Fluorescence biosensor for Salmonella typhimurium detection in food based on nano-self-assembly of alendronic acid modified upconversion and gold nanoparticles

2021 ◽  
Author(s):  
Min Chen ◽  
Leiqing Pan ◽  
K. Tu
Keyword(s):  
Gold Nanoparticles ◽  
Salmonella Typhimurium ◽  
Gold Nanoparticle ◽  
Alendronic Acid ◽  
Self Assembly ◽  
Upconversion Nanoparticles ◽  
Fluorescent Biosensor ◽  
Fluorescence Biosensor

A simple and quick responsive fluorescent biosensor for Salmonella typhimurium detection based on the recognition of aptamer coupled with alendronic acid (ADA)@upconversion nanoparticles (UCNPs) and gold nanoparticle (AuNPs) has been...

Layer-by-layer self-assembly of polydopamine/gold nanoparticle/thiol coating as the stationary phase for open tubular capillary electrochromatography

2015 ◽  
Vol 7 (19) ◽  
pp. 8227-8234 ◽  
Author(s):  
Xiu-Ju Li ◽  
Qi-Feng Fu ◽  
Qi-Hui Zhang ◽  
Xue-Mei Jiang ◽  
Feng-Qing Yang ◽  
...  
Keyword(s):  
Gold Nanoparticles ◽  
Stationary Phase ◽  
Gold Nanoparticle ◽  
Self Assembly ◽  
Capillary Electrochromatography ◽  
Phase Ratio ◽  
Layer By Layer ◽  
Novel Method ◽  
First Time ◽  
High Phase

A novel method for the preparation of permanent coating columns with a high phase ratio based on the multiple properties of PDA and LBL self-assembly of polydopamine/gold nanoparticles/thiols has been developed for the first time.

One-pot synthesis of sub-3 nm gold nanoparticle networks connected by thio-based multidentate fullerene adducts

2015 ◽  
Vol 51 (31) ◽  
pp. 6730-6733 ◽  
Author(s):  
Guillaume Rousseau ◽  
Christophe Lavenn ◽  
Luis Cardenas ◽  
Stéphane Loridant ◽  
Yanhui Wang ◽  
...  
Keyword(s):  
Gold Nanoparticles ◽  
Gold Nanoparticle ◽  
Self Assembly ◽  
One Pot ◽  
One Pot Synthesis

Self-assembly of homogeneous ultra-small gold nanoparticles thanks to the design of a new hexaadduct fullerene bearing 12 thiocyanate functions.

Enzyme-triggered self-assembly of gold nanoparticles for enhanced retention effects and photothermal therapy of prostate cancer

2018 ◽  
Vol 54 (70) ◽  
pp. 9841-9844 ◽  
Author(s):  
Shuyan Yang ◽  
Defan Yao ◽  
Yanshu Wang ◽  
Weitao Yang ◽  
Bingbo Zhang ◽  
...  
Keyword(s):  
Prostate Cancer ◽  
Gold Nanoparticles ◽  
Targeted Therapy ◽  
Gold Nanoparticle ◽  
Self Assembly ◽  
Photothermal Therapy

A peptide-modified gold nanoparticle was developed for tumour-targeted therapy.

Effect of block copolymer architecture and composition on gold nanoparticle fabrication

2019 ◽  
Vol 10 (34) ◽  
pp. 4637-4642 ◽  
Author(s):  
Anna P. Constantinou ◽  
Uriel Marie-Sainte ◽  
Lihui Peng ◽  
Dean R. Carroll ◽  
Catriona M. McGilvery ◽  
...  
Keyword(s):  
Gold Nanoparticles ◽  
Block Copolymer ◽  
Block Copolymers ◽  
Gold Nanoparticle ◽  
Self Assembly ◽  
The Self ◽  
Nanoparticle Fabrication

Gold nanoparticles (AuNPs) fabricated via the self-assembly of block copolymers of various architectures.

Reusable Electrochemical Biosensor for Sensitive Detection of Single Nucleotide Polymorphisms Based on Gold Nanoparticle Self-Assembly

2014 ◽  
Vol 651-653 ◽  
pp. 293-296
Author(s):  
Song Bai Zhang ◽  
Chun Jiao Tang ◽  
Liao Yong Luo ◽  
Na Liu ◽  
Qin Li Sun ◽  
...  
Keyword(s):  
Gold Nanoparticles ◽  
Single Nucleotide Polymorphisms ◽  
Gold Nanoparticle ◽  
Self Assembly ◽  
Gold Electrode ◽  
Sensitive Detection ◽  
Capture Probe ◽  
Nucleotide Polymorphisms ◽  
Single Nucleotide ◽  
Target Dna

