Pillar-Layered Metal-Organic Frameworks for Sensing Specific Amino Acid and Photocatalyzing Rhodamine B Degradation

Abstract

Metal-organic frameworks (MOFs) have presented potential for detection of specific species and catalytic application due to their diverse framework structures and functionalities. In this work, two novel pillar-layered MOFs [Cd6(DPA)2(NTB)4(H2O)4]n·n(DPA·5DMA·H2O) (1) and [Cu2(DPA)(OBA)2]n·n(2.5DMF·H2O) (2) [DPA = 2,5-di(pyridin-4-yl)aniline, H3NTB = 4,4′,4′′-nitrilotribenzoic acid, H2OBA = 4,4′-oxydibenzoic acid, DMA = N,N-dimethylacetamide, DMF = N,N-dimethylformamide] were successfully synthesized and structurally characterized. Both 1 and 2 have three-dimensional framework structures. The fluorescent property of 1 makes it possible for sensing specific amino acid such as L-glutamic acid (Glu) and L-aspartic acid (Asp). While MOF 2 was found to be suitable for photocatalytic degradation of Rhodamine B (RhB) in the presence of H2O2. The results imply that MOFs are versatile and metal centers are important in determining their properties.

A two-fold interpenetrated Zn(II) organic framework based on mixed ligands: Synthesis, crystal structure, and properties

“…Also in the presence of SNUT-6 , the concentrations of RhB, MB, and MO(C) varied with the reaction time ( t ) (Figure 9), indicating that the degradation rate of the dye was close to 79.7%, 93.9%, and 57%, respectively, after periods of 180, 140, and 140 min. Compared with the reported reference, 38 the photocatalytic degradation of rhodamine by molecular SNUT-6 was slightly weaker. In addition, compared with RhB and MO, SNUT-6 exhibited a higher degradation rate with MB.…”

Review on Carbon Dot-Based Fluorescent Detection of Biothiols

“…As discussed in earlier sections, the performance of the CD–metal complex-mediated biothiols detection and quantification is comparable to many metal complex-mediated sensors [ 156 , 157 , 158 ], which is worthy of attention.…”