A porous metal-organic framework constructed from carboxylate-pyrazolate shared heptanuclear zinc clusters: Synthesis, gas adsorption, and guest-dependent luminescent properties

摘要

A three-dimensional porous structure of [Zn_7O _2(bpdc)_4(dmpp)_2]·6DEF·10H _2O (MAC-7, H_2bpdc = 4,4′-biphenyldicarboxylic acid, Hdmpp = 3,5-dimethyl-4-(4′-pyridyl)pyrazole), built of 12-bridged carboxylate-pyrazolate shared Zn_7O_2 clusters, has been synthesized. Because of the presence of 12-bridged carboxylate-pyrazolate shared building block, MAC-7 is a double-linked pcu-type framework and shows reversible phase transformation. Photoluminescent property studies indicate that MAC-7 could sense nitrobenzene over toluene, p-xylene, and mesitylene by luminescent quenching.