Multifunctional Luminescent Eu(III)-Based Metal–Organic Framework for Sensing Methanol and Detection and Adsorption of Fe(III) Ions in Aqueous Solution

• DOI: 10.1021/acs.inorgchem.6b01815
• Publication Date: 2016-11-30T15:04:41Z
• Authors: Jian Wang; Min Jiang; Ling Yan; Ren Peng; Mengjie Huangfu; Xinxin Guo; Yang Li; Pengyan Wu
• Keywords: Luminescence; Methanol; Water; Crystallography, X-Ray; Ferric Compounds; 01 natural sciences; 0104 chemical sciences; Solutions; Europium; Spectrophotometry, Ultraviolet; Adsorption; Organic Chemicals

A novel lanthanide–organic framework (Eu–HODA), consisting of 2,2′,3,3′-oxidiphthalic acids as efficient sensitizing units, is assembled and characterized. Eu–HODA features rare chiral helical channels despite the achiral nature H4ODA. It found that this MOF shows a unique luminescent response to methanol, in contrast n-propanol ethanol. reveals turn-off luminescence switching initiated by acetone molecules with an EC50 0.03 vol %, which below occupational exposure limit stipulated American Conference Governmental Industrial Hygienists. Furthermore, it also exhibits high sensitivity (Stern–Volmer constant KSV = 2.09 × 104 L/mol) low detection (6.4 ppb) for Fe3+ ions pure water because existence uncoordinated carboxyl groups within open frameworks. Eu–HODA-based test paper provides simple reliable method practical applications.