TNP can't hide from MOF: A three‐dimensional fluorescent metal–organic framework (MOF), [Cd(NDC)0.5(PCA)]⋅Gx, can be used for the detection of 2,4,6‐trinitrophenol (TNP). The MOF exhibits high selectivity towards TNP, even in the presence of other nitro explosives in aqueous and organic solutions, owing to electron‐ and energy‐transfer mechanisms and electrostatic interactions.

Two complementary design strategies, isomorphous ligand replacement and heterocycle doping, have been applied to iteratively enhance the proton conductivity of a metal-organic framework, β-PCMOF2. The resulting materials, PCMOF2/(Pz) and PCMOF2/(Tz) (Pz = 1H-pyrazole, Tz = 1H-1,2,4-triazole), have their proton conduction raised almost 2 orders of magnitude compared to β-PCMOF2. The bulk conductivities of these materials are over 10 S cm at 85 °C and 90% relative humidity (RH), while maintaining the parent MOF structure. A solid state synthetic route for doping 1-D channels is also presented.

Highly selective and sensitive aqueous-phase detection of nitro explosive 2,4,6-trinitrophenol (TNP) by a hydrolytically stable 3D luminescent metal-organic framework is reported. The compound senses TNP exclusively even in the presence of other nitro-compounds, with an unprecedented sensitivity in the MOF regime by means of strategic deployment of its free amine groups. Such an accurate sensing of TNP, widely recognized as a harmful environmental contaminant in water media, establishes this new strategic approach as one of the frontiers to tackle present-day security and health concerns in a real-time scenario.

2,4,6‐Trinitrophenol (TNP) lässt sich mithilfe der fluoreszierenden dreidimensionalen Metall‐organischen Gerüststruktur (MOF) [Cd(NDC)0.5(PCA)]⋅Gx nachweisen. Aufgrund von Elektronen‐ und Energietransfermechanismen sowie elektrostatischen Wechselwirkungen ist dieses MOF sogar in Gegenwart anderer Nitrosprengstoffe in wässrigen und organischen Lösungen hoch selektiv für TNP.

A sulfonated indium (In) metal organic framework (MOF) is reported with an anionic layered structure incorporating hydrogen-bonded dimethylammonium cations and water molecules. The MOF becomes amorphous in >60% relative humidity; however, impedance analysis of pelletized powders revealed a proton conduction value of over 10 S cm at 25 °C and 40% RH, a very high proton conduction value for low humidity and moderate temperature. Given the modest humidity stability of the MOF, triaxial impedance analyses on a single crystal was performed and confirmed bulk proton conductivity over 10 S cm along two axes corroborating the data from the pellet.