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A water-stable metal-organic framework (MOF) EuNDC has been synthesized for selective detection of the well-known contaminant and toxicant picric acid (PA) in aqueous solution. Due to the photo-induced electron transfer and self-absorption mechanism, EuNDC displayed rapid, selective and sensitive detection of PA with a detection limit of 37.6 ppb. Recyclability experiments revealed that EuNDC retains its initial luminescent intensity and same quenching efficiency in each cycle, suggesting high photostability and reusability for long-term sensing applications. The excellent detection performance of EuNDC makes it a promising PA sensing material for practical applications. [ABSTRACT FROM AUTHOR]

A near infrared luminescent MOFs thermometer (Nd 0.676 Yb 0.324 BTC) was prepared via a simple solvothermal method using Ln 3+ (Ln=Nd, Yb) ions and 1, 3, 5-benznenetricarboxylic acid (H 3 BTC), and characterized by PXRD, TGA, ICP, and photoluminescence (PL) spectrum. These results indicate that the Nd 0.676 Yb 0.324 BTC displays high relative sensitivity and excellent repeatability in the physiological temperature range (288–323 K), and the maximum relative sensitivity is determined to be 1.187% K −1 at 323 K. These NIR luminescent MOFs may have potential applications in physiological temperature sensing. [ABSTRACT FROM AUTHOR]

Design and synthesis of a series of isostructural lanthanide metal-organic frameworks (LnMOFs) serving as phosphors by coordinate the H 2 TIPA (5-(1 H -tetrazol-5-yl)isophthalic acid) ligands and lanthanide ions is reported. The color of the luminescence can be tuned by adjusting the relative concentration of the lanthanide ions in the host framework GdTIPA , and near-pure-white light emission can be achieved. [ABSTRACT FROM AUTHOR]