A Bispyrazole Based Porous 2D Luminescent MOF for the Turn‐Off Detection of Pd(II) Ions

Abstract

A novel bispyrazole based porous MOF ({[Zn(MBPz)(Ene)0.5]⋅2DMF⋅2H2O}n (1)) with open alkene (‐HC=CH‐) and nitrogen sites has been synthesized, as an efficient fluorescent sensor for Pd(II) ions. The MOF exhibits 3D supramolecular structure with open channels having 27.2% porosity. The unsaturated ‐CH=CH‐ moieties are present along the walls of open channels which is favorable for interaction with guest moieties. The cation sensitivity of 1 was evaluated using a series of transition metal ions in DMF. The fluorescence quenching of 1 was demonstrated by an approximately 94% reduction in the emission intensity upon binding to Pd2+ ions. The emission intensity of 1 at 414 nm has shown a linear response to Pd(II) ion concentration with a detection limit of 4.7 x 10−7 M. The sensing property of 1 towards Pd(II) ions is attributed to the π electron donation from the alkene bonds present in the ligand (Ene).

Advanced Functionalized Nanoclusters (Cu, Ag, and Au) as Effective Catalyst for Organic Transformation Reactions

“…Recent studies have demonstrated that nanostructures made up of copper (Cu), cuprous oxide (Cu 2 O), and cupric oxide (CuO) have significant catalytic activity, comparable to or even greater than that of noble metals [108–114] . However, metal nanoparticle agglomeration through a reaction typically results in quick loss of catalytic properties, and recycling these small catalysts via repeated centrifuging and cleaning is a tedious and unsatisfactory technique [115–117] . Unfortunately, these Cu‐based catalysts still have robustness and recycling difficulties, so it is essential to design highly active NCs or nanocatalysts that are resistant to agglomeration and can be regenerated without complexity.…”

Review on the Catalytic Significance of Zr‐Based Metal‐Organic Frameworks as Potential Catalyst for Various Organic Transformations

“…Using MOFs as catalysts not only improves their catalytic capabilities but also imbues them with certain electrical properties [24,25] . Shifting from homogeneous catalysis to heterogeneous catalysis is seen as a favourable course of action for environmentally sustainable and enduring advancements in the chemical industry [26–28] and catalysis [29] . The utilization of heterogeneous catalysts is highly preferred for organic reactions due to the drawbacks associated with traditional homogeneous catalysts including challenges in isolating the catalysts and managing the disposal and recovery of used catalysts [30–33] .…”