Detección de PAHs mediante espectroscopía SERS sobre superficies metálicas funcionalizadas con calixarenos

J. V. García-Ramos; S. Sánchez-Cortés; P. Leyton; M. Campos-Vallette

Detección de PAHs mediante espectroscopía SERS sobre superficies metálicas funcionalizadas con calixarenos

Translated title of the contribution: Detection of PAHs on calixarene-functionalized metal surfaces by means of SERS spectroscopy

J. V. García-Ramos, S. Sánchez-Cortés, P. Leyton, M. Campos-Vallette

Research output: Contribution to journal › Article › peer-review

Abstract

Polycyclic Aromatic Hydrocarbons (PAHs) were detected at trace concentrations. In order to accomplish that, new SERS substrates were developed based on silver nanoparticles, both in suspension and immobilized in glass. These nanoparticles were covered by self-assembled calix[4]arene molecules. Among the assayed calixarene molecules the 25,27-dicarboethoxy- 26,28-dihydroxy-p-tert-butylcalix[4]arene shows a higher analytical selectivity towards PAHs integrated by four benzene rings, mainly pyrene. The interaction mechanism between the calixarene and PAHs seems to take place through a π-π stacking leading to a charge-transfer between the complex and the metal surface. This interaction seems to also induce changes in the surface charge of the metallic particles.

Translated title of the contribution	Detection of PAHs on calixarene-functionalized metal surfaces by means of SERS spectroscopy
Original language	Spanish
Pages (from-to)	227-233
Number of pages	7
Journal	Optica Pura y Aplicada
Volume	40
Issue number	2
State	Published - Jun 2007
Externally published	Yes

Cite this

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title = "Detecci{\'o}n de PAHs mediante espectroscop{\'i}a SERS sobre superficies met{\'a}licas funcionalizadas con calixarenos",

abstract = "Polycyclic Aromatic Hydrocarbons (PAHs) were detected at trace concentrations. In order to accomplish that, new SERS substrates were developed based on silver nanoparticles, both in suspension and immobilized in glass. These nanoparticles were covered by self-assembled calix[4]arene molecules. Among the assayed calixarene molecules the 25,27-dicarboethoxy- 26,28-dihydroxy-p-tert-butylcalix[4]arene shows a higher analytical selectivity towards PAHs integrated by four benzene rings, mainly pyrene. The interaction mechanism between the calixarene and PAHs seems to take place through a π-π stacking leading to a charge-transfer between the complex and the metal surface. This interaction seems to also induce changes in the surface charge of the metallic particles.",

keywords = "Calixaren, PAHs, SERS, Surface functionalization",

author = "Garc{\'i}a-Ramos, {J. V.} and S. S{\'a}nchez-Cort{\'e}s and P. Leyton and M. Campos-Vallette",

year = "2007",

month = jun,

language = "Spanish",

volume = "40",

pages = "227--233",

journal = "Optica Pura y Aplicada",

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publisher = "Sociedad Espanola de Optica",

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T1 - Detección de PAHs mediante espectroscopía SERS sobre superficies metálicas funcionalizadas con calixarenos

AU - García-Ramos, J. V.

AU - Sánchez-Cortés, S.

AU - Leyton, P.

AU - Campos-Vallette, M.

PY - 2007/6

Y1 - 2007/6

N2 - Polycyclic Aromatic Hydrocarbons (PAHs) were detected at trace concentrations. In order to accomplish that, new SERS substrates were developed based on silver nanoparticles, both in suspension and immobilized in glass. These nanoparticles were covered by self-assembled calix[4]arene molecules. Among the assayed calixarene molecules the 25,27-dicarboethoxy- 26,28-dihydroxy-p-tert-butylcalix[4]arene shows a higher analytical selectivity towards PAHs integrated by four benzene rings, mainly pyrene. The interaction mechanism between the calixarene and PAHs seems to take place through a π-π stacking leading to a charge-transfer between the complex and the metal surface. This interaction seems to also induce changes in the surface charge of the metallic particles.

AB - Polycyclic Aromatic Hydrocarbons (PAHs) were detected at trace concentrations. In order to accomplish that, new SERS substrates were developed based on silver nanoparticles, both in suspension and immobilized in glass. These nanoparticles were covered by self-assembled calix[4]arene molecules. Among the assayed calixarene molecules the 25,27-dicarboethoxy- 26,28-dihydroxy-p-tert-butylcalix[4]arene shows a higher analytical selectivity towards PAHs integrated by four benzene rings, mainly pyrene. The interaction mechanism between the calixarene and PAHs seems to take place through a π-π stacking leading to a charge-transfer between the complex and the metal surface. This interaction seems to also induce changes in the surface charge of the metallic particles.

KW - Calixaren

KW - PAHs

KW - SERS

KW - Surface functionalization

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M3 - Article

AN - SCOPUS:40549113716

SN - 0030-3917

VL - 40

SP - 227

EP - 233

JO - Optica Pura y Aplicada

JF - Optica Pura y Aplicada

IS - 2

ER -

Detección de PAHs mediante espectroscopía SERS sobre superficies metálicas funcionalizadas con calixarenos

Abstract

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