Tb(III) chelates exhibit intense hot electron-induced electrogenerated chemiluminescence during cathodic polarization of metal/polystyrene-graphite (M/PG) electrodes in fully aqueous solutions. The M/PG working electrode provides a sensitive means for the determination of aromatic Tb(III) chelates at nanomolar concentration levels with a linear log-log calibration curve spanning more than five orders of magnitude. The charge transport and other properties of these novel electrodes were studied by electrochemiluminescence measurements and cyclic voltammetry. The present composite electrodes can by utilized both under pulse polarization and DC polarization unlike oxide-coated metal electrodes which do not tolerate cathodic DC polarization. The present cost-effective electrodes could be utilized e.g. in immunoassays where polystyrene is extensively used as a solid phase for various bioaffinity assays by using electrochemiluminescent Tb(III) chelates or e.g. Ru(bpy)as labels.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1016/j.aca.2017.07.035 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Octadentate Bispidine Chelators for Tb(III) Complexation: Pyridine Carboxylate versus Pyridine Phosphonate Donors.
Inorg Chem
December 2024
Equipe de Synthèse pour l'Analyse, Université de Strasbourg, CNRS, IPHC UMR 7178, Strasbourg F-67 087, France.
Article Synopsis
- Bispidine chelators are effective for creating stable metal complexes, and this study focuses on developing new terbium(III) complexes for medical imaging using bispidine-based ligands.
- The two synthesized complexes, differentiated by pyridine-phosphonate and picolinate subunits, exhibit distinct conformations and protonation schemes, affecting their stability and behavior.
- Notably, one complex shows remarkable kinetic inertness in various environments, retaining stability over extended periods, while also displaying bright luminescence, which is promising for imaging applications.
Effect of structure on sensing performance of nitro explosives with high sensitivity and mechanism of two Tb(III) coordination polymers.
Spectrochim Acta A Mol Biomol Spectrosc
January 2025
College of Chemistry and Chemical Engineering, Laboratory of New Energy and New Function Materials, Shaanxi Key Laboratory of Chemical Reaction Engineering, Yan'an University, Yan'an 716000, PR China.
Article Synopsis
- - The study examines how using a specific N-containing ligand changes the structure of coordination polymers, reducing dimensions from a 2D network (CP1) to a 1D chain (CP2), both containing terbium (Tb) ions with luminescent properties.
- - The two polymers exhibit different fluorescence sensing capabilities for substances like cefixime and fluridine, with CP1 managing nitrobenzene detection, while CP2 is more effective for 4-nitrophenol and Fe ions due to its structural differences.
- - Experimental and theoretical approaches are used to understand the fluorescence sensing mechanisms, and it is noted that CP1 demonstrated superior results in detecting Flu residues in real-world situations, indicating that the ligand
Fabrication of a Terbium-Functionalized Cadmium Organic Framework with Proper Energy Levels as a Ratiometric Probe of an Anthrax Biomarker.
Inorg Chem
July 2024
College of Chemistry and Pharmaceutical Sciences, Qingdao Agricultural University, Changcheng Road 700, Chengyang District, Qingdao 266109, China.
Anthrax bacillus is a very dangerous zoonotic pathogen that seriously endangers public health. Rapid and accurate qualitative and quantitative detection of its biomarkers, 2,6-dipicolinic acid (DPA), is crucial for the prevention and treatment of this pathogenic bacterium. In this work, a novel Cd-based MOF (TTCA-Cd) has been synthesized from a polycarboxylate ligand, [1,1':2',1″-terphenyl]-4,4',4″,5'-tetracarboxylic acid (HTTCA), and further doped with Tb(III), forming a dual-emission lanthanide-functionalized MOF hybrid (TTCA-Cd@Tb).
View Article and Find Full Text PDFIntensity and lifetime ratiometric luminescent thermometer based on a Tb(III) coordination polymer.
Dalton Trans
February 2024
Instituto de Química, Universidade Federal de Alfenas, Campus Santa Clara, Alfenas, MG, 37133-840, Brazil.
A three-dimensional terbium(III) coordination polymer of formula [Tb(bttb)(2,5-pzdc)] (1) [Hbttb = 1,2,4,5-tetrakis(4'-carboxyphenyl)benzene and H-2,5-pzdc = 2,5-pyrazinedicarboxylic acid] was obtained under hydrothermal conditions. The bttb tetraanion in 1 adopts the bridging and chelating-bridging pseudo-oxo coordination modes while the 2,5-pzdc dianion exhibits a rather unusual bis-bidentate bridging pseudo-oxo coordination mode, both ligands being responsible for the stiffness of the resulting 3D structure. Solid-state photoluminescent measurements illustrate that 1 exhibits remarkable green luminescence emission, the most intense band occurring in the region of 550 nm (D → F) with lifetimes at the millisecond scale.
View Article and Find Full Text PDFTerbium and Europium Chlorocyananilate-Based 2D Coordination Polymers.
Molecules
September 2023
Department of Chemical and Geological Sciences, University of Cagliari, Highway 554, Crossroads for Sestu, I-09042 Monserrato, Italy.
Two-dimensional layered coordination polymers based on the hetero-substituted 3-chloro-6-cyano-2,5-dihydroxybenzoquinone ligands, hereafter ClCNAn anilate, and Ln ions (Tb and Eu) are reported. Compounds and , formulated as Ln(ClCNAn)(DMSO) (Ln = Tb, ; Eu, ), and their related intermediates and , formulated as Ln(ClCNAn)(HO)·yHO (x + y likely = 12, Ln = Tb, ; and Eu, ), were prepared by a conventional one-pot reaction (the latter) and recrystallized from DMSO solvent (the former). Polyhydrated intermediates and show very similar XRPD patterns, while, despite their common stoichiometry, and are not isostructural.
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!