An ultrasensitive electrochemical immunosensor based on C60-modified polyamidoamine dendrimers and Au NPs for co-catalytic silver deposition

2018 ◽  
Vol 42 (6) ◽  
pp. 4653-4660 ◽  
Author(s):  
Peipei Chen ◽  
Ting Wang ◽  
Xiangli Zheng ◽  
Dong Tian ◽  
Fangquan Xia ◽  
...  
Keyword(s):  
Electrochemical Immunosensor ◽  
Silver Deposition ◽  
Au Nps ◽  
Polyamidoamine Dendrimers ◽  
Electrochemical Immunosensing

C60-Modified polyamidoamine dendrimers and Au NPs for the co-catalytic deposition of silver, used for ultrasensitive electrochemical immunosensing.

An electrochemical immunosensing system on patterned electrodes for immunoglobulin E detection

2019 ◽  
Vol 11 (35) ◽  
pp. 4410-4415 ◽  
Author(s):  
Seung Jun Oh ◽  
Jun Ki Ahn ◽  
Hun Park ◽  
Yesol Song ◽  
Seong Jung Kwon ◽  
...  
Keyword(s):  
Biological Samples ◽  
Immunoglobulin E ◽  
Electrochemical Immunosensor ◽  
Electrochemical Biosensing ◽  
Patterned Electrodes ◽  
Optical Assay ◽  
Electrochemical Immunosensing

We present an electrochemical biosensing platform which enables immunoglobulin E (IgE) detection from eight independent biological samples. The performance of the electrochemical immunosensor was comparable to the conventional optical assay.

A label-free small molecular hydrogel-based electrochemical immunosensor for ultrasensitive detection of deoxynivalenol

2019 ◽  
Vol 11 (47) ◽  
pp. 5948-5952 ◽  
Author(s):  
Yu Peng ◽  
Lifang Geng ◽  
Xinyi Liu ◽  
Min Liu ◽  
Haoru Wu ◽  
...  
Keyword(s):  
Electrochemical Immunosensor ◽  
Ultrasensitive Detection ◽  
Label Free ◽  
Electrochemical Immunosensing

A guanosine-based small-molecular hydrogel is developed as a label-free electrochemical immunosensing platform for ultrasensitive detection of deoxynivalenol.

scholarly journals Structural Characterization of Emeraldine-Salt Polyaniline/Gold Nanoparticles Complexes

2011 ◽  
Vol 2011 ◽  
pp. 1-7 ◽  
Author(s):  
E. A. Sanches ◽  
J. C. Soares ◽  
R. M. Iost ◽  
V. S. Marangoni ◽  
G. Trovati ◽  
...  
Keyword(s):  
Gold Nanoparticles ◽  
Electrostatic Interactions ◽  
Sodium Citrate ◽  
X Ray Diffraction ◽  
Emeraldine Salt ◽  
Salt Form ◽  
Au Nps ◽  
Fourier Transformed Infrared Spectroscopy ◽  
Polyamidoamine Dendrimers

Gold nanoparticles (Au NPs) stabilized with polyamidoamine dendrimers (Au-PAMAM) or sodium citrate (Au-CITRATE) were synthesized and complexed with polyaniline emeraldine-salt form (ES-PANI). The complexes were characterized using structural and morphological techniques, including X-Ray Diffraction (XRD), Scanning Electron Microscopy (SEM), Zeta Potential analyses, and Fourier-Transformed Infrared spectroscopy (FTIR). When the Au-CITRATE NPs are added to the polymeric solution, the formation of a precipitate is clearly observed. The precipitate exhibited a different morphology from that found for ES-PANI and Au-CITRATE NPs, suggesting the formation of ES-PANI coating over the surface of Au-CITRATE NPs. On the other hand, when the Au-PAMAM NPs are incorporated into the ES-PANI solution, none interaction was observed, probably due to the repulsive electrostatic interactions, being the organization of the ES-PANI chains unaffected by the presence of the Au-PAMAM NPs.

Tropomyosin Analysis in Foods Using an Electrochemical Immunosensing Approach

2021 ◽  
Vol 5 (1) ◽  
pp. 62
Author(s):  
Ricarda Torre ◽  
Maria Freitas ◽  
Estefanía Costa-Rama ◽  
Henri P. A. Nouws ◽  
Cristina Delerue-Matos
Keyword(s):  
Limit Of Detection ◽  
Polyclonal Antibodies ◽  
Analytical Signal ◽  
Food Samples ◽  
Electrochemical Immunosensor ◽  
Screen Printed Carbon Electrode ◽  
Sandwich Type ◽  
Assay Time ◽  
Electrochemical Immunosensing

A screen-printed carbon electrode was used as the transducer for the development of an electrochemical immunosensor for the determination of tropomyosin (a major shrimp allergen) in food samples. Monoclonal and polyclonal antibodies were used in a sandwich-type immunoassay. The analytical signal was electrochemically obtained using an alkaline phosphatase-labelled secondary antibody and a 3-indoxyl phosphate/silver nitrate substrate. The total assay time was 2 h 50 min and allowed the quantification of tropomyosin between 2.5 and 20 ng mL−1, with a limit of detection of 1.7 ng mL−1 The immunosensor was successfully applied to the analysis of commercial food products.

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.

scholarly journals A new Bi2MoO6 nano-tremella-based electrochemical immunosensor for the sensitive detection of a carcinoembryonic antigen

RSC Advances ◽  
2020 ◽  
Vol 10 (27) ◽  
pp. 15870-15880 ◽  
Author(s):  
Zhongmin Wang ◽  
Xinli Tian ◽  
Dong Sun ◽  
Penghui Cao ◽  
Mengkui Ding ◽  
...  
Keyword(s):  
Gold Nanoparticles ◽  
Carcinoembryonic Antigen ◽  
Electrochemical Immunosensor ◽  
Sensitive Detection ◽  
Electrochemical Immunosensing

Novel Bi2MoO6 nanohybrids with a tremella-like structure modified with gold nanoparticles were used to fabricate an electrochemical immunosensing platform of CEA.

Sign in / Sign up

Export Citation Format

Share Document