Short-time preparation and electrochemical properties of a single layer of tetraoctylammonium bromide capped Au nanoparticles on dithiol self-assembled monolayer-modified Au electrode

A novel technique to covalently immobilize indicator dyes with terminal amino groups for preparing optical sensors is investigated. Au nanoparticles are used as bridges and carriers for anchoring indicator dyes on the surface of a quartz glass slide. 1-Aminopyrene (AP) was employed as an example of indicator dyes and covalently immobilized onto the outmost surface of the glass slide. First, the glass slide was functionalized by (3-mercaptopropyl) trimethoxysilane (MPS) to form a thiol-terminated self-assembled monolayer, where Au nanoparticles were strongly anchored via covalent link. Then, 16-mercaptohexadecanoic acid (MHDA) was self-assembled to bring carboxylic groups onto the surfaces of Au nanoparticles. A further activation by using 1-(3-dimethylaminopropyl)-3-ethylcarbodiimide hydrochloride (EDC) and N-hydroxysuccinimide (NHS) converted the carboxylic group into succinimide ester. Finally, the active succinimide ester was reacted with 1-aminopyrene (AP). Thus, AP was covalently immobilized to the glass slide and an AP-immobilized sensor was obtained. The resulting sensor was used to determine rutin based on fluorescence quenching. It showed a linear response toward rutin (R) from 5.0 × 10-7 to 6.0 × 10-4 mol L-1 with a detection limit of 2.0× 10-7 mol L-1. This AP-immobilized sensor has very satisfactory reproducibility, reversibility, rapid response and no dye-leaching.

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Preparation of Self-Assembled Monolayer of Dinuclear Iron Complex on Au Electrode and Its Reaction with Molecular Dioxygen

Transactions of the Materials Research Society of Japan ◽

10.14723/tmrsj.32.575 ◽

2007 ◽

Vol 32 (2) ◽

pp. 575-578

Author(s):

Yuya Hayashi ