| 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
Novel small stable gold nanoparticles bearing fluorescent cysteine-coumarin probes as new metal-modulated chemosensors
Abstract
<p>Emissive molecular probes based on amino acid moieties are very appealing because of their application as new building blocks in peptide synthesis. Two new bioinspired coumarin probes (L1 and L2) were synthesized and fully characterized by elemental analysis, infrared, <sup>1</sup>H NMR, <sup>13</sup>C NMR, UV-vis absorption and emission spectroscopy, matrix-assisted laser desorption-ionization time-of-flight mass spectrometry (MALDI-TOF-MS), lifetime measurements, and X-ray crystal diffraction. Their sensing ability toward alkaline earth, transition, and post-transition metal ions (Ca <sup>2+</sup>, Zn <sup>2+</sup>, Cd <sup>2+</sup>, Cu <sup>2+</sup>, Ni <sup>2+</sup>, Hg <sup>2+</sup>, Ag <sup>+</sup>, and Al <sup>3+</sup>) and their acid-base behavior (H <sup>+</sup>, OH <sup>-</sup>) were explored in absolute ethanol by absorption and fluorescence spectroscopy. Compound L1 shows a strong complexation constant with the soft metal ions Zn <sup>2+</sup>, Cd <sup>2+</sup>, and Ag <sup>+</sup>. Compound L2 shows a high fluorescence quantum yield, and it could be used as a non-pH-dependent fluorescent biological probe. Very small gold nanoparticles (AuNPs) using compounds L1 and L2 as stabilizers were obtained by using a reductive method and were characterized by UV-vis, light scattering, and transmission electron microscopy (TEM). Dynamic light scattering and TEM studies show that the formation of small nanoparticles is around 4.27 ± 0.64 nm for L1 and around 2.69 ± 0.96 nm for L2. The new stable Cou@AuNPs behaved as supramolecular chemosensors, which have been selective for the heavy element Hg <sup>2+</sup>, with a concomitant change of color from pink to dark red/brown and an increase of size up to 100-fold.</p>