A series of dual-lanthanide metal-organic frameworks (MOFs: DyCe-BTC) have been successfully prepared by hydrothermal method using dysprosium (Dy) and cerium (Ce) ions as metal sources and 1,3,5-benzenetricarboxylic acid (HBTC) as organic ligand, confirmed by XRD patterns and FT-IR spectra, and then the luminescence property, the application in detecting small organic molecules and structural stability have been discussed. Among the samples, DyCe-BTC exhibited two strongest emission peaks located at 485 nm and 578 nm under the excitation at 295 nm, which are attributed to the excited electronic transitions of Dy from F to H and H. However, DyCe-BTC immersed in the solution of acetaldehyde (AH) demonstrated an obvious luminescence quenching with the calculated quenching constant (K) and the limit of detection (LOD) as 7.08 × 10 M, 5.36 × 10 M and high selectivity among the other tested organic solvents. Meanwhile, it revealed that the MOF could maintain good microstructural and recycle stability in deionized water, indicating a great potential as a turn-off fluorescent sensor for AH detection. Besides, the luminescence quenching mechanism was deduced from competitive absorption.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1007/s10895-025-04242-w | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
A Turn-Off Fluorescent Sensor (DyCe-BTC) for Detection of Acetaldehyde with High Sensitivity and Selectivity.
J Fluoresc
March 2025
College of Materials Science and Engineering, Sichuan University, Chengdu, 610065, People's Republic of China.
A series of dual-lanthanide metal-organic frameworks (MOFs: DyCe-BTC) have been successfully prepared by hydrothermal method using dysprosium (Dy) and cerium (Ce) ions as metal sources and 1,3,5-benzenetricarboxylic acid (HBTC) as organic ligand, confirmed by XRD patterns and FT-IR spectra, and then the luminescence property, the application in detecting small organic molecules and structural stability have been discussed. Among the samples, DyCe-BTC exhibited two strongest emission peaks located at 485 nm and 578 nm under the excitation at 295 nm, which are attributed to the excited electronic transitions of Dy from F to H and H. However, DyCe-BTC immersed in the solution of acetaldehyde (AH) demonstrated an obvious luminescence quenching with the calculated quenching constant (K) and the limit of detection (LOD) as 7.
View Article and Find Full Text PDFSynthesis of trypsin-protected CsPbCl fluorescent nanocrystals for hydroxyl radical sensing.
Mikrochim Acta
March 2025
Department of Chemistry, Research Institute of Chem-Bio Diagnostic Technology, Chung-Ang University, 84, Heukseok-Ro, Dongjak-Gu, Seoul, 06974, Republic of Korea.
Water-dispersible perovskite nanocrystals (PNCs) show promising applications in recognizing ionic and molecular species because of their excellent optical properties. However, lead halide PNCs have some limitations when they are used as probes for molecular species sensing in aqueous media. Here, we introduce trypsin (Try) as a bioligand for the synthesis of cesium lead chloride (CsPbCl) PNCs with high water stability.
View Article and Find Full Text PDFHighly Selective Pyrene-Anchored Halloysite Nanotube for Fluorometric Determination of 2,4,6-Trinitrophenol in Environmental and Food Samples.
ACS Omega
March 2025
Department of Chemistry, Gebze Technical University, Kocaeli 41400, Türkiye.
2,4,6-Trinitrophenol (TNP) is explosive, toxic, ecological, and a human health hazard and is resistant to degradation. It can cause symptoms such as headache, loss of appetite, dizziness, fever, nausea, diarrhea, and vomiting when inhaled. In this study, we aimed to develop a new halloysite nanotube anchored with pyrene moieties () for the sensitive determination of TNP in soil, wastewater, and food samples using fully aqueous media.
View Article and Find Full Text PDFTryptophan-functionalized gold nanoclusters used as a fluorescence sensor for alizarin determination.
Spectrochim Acta A Mol Biomol Spectrosc
February 2025
College of Chemistry and Materials, Taiyuan Normal University, Jinzhong 030619, PR China.
In terms of the superior performance of gold nanoclusters (Au NCs) and the ubiquitous tryptophan in higher plants, tryptophan stabilized gold nanoclusters (Try@Au NCs) were synthesized through chemical reduction method. The uniformly dispersed Au NCs emitted blue fluorescence at 448 nm when the excitation wavelength was located at 368 nm. On the basis of inner filter effect, Try@Au NCs was used as a turn-off fluorescence nanoprobe for simple and quick detection of alizarin.
View Article and Find Full Text PDFIsoquinoline-Fused Benzimidazoles Based Highly Selective Fluorogenic Receptors for Detection of Cu, Fe, and Cl Ions: Cytotoxicity and HepG2 Cancer Cell Imaging.
Luminescence
March 2025
Department of Genetic Engineering, Madurai Kamaraj University, Madurai, India.
An efficient isoquinoline-fused benzimidazole-based "turn-on" fluorescence receptor 9,10-bis(2-phenylhydrazineyl)-7H-benzo[de]imidazo[2,1-a]isoquinolin-7-one OXPH(ANQ) and "turn-off" fluorescence receptor 9,10-bis((3-(1H-imidazol-1-yl)propyl)amino)-7H-benzo[de]imidazo[2,1-a]isoquinolin-7-one OXPID(ANQ) were prepared and characterized by various spectral techniques. The sensing behavior of receptors was demonstrated by UV-vis and fluorescence experiments, and naked-eye detection exhibited prominent visual emission color change toward Cu/Cl and Fe over other testing cations/anions in DMSO:water (9:1, ν/v) solution. The 1:1 binding stoichiometry was confirmed by Job's plot, FT-IR, mass spectral titration, and also DFT studies with target ions as evidence for the binding nature of OXPH(ANQ)/OXPID(ANQ) with Cu/Cl and Fe ions, respectively.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!