| 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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Pasricha, Renu
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (34/34 displayed)
- 2022Synthesis of Self-Assembled Single Atomic Layer Gold Crystals-Goldenecitations
- 2021Designing and development of polyvinylpyrrolidone-tungsten trioxide (PVP-WO3) nanocomposite conducting film for highly sensitive, stable, and room temperature humidity sensingcitations
- 2018Dual photoluminescence and charge transport in an alkoxy biphenyl benzoate ferroelectric liquid crystalline-graphene oxide compositecitations
- 2017Surface Functionalization of Biomaterialscitations
- 2017Preparation and characterisation of silk fibroin–silver nanoparticles (SF–AgNPs) composite filmscitations
- 2016Synthesis and characterization of ring shaped spermine mediated nanogold assemblies at the air water interface
- 2015Optical Properties of Silver Nanoparticles Integrated Graphene Oxide Thin Films on Glass and Silicon Substratescitations
- 2013Graphene oxide-chitosan nanocomposite based electrochemical DNA biosensor for detection of typhoidcitations
- 2013Gold-nanoparticle-decorated boron nitride nanosheetscitations
- 2012Carbon nanotubescitations
- 2012Ultra-low level optical detection of mercuric ions using biogenic gold nanotrianglescitations
- 2011Copper nanoparticles synthesis from electroplating industry effluentcitations
- 2011Magnetite/CdTe magnetic-fluorescent composite nanosystem for magnetic separation and bio-imagingcitations
- 2011Fabrication and characterization of Al-matrix composites reinforced with amino-functionalized carbon nanotubescitations
- 2011Fabrication of al-matrix composites reinforced with amino functionalized boron nitride nanotubescitations
- 2010Synthesis of Gold Nanoparticles by Leaves of Zero-Calorie Sweetener Herb (Stevia rebaudiana) and Their Nanoscopic Characterization by Spectroscopy and Microscopycitations
- 2006Thermally assisted semiconductor-like to insulator transition in gold-poly(methyl methacrylate) nanocompositescitations
- 2005Polycondensation in liquid crystalline phases of nonionic surfactants. Kinetics and morphologycitations
- 2005A coprecipitation technique to prepare BaNb2O6citations
- 2005Polymerization in surfactant liquid crystalline phasescitations
- 2005Synthesis and analysis of ZnO and CdSe nanoparticlescitations
- 2005Preparation of nanocrystalline ferroelectric CaBi2Ta 2O9 by the urea methodcitations
- 2005Preparation of ferroelectric BaNb2O6 by the urea methodcitations
- 2005Synthesis of Sr0.5Ba0.5Nb2O6 by urea methodcitations
- 2005Deposition and characterization of silver nano-films by a novel solid liquid interface reaction technique (SLIRT)citations
- 2004Size dependent redox behavior of monolayer protected silver nanoparticles (2-7 nm) in aqueous mediumcitations
- 2004Phase transfer of platinum nanoparticles from aqueous to organic solutions using fatty amine moleculescitations
- 2004Use of aqueous foams for the synthesis of gold nanoparticles of variable morphologycitations
- 2004A low-temperature, soft chemistry method for the synthesis of zirconia nanoparticles in thermally evaporated fatty amine thin filmscitations
- 2004Solvent-assisted one-pot synthesis and self-assembly of 4-aminothiophenol-capped gold nanoparticlescitations
- 2004One-step synthesis of ordered two-dimensional assemblies of silver nanoparticles by the spontaneous reduction of silver ions by pentadecylphenol langmuir monolayerscitations
- 2004A low temperature route to prepare BaNb2O6citations
- 2004Variation in morphology of gold nanoparticles synthesized by the spontaneous reduction of aqueous chloroaurate ions by alkylated tyrosine at a liquid-liquid and air-water interfacecitations
- 2003Assembling gold nanoparticles in solution using phosphorothioate DNA as structural interconnects
Places of action
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article
Solvent-assisted one-pot synthesis and self-assembly of 4-aminothiophenol-capped gold nanoparticles
Abstract
<p>Single-step preparation of smaller sized (ca. 3 nm, approximate composition Au<sub>923</sub>ATP<sub>241</sub>) gold nanoparticles (AuNPs) followed by their self-assembly is demonstrated using 4-aminothiophenol (ATP) as a reducing agent in water/N,N-dimethylformamide (DMF). Water and DMF play a crucial role during the reduction process, since nanoparticles are formed neither in water nor in DMF alone at room temperature. Moreover, the morphology of the particles is found to be strongly dependent on the pH of the medium. The instantaneous UV-visible absorption spectrum shows a relatively sharp peak at 550 nm, which becomes a broad band after 1 h of mixing, due to the formation of aggregates. The size of the gold nanoparticles is controlled in the stipulated range by maintaining a critical AuCl<sub>4</sub><sup>-</sup>/ATP ratio. Transmission electron microscopic images reveal close-packed assembly of gold nanoparticles induced by the bifunctionality of ATP. Powder X-ray diffraction patterns confirm the metallic face-centered cubic (fee) lattice structure with (111), (200), (220), and (311) crystal planes. Thermogravimetric analysis shows 22% organic molecules on the surface of AuNPs. The molecular level analysis of the as prepared gold nanoparticles by Fourier transform infrared spectrum shows the presence of -SO stretching. X-ray photoelectron spectroscopic results also confirm the oxidation of -SH during the reduction of AuCl<sub>4</sub> <sup>-</sup> ions. The cyclic voltammograms of the monolayer-protected Au nanoparticles show quasi-reversible redox behavior, though the electrochemical features are different from those of the self-assembled monolayer (SAM) of ATP on a gold electrode.</p>