Reaction of 2,3,6,7,10, in aqueous NH 3 solution under aerobic conditions produces Ni 3 (HITP) 2 (HITP = 2,3,6,7,10,, a new two-dimensional metal−organic framework (MOF). The new material can be isolated as a highly conductive black powder or dark blue-violet films. Two-probe and van der Pauw electrical measurements reveal bulk (pellet) and surface (film) conductivity values of 2 and 40 S•cm −1 , respectively, both records for MOFs and among the best for any coordination polymer.

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Metal–organic frameworks: The solvothermal reaction of Zn2+ ions and bis‐ (pyrazolyl)naphthalene diimide readily affords strongly adhering, electroactive metal–organic framework thin films on conductive glass substrates (see picture). Electrochemical cycling of these films followed by in situ UV/Vis spectroscopy reveals striking multicolored electrochromic responses.

A Zn benzotriazolate metal−organic framework (MOF), [Zn(ZnO 2 CCH 3 ) 4 (bibta) 3 ] (1, bibta 2− = 5,5′-bibenzotriazolate), has been subjected to a mild CH 3 CO 2 − /HCO 3 − ligand exchange procedure followed by thermal activation to generate nucleophilic Zn−OH groups that resemble the active site of α-carbonic anhydrase. The postsynthetically modified MOF, [Zn-(ZnOH) 4 (bibta) 3 ] (2*), exhibits excellent performance for trace CO 2 capture and can be regenerated at mild temperatures. IR spectroscopic data and density functional theory (DFT) calculations reveal that intercluster hydrogen bonding interactions augment a Zn−OH/Zn− O 2 COH fixation mechanism.