TY - JOUR
T1 - Platinum nanoparticles homogenously decorating multilayered reduced graphene oxide for electrical nanobiosensor applications
AU - Proa-Coronado, Sergio
AU - Vargas-García, Jorge R.
AU - Manzo-Robledo, Arturo
AU - Mendoza-Acevedo, Salvador
AU - Villagómez, Carlos J.
AU - Mercado-Zúñiga, Cecilia
AU - Muñoz-Aguirre, Narcizo
AU - Villa-Vargas, Luis A.
AU - Martinez-Rivas, Adrian
N1 - Publisher Copyright:
© 2018 Elsevier B.V.
PY - 2018/7/31
Y1 - 2018/7/31
N2 - Multilayered reduced graphene oxide decorated homogenously with Platinum nanoparticles (rGO/Pt) was confirmed by Transmission Electron Microscopy and X-ray diffraction. It was found that the rGO/Pt flakes were suitable for adsorbing biomolecules in one step with the use of carbon disulfide (CS2) based compound. In this context, the adsorption-interaction of CS2 and Human Serum Albumin biomolecules on rGO/Pt (forming Platinum dithiocarbamate complexes) was confirmed by X-ray photoelectron spectroscopy and cyclic voltammetry techniques in neutral conditions. As a proof of concept, this nanocomposite was used as a transducer in Back-gated Field Effect Transistor (GFET) based nanobiosensors. The fabrication of GFET devices, at the level of 2-inch wafer, was conducted by conventional photolithography. The CS2, rGO/Pt and protein G that detects IgG, were locally deposited by using a commercial microplotter instrument. The experiments demonstrated that the homogenous decoration with Platinum nanoparticles as surface could permit the detection of biomolecules by using non-uniform graphene flakes functionalized with CS2, for rapid elaboration of electrochemical and electrical-nanobiosensors.
AB - Multilayered reduced graphene oxide decorated homogenously with Platinum nanoparticles (rGO/Pt) was confirmed by Transmission Electron Microscopy and X-ray diffraction. It was found that the rGO/Pt flakes were suitable for adsorbing biomolecules in one step with the use of carbon disulfide (CS2) based compound. In this context, the adsorption-interaction of CS2 and Human Serum Albumin biomolecules on rGO/Pt (forming Platinum dithiocarbamate complexes) was confirmed by X-ray photoelectron spectroscopy and cyclic voltammetry techniques in neutral conditions. As a proof of concept, this nanocomposite was used as a transducer in Back-gated Field Effect Transistor (GFET) based nanobiosensors. The fabrication of GFET devices, at the level of 2-inch wafer, was conducted by conventional photolithography. The CS2, rGO/Pt and protein G that detects IgG, were locally deposited by using a commercial microplotter instrument. The experiments demonstrated that the homogenous decoration with Platinum nanoparticles as surface could permit the detection of biomolecules by using non-uniform graphene flakes functionalized with CS2, for rapid elaboration of electrochemical and electrical-nanobiosensors.
KW - Back-gated Field Effect Transistor (GFET)
KW - Carbon disulfide (CS)
KW - Decorated reduced graphene oxide flakes
KW - Nanobiosensors
KW - Platinum dithiocarbamate complexes
KW - Pt nanoparticles
KW - Voltammetry
UR - http://www.scopus.com/inward/record.url?scp=85048709475&partnerID=8YFLogxK
U2 - 10.1016/j.tsf.2018.05.032
DO - 10.1016/j.tsf.2018.05.032
M3 - Artículo
AN - SCOPUS:85048709475
SN - 0040-6090
VL - 658
SP - 54
EP - 60
JO - Thin Solid Films
JF - Thin Solid Films
ER -