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| Betelu, Stephanie; Tijunelyte, Inga; Boubekeur-lecaque, Leila; Ignatiadis, Ioannis; Ibrahim, Joyce; Gaboreau, Stephane; Berho, Catherine; Toury, Timothee; Guenin, Erwann; Lidgi-guigui, Nathalie; Felidj, Nordin; Rinnert, Emmanuel; Lamy De La Chapelle, Marc. |
| Gold nanostructures (GNS) were chemically functionalized using four different diazonium salts: benzene-diazonium-tetrafluoroborate (DS), 4-decylbenzene-diazonium-tetrafluoroborate (DS-C10H21), 4-carboxybenzene-diazonium-tetrafluoroborate (DS-COOH), and 4-(aminoethyl)-benzene-diazonium-tetrafluoroborate (DS-(CH2)(2)NH2). Effective chemical grafting on GNS was shown by surface-enhanced Raman spectroscopy (SERS); aromatic ring deformations in the range of 1570-1591 cm(-1) are of particular interest. The very strong band observed around 1075 cm(-1), related to CH in-plane bending for mono- and para-substituted benzenes (coupled with ring-N stretching mode), provided further irrefutable evidence of the grafting. SERS enhancement of these two bands ascertains... |
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| Ano: 2016 |
URL: http://archimer.ifremer.fr/doc/00350/46139/46200.pdf |
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| Rinnert, Emmanuel; Berho, Catherine; Le Floch, Stephane; Vergnole, Sébastien; Lamy De La Chapelle, Marc; Toury, Timothée. |
| Le projet REMANTAS propose de développer un capteur pour rendre possible l’analyse de contaminants sur sites terrestres, côtiers ou maritimes. Les polluants ciblés, HAP, COV, BTEX, sont inscrits à la liste de la DCE ou font partie des substances candidates et/ou font partie des 100 substances les plus transportées par voie maritime. Ces trois familles de contaminants permettent de montrer l’adaptabilité du capteur en vue d’élargir le champ d’application de la technique d’analyse sur site. Les limites de détection visées sont du même ordre de grandeur que celles des techniques de référence. |
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| Ano: 2012 |
URL: http://archimer.ifremer.fr/doc/00101/21218/18833.pdf |
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| Tijunelyte, Inga; Betelu, Stephanie; Moreau, Jonathan; Ignatiadis, Ioannis; Berho, Catherine; Lidgi-guigui, Nathalie; Guenin, Erwann; David, Catalina; Vergnole, Sebastien; Rinnert, Emmanuel; Lamy De La Chapelle, Marc. |
| Here, we present a surface-enhanced Raman spectroscopy (SERS) nanosensor for environmental pollutants detection. This study was conducted on three polycyclic aromatic hydrocarbons (PAHs): benzo[a]pyrene (BaP), fluoranthene (FL), and naphthalene (NAP). SERS substrates were chemically functionalized using 4-dodecyl benzenediazonium-tetrafluoroborate and SERS analyses were conducted to detect the pollutants alone and in mixtures. Compounds were first measured in water-methanol (9:1 volume ratio) samples. Investigation on solutions containing concentrations ranging from 10−6 g L−1 to 10−3 g L−1 provided data to plot calibration curves and to determine the performance of the sensor. The calculated limit of detection (LOD) was 0.026 mg L−1 (10−7 mol L−1) for... |
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Palavras-chave: Polynuclear aromatic hydrocarbon (PAH); Surface-enhanced Raman spectroscopy (SERS); Nanosensor; Diazonium salt; Surface functionalization; Detection. |
| Ano: 2017 |
URL: http://archimer.ifremer.fr/doc/00386/49772/50316.pdf |
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