1D ladder and 2D bilayer coordination polymers constructed from a new T-shaped ligand: luminescence, magnetic and CO₂ gas adsorption properties

Abstract

A new three-connecting T-shaped ligand, (4-3′-pyridyl-,6-4′-carboxylphenyl)picolinic acid (H2L), was used to construct four coordination polymers: {[Mn(L)(H2O)2]•2H2O}n (1), {[Cd(HL)(Cl)]•0.5H2O}n (2), [Co(L)(H2O)]n (3) and {[Ni(L)(H2O)2]•1.5H2O}n (4). Based on this T-shaped ligand, one...

A Novel Molecular Assembly of a Cobalt–Sulfate Coordination Polymer and Melamine: A Manifestation of Magnetic Anisotropy

“…At high temperatures, the susceptibility follows the Curie–Weiss law χ = C /( T – θ) where C is the Curie constant and θ the Weiss temperature. Using the inverse Curie–Weiss relation, the curve of best fit (the cyan curve in Figure ) was obtained in the temperature range of 150–300 K with C = 3.45 cm 3 mol –1 K) and θ = −9.53 K. The Curie constant is in agreement with the values for high-spin Co­(II) in an octahedral environment ( C = 2.8–3.4 cm 3 mol –1 K) reported in literature. − The corresponding effective magnetic moment is μ eff = (8 C ) 1/2 = 5.25. The negative Weiss temperature suggests an antiferromagnetic coupling, likely between the nearest neighbor spins of the CoS chains (see Figure ).…”

From zero-dimensional metallomacrocycle to three-dimensional metal–organic frameworks mediated by solvent polarity: near-white light emissions and gas adsorption properties

“…21 As shown in Scheme S2 (ESI†), substrate c was also synthesized by aldol reaction, and then the reaction between substrates c and d involving Kröhnke pyridine synthesis procedure afforded e, which then was hydrolysed into H 4 L2 ligand. 22 As shown in Scheme 1, 0D metallo-macrocycle ( 1 ), 3D MOFs ( 2–5 ), and 2D metallomacrocycle network ( 6 ) were solvothermally synthesized. The consistency of experimental and calculated PXRD patterns clarified the phase purity of all six complexes (Fig.…”

Highly stable Ni(ii)/Zn(ii)-CPs as multiresponsive luminescent sensors for detection of IO4−, 2,6-dichloro-4-nitrophenol and folic acid

“…Compared with other probe materials, CPs have unique advantages such as reversibility, tunability, and versatility, making them valuable for important applications in analysis and detection. [24][25][26] These unique advantages enable CPs to possess properties such as luminescence sensing, [27][28][29][30] electrocatalysis, 31 drug delivery, 32 gas adsorption, 33 photocatalysis, 34,35 magnetism 36 and antibacterial properties. 37 CPs as fluorescent sensors have been widely used for the detection of analytes such as cations, 38 anions, 39 volatile organic compounds (VOCs) 40 and bioanalytes, [41][42][43] while multiresponsive luminescent sensors for the detection of IO 4 À , 2,6-DCNP and FA are relatively rare.…”