A functionalized UiO-66 MOF acting as a luminescent chemosensor for selective and sensitive turn-on detection of superoxide and acetylacetone

Recent Progress in Metal-Organic Framework Based Fluorescent Sensors for Hazardous Materials Detection

“…Fluorescent characterization shows that this ultra-stable MOF allows highly sensitive real-time discrimination of acetylacetone with good reusability (high quenching efficiency K sv for acetylacetone: 2.5 × 10 5 M −1 ) and very low detection limit values (for acetylacetone: 35 μM). Recently, Ghosh et al obtained a Zr IV -based UiO-66 LMOF with sulfonamide functionality for the detection of acetylacetone [ 141 ]. The thermally activated MOF showed highly selective and sensitive fluorescent turn-on properties for superoxide (O 2 •− ) in MeOH and acetylacetone in DMF medium.…”

Two birds with one arrow: a functionalized Al(iii) MOF acts as a fluorometric sensor of dopamine in bio-fluids and a recyclable catalyst for the Biginelli reaction

“…). 14,16–20 Besides sensing, these porous, stable, and insoluble materials have also been applied for gas storage and separation, oxo-anion separation, water harvesting, oil–water separation and catalysis. 21–26…”

“…15 In recent times, various luminescent MOF materials have been utilized to detect different cations, anions, reactive oxygen species (ROS), reactive nitrogen species (RNS), antibiotics, nitro explosives and various biological signalling molecules (like H 2 S, dopamine, etc.). 14,[16][17][18][19][20] Besides sensing, these porous, stable, and insoluble materials have also been applied for gas storage and separation, oxo-anion separation, water harvesting, oil-water separation and catalysis. [21][22][23][24][25][26] In the literature, many organic reactions are available where the vacant p p -orbital of boronic acids is attacked by nucleophiles.…”

Stable bifunctional ZnII-based sensor toward acetylacetone and l-histidine via a fluorescence red shift and turn-on effect

“…Exposing acac to the environment could result in pollution and pose a threat to human health, such as headache, nausea and vomiting after inhalation. 17 To date, many fluorescent sensors based on CPs or MOFs for acac have been reported, 17–32 while most of them display fluorescence quenching (turn-off effect), 17–29 and limited sensors exhibit fluorescence enhancement (turn-on effect) and shift. 30–32 Compared with the turn-off effect, the turn-on effect has higher sensitivity and is easier to identify, and the fluorescence shift has a noticeable change of colour, which could obviously distinguish targeted substances from other analytes.…”