Ratiometric fluorescence sensing of Fe2+/3+ by carbon dots doped lanthanide coordination polymers

A Unique Thiosemicarbazide‐Based Colorimetric Chemosensor for Fe2+ in Pure Aqueous Solution with the Lowest Detection Limit

“…The binding mode of Hy‐bp to Fe 2+ was comprehended by 1 H NMR titration (Figure S4). With the addition of Fe 2+ to Hy‐bp , all the proton peaks broadened due to the paramagnetic nature of Fe 2+ . Meanwhile, the peak of ‐NH (H 6 ) disappeared, suggesting the deprotonation of the ‐NH.…”

Recent advances in fluorescence probes based on carbon dots for sensing and speciation of heavy metals

“…Beside Cr, there have been very few reports on the speciation of other HMs. Li et al [117] used lanthanide coordination polymers doped CDs (CDs@AMP-Tb) to detect Fe(II) and Fe(III) species based on the experimental phenomenon that CDs could be quenched explicitly by Fe(II), and Fe(III) could be detected after being reduced to Fe(II) with the help of a reducing agent of NH 2 OH•HCl. Recently, Costas-Mora et al [118] reported in situ ultrasound-assisted syntheses of CDs as optical nanoprobes to selective recognize methylmercury species ( Figure 5).…”

Fabrication of multifunctional 3D-flower-shaped NaTb(MoO4)2:Dy3+@Phen and NaTb(WO4)2:Dy3+@Phen nanoparticle materials for efficacious luminescence sensing of Fe2+ ions and photocatalytic degradation of rhodamine B in an aqueous medium

“…41 So far, numerous lanthanide-doped nanoparticles have been fabricated for the chemical sensing of Fe 2+ ions and degradation of RhB. 42,43 Such nanostructures display large optical signals that typically differ with the shape, size and morphology of the nanostructures. However, rare-earth-doped lanthanide molybdates and tungstates are gaining a lot of consideration due to their functions in photocatalysis, [44][45][46][47][48][49][50] optical fibres, thermal expansion materials, phosphors 51,52 and catalysis.…”