In this work, two different monomers M1 and M2 were designed and synthesized. M1 + M2 + Zn(OTf) could self-assemble to form a supramolecular crosslinked polymer (SCP) based on complementary terpyridine-based metal coordination interaction. The self-assembly of M1 + M2 + Zn(OTf) was studied by various techniques, such as H NMR, 2D COSY NMR, 2D NOESY NMR, UV-Vis analysis, fluorescence analysis, viscosity measurement, and TEM. The experimental result indicated that the molecular weight of the SCP depended on the initial monomer concentration. The SCP could further turn into supramolecular polymer gel at high concentrations, and the reversible gel-sol transformation could be realized by heating/cooling. Moreover, the fluorescence quenching/enhancement of the SCP could be adjusted by adding base/acid.
在这项工作中，设计并合成了两种不同的单体M1和M2。M1 + M2 + Zn(OTf) 可基于互补的基于三联吡啶的金属配位相互作用自组装形成超分子交联聚合物（SCP）。通过多种技术研究了M1 + M2 + Zn(OTf) 的自组装过程，如1H NMR、二维COSY NMR、二维NOESY NMR、紫外可见分析、荧光分析、粘度测量和透射电子显微镜。实验结果表明，SCP的分子量取决于初始单体浓度。在高浓度下，SCP可进一步转变为超分子聚合物凝胶，通过加热/冷却可实现可逆的凝胶-溶胶转变。此外，通过添加碱/酸可调节SCP的荧光猝灭/增强。
