Advanced microscopies for studyng carbon-based hybrid nanomaterials

G, I. LACCONI; L. A. PÉREZ

Fortaleza

Conferencia; XXV International Conference on Raman Spectroscopy ICORS; 2016

Universidade Fortaleza

Advanced microscopies for studying carbon-based hibrid nanomaterialsLuis A. Pérez, Gabriela I. Lacconi INFIQC-Dto. Fisicoquímica, Facultad Ciencias Químicas, Universidad Nacional de Córdoba. Córdoba . Argentina. E-mail: glacconi@mail.fcq.unc.edu.arThe combination of carbon-based materials (graphene, graphene oxide, protein assemblies, etc.) with metallic nanostructures and silicon, to obtain hybrid-materials is performed using simple chemical, electrochemical and photochemical methods. We show topographical features, optical and molecular properties of diverse hybrid systems, recorded with high spatial resolution by advanced microscopies (AFM-Raman, Imaging-Raman, SNOM, SERS, TERS, DRIFTS-contrast imaging, dark field imaging):-SERS platforms of AgNPs-protein assemblies for aminoacids detection. -Graphene oxide (GO) flakes decorated with AgNPs by using electrochemical strategies. -GO-rGO hybrid pattern. Lithographic designs engraved on glass and silicon by laser radiation induction on GO films.-Network of graphene(CVD)-AuNPs. Structural changes induced in graphene by the interaction with the TERS-tip evidence the reversible defects generation and the energy transfer from the hybrid structure to the Au-tip (blue shifts of bands).All nanohybrids materials are trustworthy substrates for precise SERS chemical analysis