Chemical transformation strategy is capable of fabricating nanomaterials with well-defined structures and fascinating performance via controllable crystallization kinetics in the phase transformation. V₂CT_x MXene has been used as precursors to fabricate vanadium porphyrin metal–organic frameworks (V-PMOFs) via the coordination of deprotonated carboxylic acid ligands. However, the rational and in-depth exploration of synthesis mechanism with the aim of enriching the variety of MXene (i.e., Ti₃C₂T_x) and organic ligands (i.e., catechol-based) to design new MOFs is rarely reported. Herein, we have first developed a metal ion assistant transformation strategy to synthesize three-dimensional catechol-based TiCu-HHTP (HHTP = 2,3,6,7,10,11-hexahydroxytriphenylene) MOFs with a non-interpenetrating SrSi₂ (srs) framework using two-dimensional Ti₃C₂T_x as precursors. The unique synergetic transformation mechanism involves the electron transfer from Ti₃C₂T_x to electrostatically adsorbed Cu²⁺ ion for redox reaction, the subsequent Ti–C bond rupture for Ti⁴⁺ ion release, and the continuous chelation coordination between Ti⁴⁺/Cu²⁺ and HHTP. Ti₃C₂T_x precursors and auxiliary metal ion could be rationally substituted by V₂CT_x and Mⁿ⁺ (e.g., Ni²⁺, Co²⁺, Mn²⁺, and Zn²⁺), respectively. This strategy lays the foundation for the design and synthesis of innovative and multifarious MOFs derived from MXene or other unconventional metal precursors.

化学转变策略能够通过相变中可控的结晶动力学来制造具有明确结构和令人着迷的性能的纳米材料。V ₂ CT _x MXene 已被用作前体，通过去质子化的羧酸配体的配位来制造钒卟啉金属有机框架（V-PMOF）。_{然而，以丰富MXene（即Ti 3} C ₂ T _x）和有机配体（即儿茶酚基）的多样性来设计新型MOFs的合成机制的合理而深入的探索却鲜有报道。在此，我们首先开发了一种金属离子辅助转化策略，以合成具有非互穿SrSi ₂ ( srs）使用二维Ti ₃ C ₂ T _x作为前体的骨架。独特的协同转化机制包括电子从Ti ₃ C ₂ T _x转移到静电吸附的Cu ²⁺离子进行氧化还原反应，随后Ti-C键断裂释放Ti ⁴⁺离子，以及Ti ⁴⁺之间的连续螯合配位/Cu ²⁺和HHTP。Ti ₃ C ₂ T _x前体和辅助金属离子可以分别被V ₂ CT _x和Mn ^{+ (}例如Ni ²⁺、Co ²⁺、Mn ²⁺和Zn ²⁺ )合理取代。该策略为设计和合成源自 MXene 或其他非常规金属前体的创新且多样化的 MOF 奠定了基础。