| 초록 |
Coordination-driven metallosupramolecules with functional multiplicity are of considerable importance in a variety of applications. The basic structural information of a cobalt triple-stranded helicates (CoTSHs) is the helical arrangement of two tetranuclear cobalt clusters and three isophthalate ligands. The introduction of desired functional moieties (hydroxyl groups) at specific positions on CoTSHs is feasible by using hydroxyl-isophthalate ligands (OH-PTA). Herein, the hydroxyl-functionalized CoTSH, [Co8(PDA)6(OH-PTA)3(DMF)6] (1) (PDA = 2,6-pyridinedicarboxylate, OH-PTA = 5-hydroxyl isophthalate, DMF = dimethylformamide) is isolated in the presence of 1,8-diazabicyclo[5.4.0]undec-7-ene (DBU) as a base. Upon using excessive amount of cobalt precursor and changing base used triethylamine (TEA), a higher-order one-dimensional polymer (2) with superb-hierarchical structure is generated. |
