A colorimetric Boolean INHIBIT logic gate for the determination of sulfide based on citrate-capped gold nanoparticles

RSC Advances ◽  
2015 ◽  
Vol 5 (72) ◽  
pp. 58574-58579 ◽  
Author(s):  
Hao-Hua Deng ◽  
Gang-Wei Wu ◽  
Xiao-Qing Lin ◽  
Xiong-Wei Xu ◽  
Ai-Lin Liu ◽  
...  
Keyword(s):  
Gold Nanoparticles ◽  
Logic Gate

An INHIBIT logic gate is designed based on citrate-capped gold nanoparticles and successfully utilized to the determination of sulfide.

scholarly journals A Label-Free Fluorescent DNA Calculator Based on Gold Nanoparticles for Sensitive Detection of ATP

Molecules ◽  
2018 ◽  
Vol 23 (10) ◽  
pp. 2494 ◽  
Author(s):  
Jingjing Zhang ◽  
Shizhi Zhang ◽  
Chaoqun Niu ◽  
Chen Liu ◽  
Jie Du ◽  
...  
Keyword(s):  
Gold Nanoparticles ◽  
Deoxyribonucleic Acid ◽  
Logic Gate ◽  
Sensitive Detection ◽  
Label Free ◽  
Detection Range ◽  
Highly Sensitive ◽  
Time Logic ◽  
Fluorescence Dye

Herein we described a deoxyribonucleic acid (DNA) calculator for sensitive detection of the determination of adenosine triphosphate (ATP) using gold nanoparticles (GNP) and PicoGreen fluorescence dye as signal transducer, and ATP and single-stranded DNA (DNA-M′) as activators. The calculator-related performances including linearity, reaction time, logic gate, and selectivity were investigated, respectively. The results revealed that this oligonucleotide sensor was highly sensitive and selective. The detection range was 50–500 nmol/L (R2 = 0.99391) and the detection limit was 46.5 nmol/L. The AND DNA calculator was successfully used for the ATP detection in human urine. Compared with other methods, this DNA calculator has the characteristics of being label-free, non-enzymic, simple, and highly sensitive.

Determination of Amoxicillin Based on the Plasmon Resonance of Gold Nanoparticles

2012 ◽  
Vol 29 (11) ◽  
pp. 1329
Author(s):  
Fei LENG ◽  
Ying LI ◽  
Shunjun ZHEN ◽  
Yuanfang LI
Keyword(s):  
Gold Nanoparticles ◽  
Plasmon Resonance

Indirect Determination of Amikacin by Gold Nanoparticles as Redox Probe

2020 ◽  
Vol 17 ◽  
Author(s):  
Mansureh Alizadeh ◽  
Mandana Amiri ◽  
Abolfazl Bezaatpour
Keyword(s):  
Gold Nanoparticles ◽  
Bacterial Infections ◽  
Limit Of Detection ◽  
Pharmaceutical Preparation ◽  
Cathodic Peak ◽  
Easy Method ◽  
Peak Current ◽  
Indirect Determination ◽  
Tract Infections

: Amikacin is an aminoglycoside antibiotic used for many gram-negative bacterial infections like infections in the urinary tract, infections in brain, lungs and abdomen. Electrochemical determination of amikacin is a challenge in electroanalysis because it shows no voltammetric peak at the surface of bare electrodes. In this approach, a very simple and easy method for indirect voltammetric determination of amikacin presented in real samples. Gold nanoparticles were electrodeposited at the surface of glassy carbon electrode in constant potential. The effect of several parameters such as time and potential of deposition, pH and scan rates on signal were studied. The cathodic peak current of Au3+ decreased with increasing amikacin concentration. Quantitative analysis of amikacin was performed using differential pulse voltammetry by following cathodic peak current of gold ions. Two dynamic linear ranges of 1.0 × 10−8–1.0 × 10-7 M and 5.0 × 10−7–1.0 × 10-3 M were obtained and limit of detection was estimated 3.0× 10−9 M. The method was successfully determined amikacin in pharmaceutical preparation and human serum. The effect of several interference in determination of amikacin was also studied.

Electrochemical aptasensor based on Mo2C/Mo2N and gold nanoparticles for determination of chlorpyrifos

2021 ◽  
Vol 188 (5) ◽  
Author(s):  
Zhenfeng Lin ◽  
Xin Liu ◽  
Yangzi Li ◽  
Changxiang Li ◽  
Liu Yang ◽  
...  
Keyword(s):  
Gold Nanoparticles ◽  
Electrochemical Aptasensor

Gold Nanoparticles Modified Titania Nanotube Arrays for Amperometric Determination of Ascorbic Acid

2010 ◽  
Vol 43 (18) ◽  
pp. 2809-2822 ◽  
Author(s):  
T. G. Satheesh Babu ◽  
P. V. Suneesh ◽  
T. Ramachandran ◽  
Bipin Nair
Keyword(s):  
Gold Nanoparticles ◽  
Ascorbic Acid ◽  
Nanotube Arrays ◽  
Amperometric Determination ◽  
Titania Nanotube Arrays ◽  
Titania Nanotube

Electrochemical determination of arsenic in natural waters using carbon fiber ultra-microelectrodes modified with gold nanoparticles

Talanta ◽  
2017 ◽  
Vol 166 ◽  
pp. 198-206 ◽  
Author(s):  
Patricio Carrera ◽  
Patricio J. Espinoza-Montero ◽  
Lenys Fernández ◽  
Hugo Romero ◽  
José Alvarado
Keyword(s):  
Gold Nanoparticles ◽  
Carbon Fiber ◽  
Natural Waters ◽  
Electrochemical Determination

Carbon Paste Gold Nanoparticles Sensor for the Selective Determination of Dopamine in Buffered Solutions

2010 ◽  
Vol 157 (9) ◽  
pp. F116 ◽  
Author(s):  
Nada F. Atta ◽  
Ahmed Galal ◽  
Fekria M. Abu-Attia ◽  
Shereen M. Azab
Keyword(s):  
Gold Nanoparticles ◽  
Carbon Paste ◽  
Selective Determination
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