An electrochemical immunosensor for prostate specific antigen using nitrogen-doped graphene as a sensing platform

2019 ◽  
Vol 11 (16) ◽  
pp. 2183-2189 ◽  
Author(s):  
Wenwen Meng ◽  
Wenjuan Zhang ◽  
JunJun Zhang ◽  
Xi Chen ◽  
Yuzhong Zhang
Keyword(s):  
Gold Nanoparticles ◽  
Prostate Specific Antigen ◽  
Specific Antigen ◽  
Electrochemical Immunosensor ◽  
Au Nps ◽  
Nitrogen Doped ◽  
Sensing Platform ◽  
Nitrogen Doped Graphene ◽  
Doped Graphene

In this study, a sensitive electrochemical immunosensor for prostate specific antigen (PSA) detection is described using nitrogen-doped graphene (NG) and gold nanoparticles (Au NPs) as a sensing interface.

Aptamer-gold nanoparticles-signal probe bioconjugates amplify electrochemical signal for the detection of prostate specific antigen

2021 ◽  
Author(s):  
Mengrao Li ◽  
Wenjuan Zhang ◽  
Yuzhong Zhang
Keyword(s):  
Gold Nanoparticles ◽  
Prostate Specific Antigen ◽  
Specific Antigen ◽  
Cancer Biomarkers ◽  
Electrochemical Immunosensor ◽  
Au Nps ◽  
Electrochemical Signal ◽  
Signal Probe ◽  
Design Protocol

In this work, we reported a simple and sensitive electrochemical immunosensor for cancer biomarkers PSA detection. In design protocol, gold nanoparticles (Au NPs) were used a carrier to load aptamer...

scholarly journals SERS Sensing Properties of New Graphene/Gold Nanocomposite

Nanomaterials ◽  
2019 ◽  
Vol 9 (9) ◽  
pp. 1236 ◽  
Author(s):  
Giulia Neri ◽  
Enza Fazio ◽  
Placido Giuseppe Mineo ◽  
Angela Scala ◽  
Anna Piperno
Keyword(s):  
Rhodamine 6G ◽  
Surface Enhanced Raman Spectroscopy ◽  
Molecular Probes ◽  
Au Nps ◽  
Nitrogen Doped ◽  
Surface Enhanced ◽  
Surface Enhanced Raman ◽  
Nitrogen Doped Graphene ◽  
Doped Graphene ◽  
Sers Sensing

The development of graphene (G) substrates without damage on the sp2 network allows to tune the interactions with plasmonic noble metal surfaces to finally enhance surface enhanced Raman spectroscopy (SERS) effect. Here, we describe a new graphene/gold nanocomposite obtained by loading gold nanoparticles (Au NPs), produced by pulsed laser ablation in liquids (PLAL), on a new nitrogen-doped graphene platform (G-NH2). The graphene platform was synthesized by direct delamination and chemical functionalization of graphite flakes with 4-methyl-2-p-nitrophenyl oxazolone, followed by reduction of p-nitrophenyl groups. Finally, the G-NH2/Au SERS platform was prepared by using the conventional aerography spraying technique. SERS properties of G-NH2/Au were tested using Rhodamine 6G (Rh6G) and Dopamine (DA) as molecular probes. Raman features of Rh6G and DA are still detectable for concentration values down to 1 × 10−5 M and 1 × 10−6 M respectively.

Nitrogen-doped graphene–polyvinylpyrrolidone/gold nanoparticles modified electrode as a novel hydrazine sensor

2016 ◽  
Vol 227 ◽  
pp. 524-532 ◽  
Author(s):  
Chayada Saengsookwaow ◽  
Ratthapol Rangkupan ◽  
Orawon Chailapakul ◽  
Nadnudda Rodthongkum
Keyword(s):  
Gold Nanoparticles ◽  
Modified Electrode ◽  
Nitrogen Doped ◽  
Nitrogen Doped Graphene ◽  
Doped Graphene ◽  
Hydrazine Sensor
Sign in / Sign up

Export Citation Format

Share Document