A reusable electrochemical biosensing strategy based on gold nanoparticle involved layer-by-layer self-assembly for sensitive detection of single nucleotide polymorphisms is proposed in this study. Making use of the strong sulfur-Au affinity, ethanthiol and capture probe modified gold nanoparticles are self-assembled onto the surface of gold electrode successively. The target DNA hybridizes with the capture probe and ferrocene labeled signaling probe successively via sandwich hybridization reaction. By measuring ac current voltammetry, the target DNA can be sensitively detected in a linear dynamic range from 4.1-410 nM with a low detection limit of 2 nM. Making use of self-assembled gold nanoparticles layer, a large amount of capture probes can be modified onto the gold electrode, supporting the high sensitivity of the proposed strategy. In addition, good reproducibility, high selectivity and stability are achieved. In particular, the biosensor can be easily regenerated by melting in hot water, making it reusable.

Electrochemical Aptasensor for Label-Free Detection of Protein Based on Gold Nanoparticle Involved Self-Assembly

2013 ◽  
Vol 310 ◽  
pp. 177-182
Author(s):  
Song Bai Zhang ◽  
Bing Jun Zhang ◽  
Qian Liu ◽  
Xia Hu ◽  
Li Ying Zheng ◽  
...  
Keyword(s):  
Gold Nanoparticles ◽  
Gold Nanoparticle ◽  
Self Assembly ◽  
Gold Electrode ◽  
Hot Water ◽  
Target Protein ◽  
Capture Probe ◽  
Label Free ◽  
Label Free Detection ◽  
Self Assembled

A label-free electrochemical biosensing strategy based on gold nanoparticle involved layer-by-layer self assembly for the detection of protein is proposed using platelet derived growth factor-BB dimer (PDGF-BB) as the model analyte. Utilizing the strong sulfur-Au affinity, ethanthiol and capture probe modified gold nanoparticles are self-assembled onto the surface of gold electrode successively. The aptamer probe for target protein hybridizes with the capture probe and the biosensor is fabricated. By measuring ac current voltammetry, the target protein can be sensitively detected in a linear dynamic range from 1-1000 ng/mL with a low detection limit of 0.5 ng/mL. Making use of self-assembled gold nanoparticles layer, a large amount of capture probes can be modified onto the gold electrode, supporting the high sensitivity of the proposed strategy. In addition, good reproducibility, high selectivity and stability are achieved. In particular, the biosensor can be easily regenerated by melting in hot water, making it reusable.

scholarly journals Polymer-assisted self-assembly of gold nanoparticle monolayers and their dynamical switching

Nanoscale ◽  
2016 ◽  
Vol 8 (35) ◽  
pp. 15864-15869 ◽  
Author(s):  
Tao Ding ◽  
Adam W. Rudrum ◽  
Lars O. Herrmann ◽  
Vladimir Turek ◽  
Jeremy J. Baumberg
Keyword(s):  
Gold Nanoparticles ◽  
Gold Nanoparticle ◽  
Self Assembly ◽  
Dynamic Switching ◽  
Isopropyl Acrylamide

Dynamic switching of plasmonic monolayers built of gold nanoparticles (AuNPs) is achieved using nano-coatings of poly(isopropyl acrylamide) (PNIPAM).

Plasmonic isomers via DNA-based self-assembly of gold nanoparticles

Nanoscale ◽  
2018 ◽  
Vol 10 (41) ◽  
pp. 19557-19567 ◽  
Author(s):  
Laurent Lermusiaux ◽  
Alison M. Funston
Keyword(s):  
Gold Nanoparticles ◽  
Gold Nanoparticle ◽  
Self Assembly ◽  
Three Dimensional ◽  
Kinetic Control

Kinetic control of DNA-based assembly enables the facile production of discrete three-dimensional tetrameric gold nanoparticle isomers.

DNA templated self-assembly of gold nanoparticle clusters in the colorimetric detection of plant viral DNA using a gold nanoparticle conjugated bifunctional oligonucleotide probe

RSC Advances ◽  
2016 ◽  
Vol 6 (14) ◽  
pp. 11773-11785 ◽  
Author(s):  
G. Dharanivasan ◽  
S. U. Mohammed Riyaz ◽  
D. Michael Immanuel Jesse ◽  
T. Raja Muthuramalingam ◽  
G. Rajendran ◽  
...  
Keyword(s):  
Gold Nanoparticles ◽  
Gold Nanoparticle ◽  
Self Assembly ◽  
Oligonucleotide Probe ◽  
Colorimetric Detection ◽  
Viral Dna ◽  
Nanoparticle Clusters

The DNA templated self-assembly of gold nanoparticles clustered in different configurations (nn = 2–∞) was investigated in the colorimetric detection of ToLCNDV DNA using a gold nanoparticle conjugated bifunctional oligonucleotide probe.

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