A functional supramolecular Mn­(II)-metallogel (Mn@OX) has been synthesized through the direct mixing of manganese­(II) acetate tetrahydrate and oxalic acid dihydrate, a low molecular weight gelator (LMWG), in N,N-dimethylformamide solvent followed by continious sonication for about 10 h. The mechanical property of the supramolecular Mn@OX metallogel has been explored through rheological investigation. FESEM microstructural study reveals the flakelike morphology with a self-assembled architecture of the supramolecular Mn@OX metallogel. The metallogel formation strategy, crystalline nature, and thermal behavior of the Mn@OX have been explored through infrared spectral, PXRD, and TGA study. The optical as well as the electrical property of the metallogel was thoroughly examined, and this measurement indicates the semiconducting nature of Mn@OX. The synthesized Mn­(II)-metallogel was successfully applied in an active electronic device which shows substantial carrier diffusion length and mobility-lifetime product.

Two brilliant outcomes of supramolecular self-assembly directed, low molecular weight organic gelator based self-healable Co(II) and Ni(II) metallogels were achieved. The adipic acid as the low molecular weight organic gelator...

A DNA-hydrogel, produced using calf-thymus DNA and a 2′,4′,6′-tri(4-pyridyl)pyridine based luminescent supramolecular hydrogel, can stabilize sunray mediated photochemically synthesized bio-compatible, luminous Ag-NPs.

Two Mg(II) malonate complexes with protonated 2-aminopyridine and protonated 2-amino-4-picoline as counterions, namely, (C(5)H(7)N(2))(4)[Mg(C(3)H(2)O(4))(2)(H(2)O)(2)](ClO(4))(2) (1) and (C(6)H(8)N(2)H)(2)[Mg(C(3)H(2)O(4))(2)(H(2)O)(2)] x 4 H(2)O (2) [C(5)H(7)N(2) = protonated 2-aminopyridine, C(3)H(4)O(4) = malonic acid, C(6)H(8)N(2)H = protonated 2-amino-4-picoline], have been synthesized from purely aqueous media, and their crystal structures have been determined by single-crystal X-ray diffraction. The role of lone pair...pi interactions in stabilizing the self-assembly process appears to be of great importance in both complexes. Additional weak forces like anion...pi and noncovalent O...O interactions are also found to be operating in 1. A rare combination of lone pair...pi and anion...pi interactions in 1, of the type lone pair...pi/pi...pi/pi...anion...pi/pi...lone pair, is observed, and this unusual supramolecular network is fully described here. An attempt to prepare an analogous complex with 2-amino-4-picoline resulted in 2, which is isomorphous with our recently reported transition-metal complexes of the type (C(6)H(8)N(2)H)(2)[M(C(3)H(2)O(4))(2)(H(2)O)(2)] x 4 H(2)O (M = Ni/Co/Mn). A high-level DFT-D study (RI-B97-D/TZVP) has been used to characterize the different noncovalent interactions present in the solid state. We have also analyzed some crystal fragments to examine energetically some important assemblies that drive the crystal packing. Finally, we have studied the influence of magnesium on some hydrogen-bonding interactions.