A gadolinium MOF acting as a multi-responsive and highly selective luminescent sensor for detecting o-, m-, and p-nitrophenol and Fe3+ ions in the aqueous phase. Issue 66 (29th June 2016)

• Record Type: Journal Article
• Authors: Tan, Qing-Hua; Wang, Yan-Qin; Guo, Xiao-Yu; Liu, Hou-Ting; Liu, Zhi-Liang
• Is Part Of: RSC advances. Volume 6:Issue 66(2016)
• Page Start: 61725
• Page End: 61731
• Publication Date: 2016-06-29
• Subjects: Chemistry -- Periodicals; 540.5
• DOI: 10.1039/c6ra07244e
• Languages: English
• ISSNs: 2046-2069

Abstract

Abstract : A new Gd-MOF constructed with a π-conjugated ligand shows highly luminescent selective sensing of o -, m -, and p -nitrophenol and Fe 3+ ions in an aqueous system. Abstract : A microporous Gd-MOF, [Gd6 (L)3 (HL)2 (H2 O)10 ]·18H2 O· x (solvent) (1 ), has been successfully synthesized by a solvothermal reaction between Gd(NO3 )3 ·6H2 O and the multidentate π-conjugated ligand, H4 L, which has a Lewis basic pyridyl site (H4 L = 5, 5′-(pyridine-2, 5-diyl)-isophthalic acid). The crystal structure shows that compound1 consists of Gd3 units, which are further interlinked by multicarboxylate ligands to form a 2D network. A solid sample of1 emits bright blue light, which can be assigned to H4 L ligand-centered emission. Interestingly, the luminescence of finely ground particles of1 dispersed in water shows high sensitivity and selectivity towards trace amounts of o -, m -, and p -nitrophenol (NP) and Fe 3+ ions with good linearity, which indicates that1 can be used as a multi-responsive luminescence sensor for the detection of o -, m -, and p -NP and Fe 3+ ions in an aqueous system.