TY - JOUR
T1 - Selective molecular recognition of polycyclic aromatic hydrocarbons (PAHs) on Calix[4]arene-functionalized Ag nanoparticles by surface-enhanced raman scattering
AU - Leyton, P.
AU - Sanchez-Cortes, S.
AU - Garcia-Ramos, J. V.
AU - Domingo, C.
AU - Campos-Vallette, M.
AU - Saitz, C.
AU - Clavijo, R. E.
PY - 2004/11/11
Y1 - 2004/11/11
N2 - Trace concentrations of polycyclic aromatic hydrocarbons (PAHs) have been successfully detected using surface-enhanced Raman scattering (SERS) spectroscopy. For such purpose, new SERS substrates have been developed, consisting of Ag nanoparticles, either in suspension or immobilized on glass, obtained by a new method and covered by adsorbed self-assembled calix[4]arene molecules. Among the assayed calix[4]arenes, the 25,27-dicarboethoxy-26,28- dihydroxy-p-tert-butylcalix[4]arene host molecule displays analytical selectivity to the PAH guest systems bearing four benzene rings, mainly pyrene. The host - guest interaction mechanism seems to take place through a π-π stacking interaction leading to a charge transfer between the complex and the metallic surface, which may also induce a notable influence on the surface charge of the metallic nanoparticle.
AB - Trace concentrations of polycyclic aromatic hydrocarbons (PAHs) have been successfully detected using surface-enhanced Raman scattering (SERS) spectroscopy. For such purpose, new SERS substrates have been developed, consisting of Ag nanoparticles, either in suspension or immobilized on glass, obtained by a new method and covered by adsorbed self-assembled calix[4]arene molecules. Among the assayed calix[4]arenes, the 25,27-dicarboethoxy-26,28- dihydroxy-p-tert-butylcalix[4]arene host molecule displays analytical selectivity to the PAH guest systems bearing four benzene rings, mainly pyrene. The host - guest interaction mechanism seems to take place through a π-π stacking interaction leading to a charge transfer between the complex and the metallic surface, which may also induce a notable influence on the surface charge of the metallic nanoparticle.
UR - http://www.scopus.com/inward/record.url?scp=8744295828&partnerID=8YFLogxK
U2 - 10.1021/jp047949i
DO - 10.1021/jp047949i
M3 - Article
AN - SCOPUS:8744295828
VL - 108
SP - 17484
EP - 17490
JO - Journal of Physical Chemistry B
JF - Journal of Physical Chemistry B
SN - 1520-6106
IS - 45
ER -