Zhen-Zhen Shi

Exploring the Detection of Metal Ions by Tailoring the Coordination Mode of V-Shaped Thienylpyridyl Ligand in Three MOFs

By employing a rational design approach, we synthesized three luminescent metal-organic frameworks (MOFs) 1-3 affording different coordination modes of V-shaped thienylpyridyl ligand. Their application in detecting metal ions was explored, and the mechanism was inferred. And the result exhibits that MOF 3 is a dual-responsive luminescent probe for Fe3+ and Al3+ ions.

Four new metal–organic frameworks based on a rigid linear ligand: synthesis, optical properties and structural investigation

Four coordination polymers, namely, {[Cd(L)(BIP)]·3H2O}n (1), {[Co(L)(BIBP)(H2O)4]·4H2O}n (2), {[Ni(L)(BIBP)(H2O)2]·2DMF}n (3), [Ni(L)(BIMB)(DMF)(H2O)]n (4), have been synthesized based on a rigid linear carboxylate ligand (H2L = 2′,5′-dimethoxy-[1,1′:4′,1′′-terphenyl]-4,4′′-dicarboxylic acid) and different lengths of imidazole ligands (BIP = 1,4-di(1H-imidazol-1-yl)benzene; BIBP = 4,4′-di(1H-imidazol-1-yl)-1,1′-biphenyl; BIMB = 4,4′-bis((1H-imidazol-1-yl)methyl)-1,1′-biphenyl). These complexes have been characterized by single crystal X-ray diffraction, infrared spectroscopy, thermogravimetry, elemental analysis, and powder X-ray diffraction measurements. Complex 1 is a 6-connected 3-fold interpenetrating pcu net with the point symbol {412·63}, 2 is a 1D supramolecular chain-like structure, 3 and 4 can be simplified as 4-connected sql nets with the point symbol {44·62}. In addition, UV-visible spectra and photoluminescent properties are also investigated in detail.

CCDC 1422761: Experimental Crystal Structure Determination

Related Article: Ming-Dao Zhang, Yan-Le Li, Zhen-Zhen Shi, He-Gen Zheng, Jing Ma|2017|Dalton Trans.|46|14779|doi:10.1039/C7DT03205F