A series of bis-pyridyl-bis-amide-modulated metal–organic frameworks: formation, transformation and selectivity for the efficient detection of multiple analytes

Abstract

The designing of luminescent metal-organic frameworks (LMOFs) as sensors for the detection of molecules and ions constitutes an active area of research. Four various three-dimensional (3D) unusual LMOFs {[Zn(3-pda)(TA)]•H2O}n (1),...

Zn(II)-Coordination Complex(s) from Chiral Bisamides of L-Phenylalanine: Nanoscale-Based Biological Applications and Metallogelation

“…Although few similar kinds of bisamido-peptides were previously synthesized for metalation purposes (with Cu II ions in most of the cases) by utilizing bis-pyridyl moieties as a symmetrical bidentate donor site, those were exploited for making coordination polymers − ( CP s). However, purposefully designed unsymmetrical monopyridyl bisamido-peptide monodentate ligands for characterizing metallo-coordination complexes ( CC s) with biologically potent Zn­(II) halides by SXRD were unknown and challenging from the perspective of crystal engineering approach.…”

“…Further analyses revealed the existence of a similar kind of 1D β-sheet-type strong amidic N−H•••O hydrogen-bonded network among adjacent ligand molecules (Table S4, Supporting Information) in the cases of the paraisomer (PME) 51 Crystal Structures of CC1, CC2, and CC3. Although few similar kinds of bisamido-peptides were previously synthesized for metalation purposes (with Cu II ions in most of the cases) by utilizing bis-pyridyl moieties as a symmetrical bidentate donor site, those were exploited for making coordination polymers [35][36][37][38][39][40][41][42][43][44][45][46][47][48][49][50]. However, purposefully designed unsymmetrical monopyridyl bisamido-peptide monodentate ligands for characterizing metallo-coordination complexes (CCs) with biologically potent Zn(II) halides by SXRD were unknown and challenging from the perspective of crystal engineering approach.…”

“…As a special class of solid-like soft materials governed by metal–ligand coordination followed by noncovalent interactions, thus, coordination complexes ( CC s) having a biologically active amino acid part as constituents and metal salts having known for bioremedial property could be applied to acquire an additional beneficiary effect. Following the hypothesis of designing the number of metal-assisted self-assemblies, Dastidar's group − was heavily involved in making functional soft gelator materials displaying biomedical applications. Although most of the studies were involved in making metal-assisted assemblies on the basis of utilizing symmetrical bis-pyridyl-based bisamide moieties or dicarboxylate ligands as coordination polymer-based linkers or salts of nonsteroidal anti-inflamatory drugs (NSAIDs), however successfully utilizing a monopyridyl group as a monodentate metal-binding part decorated with biologically potent L -phenylalanine as a Zn­(II)-coordination complex ( CC )-based metallogel is very rare in the literature.…”