From zero-dimensional complexes to one-dimensional coordination polymers adjusted by the solvents or ligand substituent groups

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

“…1 H NMR (dmso-d 6 , 400 MHz, Fig. S2, ESI †): δ 12.70-10.54 (m, 4H), 8.52 (d, J = 8.4 Hz, 8H), 8.40 (d, J = 9.5 Hz, 4H), 8.25 (d, J = 8.4 Hz, 4H), 8.14 (d, J = 8.2 Hz, 8H), 8.01 (d,J = 8.4 Hz,4H). IR (KBr, cm −1 ): 1685vs, 1605vs, 1426w, 1401w, 1290s, 1257s, 1180m, 1116m, 1016w, 1005w, 923w, 880w, 844m, 770s, 755vs, 667m, 479m. Solvothermal synthesis of 0D metallomacrocycle 1.…”

From two-dimensional networks to three-dimensional metal–organic frameworks mediated by solvent ratio: luminescence and gas adsorption properties

“…The usage of different solvents in the reaction system may affect the ultimate structure/dimensionality of CPs or MOFs. 11 Notably, it is still an essential challenge to adjust the various structures/dimensionalities of CPs or MOFs by only changing the solvent ratio.…”

“…Usually, rigid ligands with these coordinating groups attached at aromatic rings are more likely to be exploited to obtain CPs or MOFs with higher structural stability. Following our interest in the hydrothermal syntheses of novel CPs or MOFs by using aromatic carboxylic acid ligands based on a pyridine core, 11 b ,12 we synthesized one new ligand bearing both pyridyl and carboxyl coordination groups, namely 4-(2-chloroimidazo[1,2- a ]pyridin-3-yl)-[2,4′-bipyridine]-6-carboxylic acid (HL). This picolinic acid derivative possesses a π-conjugated rigid backbone.…”

“…This picolinic acid derivative possesses a π-conjugated rigid backbone. Some interesting CPs and MOFs based on picolinic acid derivative ligands have been reported by our group 11 c ,13 and other 14 groups; it is necessary to exploit novel CPs or MOFs with various structures and/or properties by using new picolinic acid derivative ligands. Based on this new ligand, and only through changing the solvent ratio, two new two-dimensional (2D) CPs 1 ([Co(L) 2 ] n ) and 2 ({[Co 3 (L) 4 (NO 3 ) 2 (H 2 O) 4 ]·2H 2 O} n ), and two novel isostructural three-dimensional (3D) MOFs 3 ({[Co(L)(NO 3 )(H 2 O)]·0.5H 2 O} n ) and 4 ({[Ni(L)(NO 3 )(H 2 O)]·0.5H 2 O} n ) have been solvothermally synthesized and structurally characterized.…”