Copper triazine polycarboxylic acid crystalline framework materials: Synthesis, structure and multifunctional properties with the luminescent and catalytic reduction of 4-NP. (1st February 2021)

• Record Type: Journal Article
• Authors: Wang, Li-Yan; Han, Xue; Shi, Zhan; Xing, Yong-Heng; Sun, Li-Xian
• Is Part Of: Polyhedron. Volume 195(2021)
• Publication Date: 2021-02-01
• Subjects: 1, 3, 5-Triazine-2 -- 4, 6-Triamine hexaacetic acid -- Cu-MOF -- Fluorescence sensor -- Catalyst; Chemistry, Inorganic -- Periodicals; Chimie inorganique -- Périodiques; Organometaalverbindingen; Anorganische chemie; 546.05
• DOI: 10.1016/j.poly.2020.114966
• Languages: English
• ISSNs: 0277-5387

Abstract

Graphical abstract: We successfully synthesized two coordination polymers [Cu2 (H2 TTHA)(H2 O)6 ] (1 ) and [Cu3 (H3 TTHA)(μ3 -O)(μ3 -OH)(μ2 -H2 O)2 (H2 O)]·2H2 O (2 ) by using metal Cu 2+ and ligand H6 TTHA, and used coordination polymer 1 to study the behaviors of catalytic reduction of 4-NP and the fluorescent respond to detect Fe 3+ . Highlights: Two coordination polymers were synthesized, 1 can detect Fe 3 + and act as a catalyst. Abstract: Metal-organic frameworks are a class of promising materials that are widely used in various fields such as detection, catalysis, and adsorption. A new protonated coordination polymer [Cu2 (H2 TTHA)(H2 O)6 ] (1 ) containing two uncoordinated carboxylate acid groups was synthesized under the condition of hydrothermal, and a series of characterizations including elemental analysis, infrared spectroscopy, PXRD, thermogravimetric analysis, and ultraviolet–visible spectroscopy were performed. It has a 3D supramolecular network structure. In order to further study the reproducible synthesis conditions, we unexpectedly got a partly protonated coordination polymer material [Cu3 (H3 TTHA)(μ3 -O)(μ3 -OH)(μ2 -H2 O)2 (H2 O)]·2H2 O (2 ), which was different from the structure of 1 and contained three uncoordinated carboxylate acid groups in the framework structure. It was found that coordination polymer 1 has good catalytic activity for the catalytic reduction of 4-NP under mild reaction conditions. In the meantime, it can be used as a sensor to detect a small amount of Fe 3+ (1 mM), and the detection limit for Fe 3+ is 21 μM. The results show that 1 possesses a good application prospect in terms of fluorescence sensing and catalysis.