A new surfactant-introduction strategy for separating the pure single-phase of metal–organic frameworks
Jun Zhao, Yenan Wang, Wenwen Dong, Yapan Wu, Dongsheng Li,*Bin Liu* and Qichun Zhang*
Surfactant-directed crystal growth can effectively separate mixed-phase crystals. By introducing different surfactants, two previous mixed-phase Ni(II)–MOFs constructed from an undeveloped pyridyl-tetracarboxylate and Ni(II) salts were successfully isolated to obtain two pure products.

Chem. Commun., 2015,51, 9479-9482.