A5067010131- Advanced biosensing and bioanalysis techniques
- Molecular Junctions and Nanostructures
- Gold and Silver Nanoparticles Synthesis and Applications
- Advanced Biosensing Techniques and Applications
- Biosensors and Analytical Detection
- Advanced Nanomaterials in Catalysis
- Polyoxometalates: Synthesis and Applications
- Polymer Surface Interaction Studies
- Spectroscopy and Quantum Chemical Studies
- Quantum Dots Synthesis And Properties
- Nanocluster Synthesis and Applications
- Acoustic Wave Resonator Technologies
- Plasmonic and Surface Plasmon Research
- Catalytic Processes in Materials Science
- Electrochemical sensors and biosensors
- Monoclonal and Polyclonal Antibodies Research
- Mesoporous Materials and Catalysis
- Analytical Chemistry and Sensors
- Fullerene Chemistry and Applications
- Catalysis and Oxidation Reactions
- Radioactive element chemistry and processing
- Pigment Synthesis and Properties
- Graphene research and applications
- biodegradable polymer synthesis and properties
- Calcium Carbonate Crystallization and Inhibition
Centre National de la Recherche Scientifique
2016-2025
Laboratoire de Réactivité de Surface
2016-2025
Sorbonne Université
2016-2025
Institut des NanoSciences de Paris
2023
Nanyang Technological University
2014-2019
National University of Singapore
2019
Délégation Paris 6
2019
London Rebuilding Society
2018
Délégation Ile-de-France Villejuif
2013-2018
Université Paris Cité
2004-2015
In this work the mechanism of (3-aminopropyl)triethoxysilane (APTES) interaction with silicon surfaces is investigated at molecular level. We studied influence experimental parameters such as time, temperature, and concentration on quality APTES layer in terms chemical properties, morphology, stability aqueous medium. This was achieved using a highly sensitive IR mode recently developed, grazing angle attenuated total reflection (GA-ATR). technique provides structural information formed...
We report on a smartphone spectrometer for colorimetric detection of glucose and cardiac troponin I.
The localized surface plasmon resonance (LSPR) phenomenon provides a versatile property for biodetection. Herein, this unique feature was employed to build homogeneous optical biosensor detect staphylococcal enterotoxin A (SEA) in solution down very low levels by naked-eye readout. If the initial position of LSPR band is located cyan region, even small red shift (∼2-3 nm) induced refractive index change close nanoparticles (NPs) could make light absorption transit from green and become...
Immobilization of gold nanoparticles on planar surfaces is great interest to many scientific communities; chemists, physicists, biologists, and the various communities working at interfaces between these disciplines. Controlling immobilization step, especially dispersion coverage, an important issue for all communities. We studied parameters that can influence this interaction, starting with nature terminal chemical function. Thus, we have carefully grafted silanes terminated by either amine...
Silica surface functionalization is often done through the condensation of functional silanes on silanols, silica surfaces' terminal groups. APTES, aminopropyltriethoxysilane, widely used due to its assumed high reactivity with kinetically promoted by catalytic action amine function. Here, we revisit, based a quantitative analysis solid-state 29Si NMR, assembly this silane surfaces investigate whether presence results from grafting, i.e., hetero-condensation silanol groups or...
The facile preparation of arrays plasmonic nanoparticles over a square centimeter surface area is reported.
Protein A (PrA), mouse monoclonal anti-IgG antibody (SAb) and deglycosylated avidin (NAV) were adsorbed on gold surfaces to capture the model rabbit IgG build three immunosensing platforms. The assembling of immunosensors, their specificity, receptor accessibility monitored by polarization modulation reflection–absorption infrared spectroscopy (PM-RAIRS) quartz crystal microbalance with dissipation measurement (QCM-D) at each step. Combining these two techniques allows us compare both...
Surface nanostructuration was successfully achieved by binding the polyoxometalate (POM) (NBu4)3[PW11O39{(SiC6H4NH2)2O}] covalently onto planar gold surfaces. To do so, POMs functionalized with two terminal amino groups were synthesized and reacted a mercaptoundecanoic acid self-assembled monolayer adsorbed on gold. These amine-terminated POM macroanions proved to be remarkably efficient as nanostructuring agents. Using polarization-modulated infrared reflection absorption spectroscopy...
The interaction of incident light with noble metal nanoparticles engenders a fascinating phenomenon known as localized surface plasmon resonance (LSPR). This results in the presence single or multiple intense absorption bands visible to near-infrared spectral range whose position is affected by refractive index surrounding medium. In this comprehensive study, we thoroughly investigated experimental parameters governing size, aspect ratio, and optical properties hollow gold nanoshells...
Colorimetric immunoassays using gold nanoparticles (AuNP) form a special class of assays where AuNP act as transducer to monitor binding events between an antigen and antibody. Indeed, display unique optical properties that can been exploited in various ways develop biosensors. One the most striking colloidal (and more generally noble metal nanomaterials) is their extremely high extinction coefficient visible range spectrum owing localized surface plasmon resonance (LSPR) phenomenon. This...