Abstract
The development of highly fluorescent materials for detection of environmental contaminants like chromate anions (Cr2O72−) is of great importance. Here, boric acid-coated Eu(III) metal–organic framework (Eu-MOF-B) was successfully synthesized using one pot hydrothermal conditions and further extensively characterized by several spectroscopic and microscopic techniques. The fluorescence spectroscopy investigations indicated the dual-fluorescence emission along with high stability in water. In case of presence of Cr2O72− ion in aqueous samples, the red fluorescence of Eu-MOF-B is selectively quenched but blue fluorescence is enhanced. Hence, the complex could be a potential fluorescent sensor for sensitive detection of Cr2O72− with a low limit of detection of 0.17 ppm.
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