info:eu-repo/semantics/article
Plasmonic Mesoporous Composites as Molecular Sieves for SERS Detection
Registro en:
López-Puente, Vanesa; Abalde-Cela, Sara; Angelome, Paula Cecilia; Álvarez Puebla, Ramón; Liz-Marzán, Luis M.; Plasmonic Mesoporous Composites as Molecular Sieves for SERS Detection; American Chemical Society; Journal of Physical Chemistry Letters; 4; 7-2013; 2715-2720
1948-7185
Autor
López-Puente, Vanesa
Abalde-Cela, Sara
Angelome, Paula Cecilia
Álvarez Puebla, Ramón
Liz-Marzán, Luis M.
Resumen
Application of surface-enhanced Raman scattering (SERS) spectroscopy to the ultrasensitive analysis of small molecules in biological samples is complicated by signal contamination by ubiquitous macromolecules such as proteins, nucleic acids, or lipids. We present a proof-of-concept study of the application of composite films comprising branched gold nanoparticles embedded in mesoporous thin films, which act as molecular sieves. The inorganic mesoporous layer only allows the diffusion of small molecules toward the plasmonic particles while preventing the contact of macromolecules in solution with the optical sensor. Fil: López-Puente, Vanesa. Universidad de Vigo; España Fil: Abalde-Cela, Sara. Universidad de Vigo; España Fil: Angelome, Paula Cecilia. Comisión Nacional de Energía Atómica. Gerencia del Área de Seguridad Nuclear y Ambiente. Gerencia de Química (CAC); Argentina Fil: Álvarez Puebla, Ramón. Universitat Rovira I Virgili; España. Centro de Tecnología Química de Cataluña; España. Institució Catalana de Recerca i Estudis Avancats (ICREA); España Fil: Liz-Marzán, Luis M.. Universidad de Vigo; España. Bionanoplasmonics Laboratory; España