Temperature dependent structural variation from 2D supramolecular network to 3D interpenetrated metal–organic framework: In situ cleavage of S–S and C–S bonds

Interpenetrated Metal–Organic Frameworks of Cobalt(II): Structural Diversity, Selective Capture, and Conversion of CO2

“…Metal–organic frameworks (MOFs) are a new class of crystalline materials that have attracted tremendous attention over the last few decades due to their intriguing network topologies and novel properties. − Possessing the merits of both inorganic and organic building blocks, MOFs show useful applications for hydrogen storage, − carbon dioxide capture, − gas separation, − catalysis, − sensing, − magnetism, − drug delivery, − and so on. − The crystal engineering of MOFs depends on several factors such as coordination behavior of the metal ion, solvent, pH, concentration of the reaction, the counterion, temperature, and time of reaction. − It has been observed that the use of a rigid ligand, trans , trans -muconic acid (H 2 muco), in combination with pyridyl linkers resulted in MOFs with interpenetration/entanglement due to its moderately longer spacer length. − The origin of interpenetration in a framework is due to the availability of large voids, and MOFs with various degrees of interpenetration have been reported. However, the factors governing the degree of interpenetration are still unknown. − Thus, systematic investigation on the influence of bipyridyl spacers on the framework structure, dimensionality, topology, and functionality has gained considerable interest.…”

Auxiliary Ligand-Assisted Structural Variation of Cd(II) Metal–Organic Frameworks Showing 2D → 3D Polycatenation and Interpenetration: Synthesis, Structure, Luminescence Properties, and Selective Sensing of Trinitrophenol

“…In this regard, several multidentate ligands have been employed as building blocks for the construction of designer MOF materials. Among the various ligands, aliphatic and aromatic carboxylic acids having versatile coordination modes are the most preferred ones to construct MOFs with diverse structure and topology. − Furthermore, it has been observed that the use of rigid, long chain organic ligands or secondary building units (SBUs) has often resulted in the formation of interpenetrated networks which attract much attention due to their intriguing artistic and structure-dependent properties. − The origin of interpenetration in a framework has been attributed to the presence of large voids, and generally the interpenetration of nets leads to high stability/rigidity of the framework. On the other hand, polycatenation of low-dimensional (1D/2D) structures has also been known to generate high-dimensional (3D) MOFs with high stability. , It is interesting to note that the interpenetration and the polycatenation are quite different in the sense that the component motifs in polycatenation have lower dimensionality compared to that of the resulting framework, while the component motifs in interpenetration have the same dimensionality as that of the resulting MOF.…”

Comparative Study of Sperm DNA Isolation Method for Forensic Analysis

“…This method was ineffective for sperm cells because of the disulfide bridge. Ugale et al (2015) reported that the disulfide bridges could be broken at a minimum temperature of 100 o C without chemical compound help.…”