Terbium Metal Organic Framework: Microwave Synthesis and Selective Sensing of Nitrite

Publication date: Available online 7 November 2019Source: Inorganic Chemistry CommunicationsAuthor(s): Pimchanok Tapangpan, Kitt Panyarat, Chaiyos Chankaew, Kate Grudpan, Apinpus RujiwatraAbstractThe rapid and facile microwave method has been employed to synthesize [Tb2(TTHA)(H2O)4]∙9H2O (I; H6TTHA = 1,3,5-triazine-2,4,6-triaminehexaacetic acid) microcrystals. Based on the photoluminescent emission of I, which can be selectively turned off upon the coordination of nitrite, the selective determination of nitrite in water was developed without the use of Griess reagents. With the use of smartphone camera as a detector, the quantitative analysis of nitrite was conducted within the CIELAB colorimetric space, revealing the relative standard deviation of less than 5% for the working range of 3-12 μg. Sensitivity, detection limit and quantification limit of the measurements were evaluated, providing the values of 0.732 (Lcontrol/Lsample)∙μg-1, 1 μg and 3 μg, respectively.Graphical abstract

Source: Inorganic Chemistry Communications - November 9, 2019 Category: Chemistry Source Type: research