| People | Locations | Statistics |
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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Lodeiro, Carlos
Universidade Nova de Lisboa
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (25/25 displayed)
- 2023Diphenyl ditelluride assisted synthesis of noble metal-based silver-telluride 2D organometallic nanofibers with enhanced aggregation-induced emission (AIE) after oleylamine treatment
- 2020Thermochromic and acidochromic properties of polymer films doped with pyridyl-β-diketonate boron(III) complexescitations
- 2020Aggregation-induced emission enhancement (AIEE)-active Pt(II) metallomesogens as dyes sensitive to Hg2+ and dopant agents to develop stimuli-responsive luminescent polymer materialscitations
- 2019Highly accessible aqueous synthesis of well-dispersed dendrimer type platinum nanoparticles and their catalytic applicationscitations
- 2019Exploring the control in antibacterial activity of silver triangular nanoplates by surface coating modulationcitations
- 2017Synthesis and Characterization of PtTe2 Multi-Crystallite Nanoparticles using Organotellurium Nanocompositescitations
- 2017Supercritical CO2-assisted spray drying of strawberry-like gold-coated magnetite nanocomposites in chitosan powders for inhalationcitations
- 2017Synthesis and characterization of PtTeâ‚‚ multi-crystallite nanoparticles using organotellurium nanocomposites
- 2017A seleno-pyrene selective probe for Hg2+ detection in either aqueous or aprotic systemscitations
- 2016The interaction of Hg2+ and trivalent ions with two new fluorescein bio-inspired dual colorimetric/fluorimetric probescitations
- 2016Study of multiporphyrin compounds as colorimetric sitting-atop metal complexescitations
- 2016Novel trans-disubstituted hexaaza-macrocyclic ligands containing pyridine head units: Synthesis, disubstitution and colorimetric propertiescitations
- 2015Novel nanocomposites based on a strawberry-like gold- coated magnetite (Fe@Au) for protein separation in multiple myeloma serum samplescitations
- 2014Columnar discotic Pt(II) metallomesogens as luminescence multifunctional materials with chemo and thermosensor abilitiescitations
- 2014A new 3,5-bisporphyrinylpyridine derivative as a fluorescent ratiometric probe for zinc ionscitations
- 2014Bioinspired Functionalized Nanoparticles as Tools for Detection, Quantification and Targeting of Biomolecules
- 2013Zn 2+ /Cd 2+ optical discrimination by fluorescent chemosensors based on 8-hydroxyquinoline derivatives and sulfur-containing macrocyclic unitscitations
- 2013Zn2+/Cd2+ optical discrimination by fluorescent chemosensors based on 8-hydroxyquinoline derivatives and sulfur-containing macrocyclic unitscitations
- 2012New quinoline α-diimine ligands as fluorescent probes for metal ions: Ultrasound-assisted and conventional synthetic methodscitations
- 2012Novel emissive phenylurea-based macrocyclic chemosensor: Synthesis, fluorescent and complexation studiescitations
- 2012Novel emissive podands based on 8-OH-quinoline: Synthesis, fluorescence materials, DFT and complexation studiescitations
- 2011Novel small stable gold nanoparticles bearing fluorescent cysteine-coumarin probes as new metal-modulated chemosensorscitations
- 2011Bio-inspired systems for metal ion sensing : new emissive peptide probes based on benzo[d]oxazole derivatives and their gold and silica nanoparticlescitations
- 2010Hg2+ detection by new anthracene pendant-arm derivatives of mixed N/S- and N/S/O-donor macrocycles: Fluorescence, matrix-assisted laser desorption/ionization time-of-flight mass spectrometry and density functional theory studiescitations
- 2003Complexation of aluminum(III) by anthocyanins and synthetic flavylium salts: a source for blue and purple colorcitations
Places of action
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article
A seleno-pyrene selective probe for Hg2+ detection in either aqueous or aprotic systems
Abstract
<p>A new fluorescent molecular probe (compound 7) assembled from the amide bond between the 1-pyrenecarboxylic acid (6) and 2-(butylselenyl)ethanamine (5) was designed, synthesized and its structure accurately characterized. The photophysical properties of 7 were evaluated among a wide range of metallic cations (Na<sup>+</sup>, K<sup>+</sup>, Ca<sup>2+</sup>, Co<sup>2+</sup>, Ni<sup>2+</sup>, Cu<sup>2+</sup>, Zn<sup>2+</sup>, Cd<sup>2+</sup>, Pb<sup>2+</sup>, Hg<sup>2+</sup>, Ag<sup>+</sup>, Al<sup>3+</sup>, Fe<sup>3+</sup>, Ga<sup>3+</sup>and Cr<sup>3+</sup>) in water and in acetonitrile, which showed selective interaction with Hg<sup>2+</sup>. However, the sensing mechanism was found to be different in each solvent. Dynamic light scattering (DLS) studies revealed that compound 7 organizes itself as monodisperse aggregates in aqueous solution, nonetheless, as Hg<sup>2+</sup> was added to the aqueous solution, disruption of aggregates was observed, resulting in a coordination complex under strong CHEQ (Chelation-Enhanced Fluorescent Quenching). Conversely, in acetonitrile solution, 7 exhibited monomeric pyrene emissive pattern and, as the addition of Hg<sup>2+</sup> proceeded, a coordination compound of excimer-type fluorescence emission was observed. UV–vis absorption, steady state, and time-resolved emission spectroscopy were employed. The stoichiometry of the 7-Hg<sup>2+</sup> complexes was found to be 1:1 for both aqueous (log β = 6.19 ± 0.009) and acetonitrile (log β = 8.59 ± 0.04) solutions. The lowest value of a detectable amount of 0.15 μmol/L for Hg<sup>2+</sup> was achieved for fluorescence measurements in aqueous solution. The aqueous system was applied for the detection of Hg<sup>2+</sup> in real samples of spring water, where the added amounts of the analyte could be detected and quantified.</p>