A photoluminescent microporous metal organic anionic framework for nitroaromatic explosive sensing

By using the octadentate ligand tetrakis[(3,5-dicarboxyphenoxy) methyl] methane (H8L), a rare (4,8)-scu type microporous coordination polymer, [In2L][NH2(CH3)(2)](2)center dot(DMF)(4)(H2O)(16), was synthesized and structurally characterized. The compound possesses an anionic three-dimensional open framework and exhibits permanent porosity with selective gas adsorption of CO2 over CH4. It exhibited strong fluorescence emission upon excitation at RT, and a selective, efficient emission quenching response towards nitroaromatic explosives.