Synthesis, Structure and Fluorescence Properties of Two Metal-Organic Frameworks Based on a Benzimidazole-Derived Ligand

Abstract

The luminescent complexes [Cd(BIMP)2(NDC)2]n and [Zn(BIMP)2(NDC)]n (where (3-BIMP) = 3-(1H-benzoimidazol-2-yl)pyridin-2(1H)-one and NDC = 2,6-naphthalenedicarboxylic acid) have been synthesised under hydrothermal conditions and their crystal structures determined. [Cd(BIMP)2(NDC)2]n exhibited a 1D → 2D → 3D framework structure and [Zn(BIMP)2(NDC)]n has a 3D porous structure. Under the same excitation energy (λex = 389 nm), [Zn(BIMP)2(NDC)]n showed a stronger fluorescence emission than the free 3-BIMP ligand, the NDC ligand and [Cd(BIMP)2(NDC)2]n.

Anion-induced two stable isostructural Cd(ii) LMOFs based on benzotriazole with the highly selective detection of Fe3+ ions

“…Based on our previous research on LMOFs, 39–44 in this paper, benzotriazole ligands with multiple nitrogen sites and a larger conjugated system were selected as luminescent chromophores to prepare two novel LMOFs, namely [Cd 9 (BTA) 6 (5-tbuip) 6 O 2 ] n ( LMOF-1 ) and [Cd 3 (BTA) 2 (5-tbuip) 2 ] n ( LMOF-2 ). Both compounds were characterized using X-ray powder diffraction, thermogravimetric analysis, X-ray crystallography and elemental analysis.…”

“…[19][20][21][22][23][24][25][26][27][28][29] The excellent properties of LMOFs, especially their broad and tunable porosity, luminescence and chemical selectivity, make them excellent candidates for chemical sensing materials. [30][31][32][33][34][35][36][37][38] Based on our previous research on LMOFs, [39][40][41][42][43][44] in this paper, benzotriazole ligands with multiple nitrogen sites and a larger conjugated system were selected as luminescent chromophores to prepare two novel LMOFs, namely [Cd 9 (BTA) 6 (5tbuip) 6 O 2 ] n (LMOF-1) and [Cd 3 (BTA) 2 (5-tbuip) 2 ] n (LMOF-2). Both compounds were characterized using X-ray powder diffraction, thermogravimetric analysis, X-ray crystallography and elemental analysis.…”

Synthesis, structure, and fluorescence properties of two metal-organic complexes based on a tripodal carboxamide-containing ligand

“…Metal-organic complexes (MOCs), which contain both inorganic metal ions and organic ligands at the same time, usually feature a variety of structures 1,2 and interesting distinct properties that pure inorganic or organic compounds do not have. This results in MOCs having potential applications in many fields, including optics, 3 magnetic materials, 4 porous materials. 5…”