Study of Bi-directional detection for ascorbic acid and sodium nitrite based on Eu-containing luminescent polyoxometalate

Dual-ligand-functionalized dodeca-nuclear lanthanide–tungsten-cluster incorporated selenotungstates and fluorescence detection of dipicolinic acid (an anthrax biomarker)

“…4d). 46 The excitation spectrum of 4 was obtained through monitoring the emission at 613 nm, and the highest intensity peak is located at 396 nm ( 7 F 0 → 5 L 6 ) while the other peaks are situated at 320, 386, 417 and 466 nm ( 1 A 1g → 1 T 1u , 7 F 0 → 5 G 2 , 7 F 0 → 5 D 3 and 7 F 0 → 5 D 2 ) (Fig. 4e).…”

Polyoxometalates in Analytical Sciences

“…Tthe changes in absorbance and fluorescence intensities led to the determination of AA and NO2-. 162 The ions Cr 3+ and Ca 2+ were determined from the decrease (Cr 3+ ) and enhancement…”

A dual-mode system based on molybdophosphoric heteropoly acid and fluorescent microspheres for the reliable and ultrasensitive detection of alkaline phosphatase

“…Heteropoly acids are inorganic materials, consisting of oxoclusters of transition metals in highest oxidation states, typically Mo, W, and V. Because of their various merits (excellent redox activity, low toxicity, and multifarious structures), they have been arousing great attention in the fields of disease diagnostics and cancer therapy. [1][2][3][4][5] In particular, some heteropoly acids-based probes have been reported for the assay of hydrogen peroxide, 6 ascorbic acid, 7 glucose, 8 and uric acid 9 and others. 10 Apart from applications in colorimetric assays, heteropoly acids have also been used as catalysts upon combination with fluorescent probes for highly sensitive and rapid determination of biomolecules.…”