“…To date, crown ether [13][14][15][16][17][18], "blue box" (CBPQT 4+ ) [19,20], cucurbiurils [21][22][23], octametallic metallacrown [24][25][26][27], and polyamide [28,29] have been utilized to produce a series of MORF structures. The Texas-sized molecular box ([cyclo [2](2,6-di(1Himidazol-1-yl)pyridine) [2](1,4-dimethylenebenzene), 1 4+ ) [30,31] was developed to construct MORFs cooperating with metal cations (e.g., Zn 2+ , Ag + , or lanthanide) and aromatic dicarboxylate anions (Figure 1).…”