Highly sensitive and selective detection of trinitrotoluene using cysteine-capped gold nanoparticles

2016 ◽  
Vol 8 (22) ◽  
pp. 4398-4405 ◽  
Author(s):  
S. Devi ◽  
B. Singh ◽  
A. K. Paul ◽  
S. Tyagi
Keyword(s):  
Gold Nanoparticles ◽  
Gold Nanoparticle ◽  
Cross Linking ◽  
Selective Detection ◽  
Schematic Representation ◽  
Highly Sensitive

(A) A schematic representation of the formation of cysteine capped gold nanoparticles and their interaction at pH 5 and 9.3. (B) A schematic representation of the formation of a Meisenheimer complex between cysteine modified gold nanoparticles and TNT, and possible cross-linking between gold nanoparticles bound to the Meisenheimer complex with gold nanoparticle bound cysteine.

A highly sensitive gold nanoparticle bioprobe based electrochemical immunosensor using screen printed graphene biochip

RSC Advances ◽  
2014 ◽  
Vol 4 (102) ◽  
pp. 58460-58466 ◽  
Author(s):  
Syazana Abdullah Lim ◽  
Hiroyuki Yoshikawa ◽  
Eiichi Tamiya ◽  
Hartini Mohd Yasin ◽  
Minhaz Uddin Ahmed
Keyword(s):  
Gold Nanoparticles ◽  
Gold Nanoparticle ◽  
Chorionic Gonadotropin ◽  
Human Chorionic Gonadotropin ◽  
Electrode Material ◽  
Electrochemical Immunosensor ◽  
Highly Sensitive ◽  
Electrochemical Label ◽  
Screen Printed

This study describes a highly sensitive electrochemical immunosensor for the detection of human chorionic gonadotropin (hCG) that uses gold nanoparticles (AuNP) as the electrochemical label and graphene as electrode material.

Gold nanoparticle-based fluorescent “turn-on” sensing system for the selective detection of mercury ions in aqueous solution

RSC Advances ◽  
2015 ◽  
Vol 5 (115) ◽  
pp. 95268-95272 ◽  
Author(s):  
Sohee Choi ◽  
Youngmi Kim
Keyword(s):  
Aqueous Solution ◽  
Gold Nanoparticles ◽  
Gold Nanoparticle ◽  
Sensitive Detection ◽  
Selective Detection ◽  
Mercury Ions ◽  
Buffer Solution ◽  
Aqueous Buffer ◽  
Turn On ◽  
Sensing System

A simple and straightforward fluorometric assay using dye-adsorbed gold nanoparticles (AuNPs) was used in the highly selective and sensitive detection of mercury ions in aqueous buffer solution.

Highly sensitive and rapid visual detection of ricin using unmodified gold nanoparticle probes

RSC Advances ◽  
2014 ◽  
Vol 4 (83) ◽  
pp. 43998-44003 ◽  
Author(s):  
Jingting Hu ◽  
Haichao Dai ◽  
Yujing Sun ◽  
Pengjuan Ni ◽  
Yilin Wang ◽  
...  
Keyword(s):  
Gold Nanoparticles ◽  
Gold Nanoparticle ◽  
Visual Detection ◽  
Nanoparticle Probes ◽  
Highly Sensitive

A sensitive aptamer-based colorimetric biosensor for the detection of ricin using unmodified gold nanoparticles as probe was developed.

Direct imaging of single gold nanoparticle etching: sensitive detection of lead ions

2014 ◽  
Vol 6 (13) ◽  
pp. 4507-4511 ◽  
Author(s):  
Dinggui Dai ◽  
Dong Xu ◽  
Xiaodong Cheng ◽  
Yan He
Keyword(s):  
Gold Nanoparticles ◽  
Real Time ◽  
Gold Nanoparticle ◽  
Detection Method ◽  
Size Reduction ◽  
Direct Imaging ◽  
Real Time Imaging ◽  
Highly Sensitive ◽  
Darkfield Microscopy

We present a highly sensitive Pb2+ detection method by in situ real-time imaging of Pb2+ catalyzed etching and size reduction of immobilized single gold nanoparticles with darkfield microscopy.

scholarly journals New sensing platform of poly(ester-urethane)urea doped with gold nanoparticles for rapid detection of mercury ions in fish tissue

RSC Advances ◽  
2021 ◽  
Vol 11 (50) ◽  
pp. 31845-31854
Author(s):  
Hany Abd El-Raheem ◽  
Rabeay Y. A. Hassan ◽  
Rehab Khaled ◽  
Ahmed Farghali ◽  
Ibrahim M. El-Sherbiny
Keyword(s):  
Gold Nanoparticles ◽  
Electrochemical Sensor ◽  
Rapid Detection ◽  
Fish Tissue ◽  
Selective Detection ◽  
Mercury Ions ◽  
Sensing Platform ◽  
Highly Sensitive

A new electrochemical sensor based on poly(ester-urethane) urea doped with gold nanoparticles (PUU/AuNPs) for highly sensitive and selective detection of mercury(ii) ions in fish tissue.

Highly sensitive electrochemical sensor for dopamine with a double-stranded deoxyribonucleic acid/gold nanoparticle/graphene modified electrode

2015 ◽  
Vol 7 (5) ◽  
pp. 1878-1883 ◽  
Author(s):  
Wencheng Wang ◽  
Yong Cheng ◽  
Lijun Yan ◽  
Huanhuan Zhu ◽  
Guangjiu Li ◽  
...  
Keyword(s):  
Gold Nanoparticles ◽  
Ionic Liquid ◽  
Electrochemical Sensor ◽  
Gold Nanoparticle ◽  
Modified Electrode ◽  
Deoxyribonucleic Acid ◽  
Carbon Ionic Liquid Electrode ◽  
Liquid Electrode ◽  
Highly Sensitive

A highly sensitive electrochemical sensor for the detection of dopamine was realized with a double-stranded deoxyribonucleic acid/gold nanoparticles/graphene modified carbon ionic liquid electrode.

Recent Advances of Plasmonic Gold Nanoparticles in Optical Sensing and Therapy

2020 ◽  
Vol 25 (46) ◽  
pp. 4861-4876 ◽  
Author(s):  
He Zhou ◽  
Hongwei Yang ◽  
Guangke Wang ◽  
Aijun Gao ◽  
Zhiqin Yuan
Keyword(s):  
Gold Nanoparticles ◽  
Optical Properties ◽  
Surface Plasmon Resonance ◽  
Gold Nanoparticle ◽  
Surface Plasmon ◽  
Plasmon Resonance ◽  
Selective Detection ◽  
Future Trends ◽  
Therapeutic System ◽  
Special Surface

: Gold nanoparticles with special surface plasmon resonance have been widely used in sensing and therapy because of their easy preparation, unique optical properties, excellent biocompatibility, etc. The applications of gold nanoparticles in chemo/biosensing, imaging, and therapy reported in 2016-2019, are summarized in this review. Regarding the gold nanoparticle-based sensing or imaging, sensing mechanisms and strategies are provided to illustrate the concepts for designing sensitive and selective detection platforms. Gold nanoparticlemediated therapy is introduced by surface plasmon resonance-based therapy and delivery-based therapy. Beyond the sole therapeutic system, platforms through synergistic therapy are also discussed. In the end, discussion of the challenges and future trends of gold nanoparticle-based sensing and therapy systems is described.

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