A smart sensing triazine hexacarboxylic metal-organic skeleton material: synthesis, structure and multifunctional fluorescence detector

• Published in: Journal of materials chemistry. C, Materials for optical and electronic devices Materials for optical and electronic devices, 2021-03, Vol.9 (9), p.3193-323
• Main Authors: Xiao, Yao, Li, Bing, You, Zi Xin, Xing, Yong Heng, Bai, Feng Ying, Sun, Li-Xian, Shi, Zhan
• Format: Article
• Language: English
• Subjects: Absorption spectra; Anions; Colchicine; Coordination compounds; Crystallography; Ferric ions; Fluorescence; Infrared spectroscopy; Ligands; Low concentrations; Metal-organic frameworks; Nitro compounds; Properties (attributes); Room temperature; Single crystals; Solvents; Spectrum analysis; Structural analysis; Thermogravimetric analysis; X ray powder diffraction; X-ray diffraction
• ISSN: 2050-7526; 2050-7534
• DOI: 10.1039/d0tc05573e

A novel lanthanide metal organic framework [(NH 2 (Me) 2 )] 6 ·[Tb 3 (TDPAT) 2 (μ 2 -O) 1.5 ]·3EtOH·7.5H 2 O (complex 1 ) was constructed via the reaction of 5,5′,5′′-(1,3,5-triazine-2,4,6-triyltriimino) tris(azanediyl) triisophthalate (H 6 TDPAT) and TbCl 3 ·6H 2 O. It was well characterized by single-crystal X-ray diffraction, IR spectroscopy, UV-vis spectroscopy, elemental analysis, powder X-ray diffraction (PXRD) and thermogravimetric analysis (TG). Structural analysis confirmed that complex 1 is composed of binuclear building blocks [Tb 2 (COO) 12 (μ 2 -O)] connected by a triazine hexacarboxylic skeleton, which showed an interesting three-dimensional microporous structure. In addition, the fluorescence properties of complex 1 were explored at room temperature. Surprisingly, the results illustrate that complex 1 has outstanding fluorescence properties and can be used as a multifunctional sensor to selectively detect colchicine, some anions, Fe 3+ and nitro compounds. Most notably, the detection of colchicine can still be carried out under biological conditions. To our best knowledge, this is the first example of multifunctional fluorescence sensing properties based on the metal organic framework of Tb 3+ and triazinehexacarboxylic acid. A novel lanthanide metal organic framework [(NH 2 (Me) 2 )] 6 ·[Tb 3 (TDPAT) 2 (μ 2 -O) 1.5 ]·3EtOH·7.5H 2 O (complex 1 ) was constructed via the reaction of 5,5′,5′′-(1,3,5-triazine-2,4,6-triyltriimino) tris(azanediyl)triisophthalate (H 6 TDPAT) and TbCl 3 ·6H 2 O.