Glucose biosensor based on self-assembled gold nanoparticles and double-layer 2d-network (3-mercaptopropyl)-trimethoxysilane polymer onto gold substrate

Due to the incorporation of gold nanoparticles (AuNPs), the reported AuNP-based FRET nanoflares still have some problems, such as non-negligible cytotoxicity and time-consuming preparation procudure. In this communication, a novel...

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Potentiometric determination of nanomolar concentration of Cu (II) using a carbon paste electrode modified by a self-assembled mercapto compound on gold nanoparticles

Sensors and Actuators B Chemical ◽

10.1016/j.snb.2012.04.086 ◽

2012 ◽

Vol 169 ◽

pp. 305-311 ◽

Cited By ~ 24

Author(s):

Mohammad Hossein Mashhadizadeh ◽

Soleyman Ramezani ◽

Sattar Ebrahimi

Keyword(s):

Gold Nanoparticles ◽

Carbon Paste Electrode ◽

Potentiometric Determination ◽

Carbon Paste ◽

Nanomolar Concentration ◽

Self Assembled ◽

Paste Electrode

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Solvent and double-layer effects on redox reactions in self-assembled monolayers of ferrocenyl—alkanethiolates on gold

Journal of Electroanalytical Chemistry ◽

10.1016/s0022-0728(96)04785-7 ◽

1997 ◽

Vol 420 (1-2) ◽

pp. 291-299 ◽

Cited By ~ 68

Author(s):

Stephen E. Creager ◽

Gary K. Rowe

Keyword(s):

Double Layer ◽

Redox Reactions ◽

Self Assembled Monolayers ◽

Assembled Monolayers ◽

Self Assembled

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Electrodeposition–Assisted Assembled Multilayer Films of Gold Nanoparticles and Glucose Oxidase onto Polypyrrole-Reduced Graphene Oxide Matrix and Their Electrocatalytic Activity toward Glucose

Nanomaterials ◽

10.3390/nano8120993 ◽

2018 ◽

Vol 8 (12) ◽

pp. 993 ◽

Cited By ~ 3

Author(s):

Baoyan Wu ◽

Shihua Hou ◽

Yongyong Xue ◽

Zhan Chen

Keyword(s):

Gold Nanoparticles ◽

Graphene Oxide ◽

Glucose Oxidase ◽

Reduced Graphene Oxide ◽

Self Assembly ◽

Electrocatalytic Activity ◽

Multilayer Films ◽

Glucose Biosensor ◽

Future Design ◽

Reduced Graphene

The study reports a facile and eco-friendly approach for nanomaterial synthesis and enzyme immobilization. A corresponding glucose biosensor was fabricated by immobilizing the gold nanoparticles (AuNPs) and glucose oxidase (GOD) multilayer films onto the polypyrrole (PPy)/reduced graphene oxide (RGO) modified glassy carbon electrode (GCE) via the electrodeposition and self-assembly. PPy and graphene oxide were first coated on the surface of a bare GCE by the electrodeposition. Then, AuNPs and GOD were alternately immobilized onto PPy-RGO/GCE electrode using the electrodeposition of AuNPs and self-assembly of GOD to obtain AuNPs-GOD multilayer films. The resulting PPy-RGO-(AuNPs-GOD)n/GCE biosensors were used to characterize and assess their electrocatalytic activity toward glucose using cyclic voltammetry and amperometry. The response current increased with the increased number of AuNPs-GOD layers, and the biosensor based on four layers of AuNPs-GOD showed the best performance. The PPy-RGO-(AuNPs-GOD)4/GCE electrode can detect glucose in a linear range from 0.2 mM to 8 mM with a good sensitivity of 0.89 μA/mM, and a detection limit of 5.6 μM (S/N = 3). This study presents a promising eco-friendly biosensor platform with advantages of electrodeposition and self-assembly, and would be helpful for the future design of more complex electrochemical detection systems.

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