A novel sensitive and selective chemosensor for fluorescent detection of Zn²⁺ in cosmetics creams based on a covalent post functionalized Al-MOF

Abstract

Fabrication of a material based on the Schiff base reaction to achieve covalent attachment of NH2-MIL-53(Al) and 3-formylsalicylic acid ligand (3-FSA) for fluorimetric detection of Zn2+ ions based on inhibition...

Robust and Ultrasensitive Chemosensor Based on Bifunctionalized MIL‐101(Al) for Fluorescent Detection of Ferric Ions in Serum and Pharmaceutical Tablets

“…The structure and morphology of the This proved the formation of imine groups upon the amine reaction of the NH 2 -MIL-101(Al) with the aldehyde group of the 5-FSA and some of the amino groups that may be in the pores still unreacted. [21][22][23] The new band appeared at 1648 cm À 1 in the spectrum of the 5-FSA = N-MIL-101(Al) sensor, which can be attributed to the azomethine group À C=N, confirms the formation of the imine group. The crystal structure and phase purity of [21][22][23] Here, the amine groups reacted with the 5-FSA to produce a sensor with bidentate chelates (salicylidene moiety), as shown in Scheme 1.…”

“…[21][22][23] The new band appeared at 1648 cm À 1 in the spectrum of the 5-FSA = N-MIL-101(Al) sensor, which can be attributed to the azomethine group À C=N, confirms the formation of the imine group. The crystal structure and phase purity of [21][22][23] Here, the amine groups reacted with the 5-FSA to produce a sensor with bidentate chelates (salicylidene moiety), as shown in Scheme 1. The surface morphology of the NH 2 -MIL-101(Al) and 5-FSA = N-MIL-101(Al) sensors were detected by SEM and TEM (Figure 2).…”

“…The great match between these peaks for the substrate and the 5‐FSA sensor indicates a high degree of similarity in the crystalline morphology. It also proved that the modification of the NH 2 ‐MIL‐101(Al) with 5‐FSA to form the 5‐FSA=N‐MIL‐101(Al) sensor did not affect the basic crystal lattice structure of the NH 2 ‐MIL‐101(Al) [21–23] . Here, the amine groups reacted with the 5‐FSA to produce a sensor with bidentate chelates (salicylidene moiety), as shown in Scheme 1.…”

“…Post‐synthetic modification (PSM) is a simple approach to developing large amounts of materials with flexible physical and chemical properties and chemically modifying the interior of MOFs. The amine group (‐NH 2 ) is extensively used as it is directly introduced into various MOFs during the MOF formation process [21–28] . Herein, we reported the fabrication of a novel material based on the Schiff base reaction to achieve covalent bonding of NH 2 ‐ MIL −101(Al) and the 5‐formylsalicylic acid (5‐FSA).…”

“…The amine group (-NH 2 ) is extensively used as it is directly introduced into various MOFs during the MOF formation process. [21][22][23][24][25][26][27][28] Herein, we reported the fabrication of a novel material based on the Schiff base reaction to achieve covalent bonding of NH 2 -MIL À 101(Al) and the 5-formylsalicylic acid (5-FSA). The amino-functionalized MOF; 5-FSA-N = MIL-101(Al) was utilized as a novel fluorescent sensor for Fe 3 + ions detection in environmental and pharmaceutical samples.…”