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dc.contributor.author
Castro-Grijalba, Alexander
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Montes-García, Verónica
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Cordero-Ferradás, María José
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Coronado, Eduardo A.
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Pérez-Juste, Jorge
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Pastoriza-Santos, Isabel
dc.date.available
2021-10-20T19:07:22Z
dc.date.issued
2020-03
dc.identifier.citation
Castro-Grijalba, Alexander; Montes-García, Verónica; Cordero-Ferradás, María José; Coronado, Eduardo A.; Pérez-Juste, Jorge; et al.; SERS-based molecularly imprinted plasmonic sensor for highly sensitive PAH detection; American Chemical Society; ACS Sensors; 5; 3; 3-2020; 693-702
dc.identifier.uri
http://hdl.handle.net/11336/144537
dc.description.abstract
A novel hybrid plasmonic platform based on the synergetic combination of a molecularly imprinted polymer (MIP) thin film with Au nanoparticle (NPs) assemblies, noted as Au@MIP, was developed for surface-enhanced Raman scattering (SERS) spectroscopy recognition of polycyclic aromatic hydrocarbons (PAHs). While the MIP trapped the PAH close to the Au surface, the plasmonic NPs enhanced the molecule's Raman signal. The Au@MIP fabrication comprises a two-step procedure, first, the layer-by-layer deposition of Au NPs on glass and their further coating with a uniform MIP thin film. Profilometry analysis demonstrated that the thickness and homogeneity of the MIP film could be finely tailored by tuning different parameters such as prepolymerization time or spin-coating rate. Two different PAH molecules, pyrene or fluoranthene, were used as templates for the fabrication of pyrene- or fluoranthene-based Au@MIP substrates. The use of pyrene or fluoranthene, as the template molecule to fabricate the Au@MIP thin films, enabled its ultradetection in the nM regime with a 100-fold improvement compared with the nonimprinted plasmonic sensors (Au@NIPs). The SERS data analysis allowed to estimate the binding constant of the template molecule to the MIP. The selectivity of both pyrene- and fluoranthene-based Au@MIPs was analyzed against three PAHs of different sizes. The results displayed the important role of the template molecule used for the Au@MIPs fabrication in the selectivity of the system. Finally, the practical applicability of pyrene-based Au@MIPs was shown by performing the detection of pyrene in two real samples: creek water and seawater. The design and optimization of this type of plasmonic platform will pave the way for the detection of other relevant (bio)molecules in a broad range of fields such as environmental control, food safety, or biomedicine.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
American Chemical Society
dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
ENVIRONMENTAL ANALYSIS
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HYBRID NANOSTRUCTURES
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MOLECULARLY IMPRINTED POLYMERS
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PLASMONIC SENSORS
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POLYCYCLIC AROMATIC HYDROCARBONS
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SERS
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Nano-materiales
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Nanotecnología
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INGENIERÍAS Y TECNOLOGÍAS
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dc.title
SERS-based molecularly imprinted plasmonic sensor for highly sensitive PAH detection
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2021-09-06T16:39:11Z
dc.identifier.eissn
2379-3694
dc.journal.volume
5
dc.journal.number
3
dc.journal.pagination
693-702
dc.journal.pais
Estados Unidos
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dc.journal.ciudad
Washington
dc.description.fil
Fil: Castro-Grijalba, Alexander. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Investigaciones en Físico-química de Córdoba. Universidad Nacional de Córdoba. Facultad de Ciencias Químicas. Instituto de Investigaciones en Físico-química de Córdoba; Argentina. Universidad Nacional de San Luis. Facultad de Ciencias de la Salud. Laboratorio de Quimica Analitica Ambiental.; Argentina. Universidad de Vigo; España
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Fil: Montes-García, Verónica. Universidad de Vigo; España
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Fil: Cordero-Ferradás, María José. Universidad de Vigo; España
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Fil: Coronado, Eduardo A.. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Investigaciones en Físico-química de Córdoba. Universidad Nacional de Córdoba. Facultad de Ciencias Químicas. Instituto de Investigaciones en Físico-química de Córdoba; Argentina
dc.description.fil
Fil: Pérez-Juste, Jorge. Universidad de Vigo; España
dc.description.fil
Fil: Pastoriza-Santos, Isabel. Universidad de Vigo; España
dc.journal.title
ACS Sensors
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://pubs.acs.org/doi/abs/10.1021/acssensors.9b01882
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/https://doi.org/10.1021/acssensors.9b01882
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