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	Provedor de dados ArchiMer (6) Autor Peron, Olivier (6) Rinnert, Emmanuel (6) Compere, Chantal (5) De La Chapelle, M. Lamy (3) Lehaitre, Michel (3) Toury, T. (3) Colas, Florent (2) Crassous, Philippe (1) Fremaux, B. (1) Guillot, N. (1) Shen, H. (1) Mais... Palavra-chave SERS (3) PAH detection (2) Sensor (2) Silanization (2) Chemosensors (1) Flow cells (1) Freundlich isotherm (1) Functionalization (1) Gold nanoparticles (1) Gold nanostructures (1) Gradient index optics (1) In situ (1) In situ measurements (1) Lenses (1) Metamaterials (1) Microwave photonics (1) Nanoparticles (1) Optical design techniques (1) Optical fabrication (1) PAHs (1) Mais... Tipo do documento Text (6) Ano 2011 (1) 2010 (3) 2009 (2) País France (6) Idioma Inglês (6)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 6 Primeira ... 1 ... Última Detection of polycyclic aromatic hydrocarbon (PAH) compounds in artificial sea-water using surface-enhanced Raman scattering (SERS) ArchiMer Peron, Olivier; Rinnert, Emmanuel; Lehaitre, Michel; Crassous, Philippe; Compere, Chantal. This paper reports an accurate synthesis of surface-enhanced Raman scattering (SERS) active substrates, based on gold colloidal monolayer, suitable for in situ environmental analysis. Quartz substrates were functionalized by silanization with (3-mercaptopropyl)trimethoxysilane (MPMS) or (3-aminopropyl)trimethoxysilane (APTMS) and they subsequently reacted with colloidal suspension of gold metal nanoparticles: respectively, the functional groups SH and NH2 bound gold nanoparticles. Gold nanoparticles were prepared by the chemical reduction of HAuCl4 using sodium tricitrate and immobilized onto silanized quartz substrates. Active substrate surface morphology was characterized with scanning electron microscopy (SEM) measurements and gold nanoparticles... Tipo: Text Palavras-chave: Sensor; Sea water; PAH detection; SERS; Silanization; Gold nanoparticles. Ano: 2009 URL: http://archimer.ifremer.fr/doc/2009/publication-6616.pdf First Steps of in Situ Surface-Enhanced Raman Scattering During Shipboard Experiments ArchiMer Peron, Olivier; Rinnert, Emmanuel; Colas, Florent; Lehaitre, Michel; Compere, Chantal. It is shown that the surface-enhanced Raman scattering (SERS) technique can be applied to detect organic molecules during in situ experiments. To this purpose, we used trans-1,2-bis(4-pyridyl)ethylene (BPE) as a target molecule. Adsorbed on the SERS chemosensor surface and excited under laser, the vibration modes of the molecules can be identified. SERS chemosensors are based on quartz substrates functionalized by silanization and partially coated with gold nanoparticles. SERS measurements during shipboard experiments were made with a home-made in situ Raman spectrometer connected to a marinized micro-fluidic system. The device was designed to host chemosensors in order to ensure measurements with a flow cell. A theoretical limit of detection was estimated... Tipo: Text Palavras-chave: Surface-enhanced Raman scattering; SERS; Chemosensors; Flow cells; Shipboard experiments; In situ measurements; Freundlich isotherm. Ano: 2010 URL: http://archimer.ifremer.fr/doc/00016/12691/9718.pdf New SERS Substrates For Polycyclic Aromatic Hydrocarbon (PAH) Detection: Towards Quantitative SERS Sensors For Environmental Analysis ArchiMer Peron, Olivier; Rinnert, Emmanuel; Compere, Chantal; Toury, T.; De La Chapelle, M. Lamy. In the investigation of chemical pollutions, such as PAHs (Polycyclic Aromatic Hydrocarbons) at low concentration in aqueous medium, surface-enhanced Raman scattering (SERS) stands for an alternative to the inherent low cross-section of normal Raman scattering. Indeed, SERS is a very sensitive spectroscopic technique due to the excitation of the surface plasmon modes of the nanostructured metallic film. Tipo: Text Palavras-chave: Quantitative SERS sensors; Polystyrene beads; PAHs; Nanoparticles. Ano: 2010 URL: http://archimer.ifremer.fr/doc/00012/12328/9113.pdf Quantitative SERS sensors for environmental analysis of naphthalene ArchiMer Peron, Olivier; Rinnert, Emmanuel; Toury, T.; De La Chapelle, M. Lamy; Compere, Chantal. In the investigation of chemical pollutants, such as PAHs (Polycyclic Aromatic Hydrocarbons) at low concentration in aqueous medium, Surface-Enhanced Raman Scattering (SERS) stands for an alternative to the inherent low cross-section of normal Raman scattering. Indeed, SERS is a very sensitive spectroscopic technique due to the excitation of the surface plasmon modes of the nanostructured metallic film. The surface of quartz substrates was coated with a hydrophobic film obtained by silanization and subsequently reacted with polystyrene (PS) beads coated with gold nanoparticles. The hydrophobic surface of the SERS substrates pre-concentrates non-polar molecules such as naphthalene. Under laser excitation, the SERS-active substrates allow the detection and... Tipo: Text Ano: 2011 URL: http://archimer.ifremer.fr/doc/00026/13760/10890.pdf Surface enhanced Raman scattering optimization of gold nanocylinder arrays: Influence of the localized surface plasmon resonance and excitation wavelength ArchiMer Guillot, N.; Shen, H.; Fremaux, B.; Peron, Olivier; Rinnert, Emmanuel; Toury, T.; De La Chapelle, M. Lamy. We here emphasize that the surface enhanced Raman scattering (SERS) intensity has to be optimized by choosing the appropriate gold nanoparticles size for two excitation wavelengths; 632.8 and 785 nm. We discuss the role of the position and of the order of the localized surface plasmon resonance (LSPR) in such optimization for both wavelengths. At 632.8 nm, the best SERS intensity is reached for a LSPR located between the excitation and Raman wavelengths whereas at 785 nm, the LSPR should be placed outside this range. The third order of LSPR is shown to have no influence on the SERS intensity. (C) 2010 American Institute of Physics. [doi:10.1063/1.3462068] Tipo: Text Palavras-chave: Gradient index optics; Lenses; Metamaterials; Microwave photonics; Optical design techniques; Optical fabrication; Particle size. Ano: 2010 URL: http://archimer.ifremer.fr/doc/00011/12240/8970.pdf Towards in situ detection of PAH trace in sea-water using SERS-active sensors ArchiMer Peron, Olivier; Rinnert, Emmanuel; Lehaitre, Michel; Colas, Florent; Compere, Chantal. This paper reports the development of a sensor based on surface-enhanced Raman scattering (SERS) for analyses in sea-water. Polycyclic aromatic hydrocarbons (PAHs) are targeted by these sensors and their detection in situ summons up chemical synthesis and optical development. Firstly, a relevant synthesis of SERS active substrates based on gold nanostructures is presented. Different kinds of substrates have been synthesized under variable experimental conditions to modify some parameters such as i) gold shape, size and distribution and such as ii) chemical functionalization: (i) gold nanoparticles were prepared either by chemical reduction of HAuCl4 or by physical deposition. (ii) Substrates were functionalized by hydrophobic films to allow nonpolar... Tipo: Text Palavras-chave: Functionalization; Silanization; Gold nanostructures; SERS; PAH detection; Sea-water; Sensor; In situ. Ano: 2009 URL: http://archimer.ifremer.fr/doc/00012/12363/9152.pdf Registros recuperados: 6 Primeira ... 1 ... Última

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