A Gyroidal MOF with Unprecedented Interpenetrating utc-c Network Exhibiting Exceptional Thermal Stability and Ultrahigh CO₂ Affinity

Abstract

A zeolite-like gyroidal MOF (denoted as SCNU-1) constructed with Cu ions and 4-(1H-imidazo-[4,5-f ][1,10]phenanthrolin-2-yl)phenol has a featured interpenetrating uninodal utc-c network which is for the first time found in the real structure. Moreover, SCNU-1 exhibits high thermal (>773 K), solvent, and acid/base stabilities; the largest CO 2 affinity, 90 kJ/mol, among the MOFs functionalized with an aromatic hydroxyl group; and excellent CO 2 /N 2 selectivity.

Structural Analysis and Controllable Fabrication of Two Pentazolate-Based 3D Topological Networks

“…Noticeably, MPF-1 demonstrates the simplicity and feasibility of the cyclo -N 5 – anion in assembling pentasil-zeolite topologies. Actually, the molecular design of topology networks heavily depends on coordination geometry and steric configuration of nodes and linkers. − However, the self-assembly process of linkers as well as metal nodes may not strictly follow angles and directions, which is bound to reduce the possibility of preparing the target structures. − This further implies that a cyclo -N 5 – anion with definite angles and shapes is an ideal ligand to use in preparing pentasil frameworks. The pentazolium salts of the same composition may form a variety of 3D crystal structures due to the multiple coordination capacity of the cyclo -N 5 – anion.…”

Luminescent uranium–thiophene dicarboxylate frameworks supported by transition-metal–organic cations: dimensionality and luminescence control in uranyl speciation

“…29,30 Interpenetration in UOFs can improve their structural stabilities, the achievement of the interpenetrated network is still challenging. 31 In the present work, we have combined d-block metal complex cations [ML 3 ] 2+ (M = Cu 2+ , Zn 2+ , and Cd 2+ , L = phenanthroline) with a uraniumIJVI)-TDC honeycomb-like layer to generate three novel UOFs with a 1-D neutral chain and 2-D non-interpenetrated and interpenetrated layers, i.e. [CuIJphen…”

“…29,30 Interpenetration in UOFs can improve their structural stabilities, the achievement of the interpenetrated network is still challenging. 31 In the present work, we have combined d-block metal complex cations [ML 3 ] 2+ (M = Cu 2+ , Zn 2+ , and Cd 2+ , L = phenanthroline) with a uranium( vi )-TDC honeycomb-like layer to generate three novel UOFs with a 1-D neutral chain and 2-D non-interpenetrated and interpenetrated layers, i.e. [Cu(phen) 2 (SO 4 )(UO 2 )(TDC)·H 2 O] n ( 1 ), {[Zn(phen) 3 ][(UO 2 ) 2 (TDC) 3 ]·TDC·6H 2 O} n ( 2 ), and {[Cd(phen) 3 ][(UO 2 ) 2 (TDC) 2 (OX)·2H 2 O]} n ( 3 ), whose structures and emission spectra in the solid state have been investigated.…”

N-Donor Auxiliary Ligand Influence on the Coordination Mode Variations of V-Shaped Triazole Dicarboxylic Acid Ligand Affording Seven New Luminescent Zn(II) Compounds with Variable Structural Motifs

“…Construction of entangled metal–organic frameworks (EMOFs) as a new class of potential materials has attracted great interest in the fields of synthetic chemistry and materials science. Besides their appealing topological structures, they can also be widely applied in many fields, such as gas storage, gas separation, optical sensors, ion exchange, and drug delivery. − In the classes of entangled phenomena, interpenetration and self-penetration are the most representative patterns and have been regarded as a challenging synthetic target. − At present, several strategies have been suggested for the rational design and synthesis of interpenetrating and self-penetrating structures, in which the selection of rigid/flexible mixed ligands has been proved to be an effective and controllable route. − The long rigid ligands are in favor of constructing highly porous structures, and the resulting framework has a good tendency to the form interpenetration. − The flexible ligands provide advantages in constructing self-penetrating networks because of their flexibility and conformational freedom, which can meet the geometry requirements of metal centers. − …”