Stability and porosity enhancement through concurrent ligand extension and secondary building unit stabilization.
A trigonal nanosized carboxylate ligand, 1,3,5-tris[4'-carboxy(1,1'-biphenyl-4-yl)]benzene (TCBPB), has been synthesized and applied in the construction of porous metal-organic frameworks (MOFs). A solvothermal reaction of TCBPB and a zinc salt in the presence of pyridine produces 1, an unstable MOF consisting of a tetrazinc secondary building unit (SBU) with labile terminal ligands. Changing pyridine to a noncoordinating base in the assembly procedure affords 2, a stable MOF with permanent porosity containing an octazinc SBU without labile terminal ligands.
Sun
Daofeng
D
Department of Chemistry and Biochemistry, Miami University, Oxford, Ohio 45056, USA.
Ke
Yanxiong
Y
Mattox
Tracy M
TM
Parkin
Sean
S
Zhou
Hong-Cai
HC