Multifunctional Zn(II) Coordination Polymer as Highly Selective Fluorescent Sensor and Adsorbent for Dyes.
Mohd MuddassirAbdullah AlarifiNaaser A Y AbduhWaseem Sharaf SaeedAbdulnasser Mahmoud KaramiMohd AfzalPublished in: International journal of molecular sciences (2023)
A new Zn(II)-based coordination polymer ( 1 ) comprising the Schiff base ligand obtained by the condensation of 5-aminosalicylic acid and salicylaldehyde has been synthesized. This newly synthesized compound has been characterized by analytical and spectroscopic methods, and finally, by single-crystal X-ray diffraction technique in this study. The X-ray analysis reveals a distorted tetrahedral environment around the central Zn(II) center. This compound has been used as a sensitive and selective fluorescent sensor for acetone and Ag + cations. The photoluminescence measurements indicate that in the presence of acetone, the emission intensity of 1 displays quenching at room temperature. However, other organic solvents caused meagre changes in the emission intensity of 1 . Additionally, the fluorescence intensity of 1 has been examined in the presence of different ketones viz. cyclohexanone, 4-heptanone, and 5-nonanone, to assess the interaction between the C=O group of the ketones and the molecular framework of 1 . Moreover, 1 displays a selective recognition of Ag + in the aqueous medium by an enhancement in its fluorescence intensity, representing its high sensitivity for the detection of Ag + ions in a water sample. Additionally, 1 displays the selective adsorption of cationic dyes (methylene blue and rhodamine B). Hence, 1 showcases its potential as an excellent luminescent probe to detect acetone, other ketones, and Ag + with an exceptional selectivity, and displaying a selective adsorption of cationic dye molecules.
Keyphrases
- quantum dots
- energy transfer
- aqueous solution
- room temperature
- ionic liquid
- sensitive detection
- high intensity
- high resolution
- heavy metals
- single molecule
- highly efficient
- molecular docking
- drug delivery
- magnetic resonance imaging
- risk assessment
- loop mediated isothermal amplification
- fluorescent probe
- dual energy
- structural basis
- crystal structure
- molecular dynamics simulations