A fluorescence quenching sensor for Fe3+ detection using (C6H5NH3)2Pb3I8·2H2O hybrid perovskite

It is an All‐Rounder! On the Development of Metal Halide Perovskite‐Based Fluorescent Sensors and Radiation Detectors

“…Recently, it was reported that the PL emission of (C 6 H 5 NH 3 ) 2 Pb 3 I 8 •2H 2 O perovskite was quenched by the addition of Fe 3+ ions solution in DMF. [47] The Fe 3+ ion concentration of around 1.0 × 10 −5 mol L −1 has almost completely quenched the PL of (C 6 H 5 NH 3 ) 2 Pb 3 I 8 •2H 2 O perovskite. Moreover, perovskite show LOD of 7.51 × 10 −8 and selectivity of 97.4 % for Fe 3+ ions.…”

“…The electron paramagnetic resonance (EPR) spectrum shows that the Fe 3+ ion concentration was deceased in the mixture of perovskite and Fe 3+ ions indicating the reduction of Fe 3+ ions, which is the possible reason for the fluorescence quenching. [46,47] Structural deformation driven fluorescence quenching is another kind of process that takes place in perovskite. The aliphatic amines vapors have quenched the fluorescence emission of CH 3 NH 3 PbBr 3 thin films.…”

“…Furthermore, Fe 3+ ions have smaller radius with high polarization and high electron gaining potential that make ions penetrate into the inorganic framework. [47] Uranyl Ions Sensing: Uranium exists in the form of uranyl ions (UO 2 2+ ) under normal conditions. The uranyl ions are toxic and harmful for humans.…”

An Organic–Inorganic Perovskitoid with Zwitterion Cysteamine Linker and its Crystal–Crystal Transformation to Ruddlesden‐Popper Phase

“…Thee xceptional properties and versatility of such hybrid systems can facilitate their applicability as aP LO n-Off-On probe for heavy metal ion detection. [60][61][62][63] Herein we therefore examined the use of perovskitoid/ FLBP composite as aP LO n-Off-On probe for 3d transition element ion detection. Thep reparation procedure of metaloleates for this study was adopted from the reported literature.…”

A fluorescence-T1MR dual-mode analysis method for Fe3+detection in serum

“…They have been developed for the detection of Fe 3+ in vivo. Simply these fluorescence sensors could be divided into fluorescence colorimetric sensors [17,18], fluorescence quenching sensors [19,20], fluorescence enhanced sensors [21,22], 'off-on' fluorescence sensors [23,24], multi responsive fluorescence sensors [25,26]. Among these methods, ratiometric fluorescence sensors that could simultaneously measure fluorescence signals at two or more high-resolution wavelengths have attracted much attention in recent years.…”