title: Stability and porosity enhancement through concurrent ligand extension and secondary building unit stabilization.
abstract: 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.
authors.affiliation: Department of Chemistry and Biochemistry, Miami University, Oxford, Ohio 45056, USA.
authors.forename: Daofeng
authors.initials: D
authors.lastname: Sun
authors.forename: Yanxiong
authors.initials: Y
authors.lastname: Ke
authors.forename: Tracy M
authors.initials: TM
authors.lastname: Mattox
authors.forename: Sean
authors.initials: S
authors.lastname: Parkin
authors.forename: Hong-Cai
authors.initials: HC
authors.lastname: Zhou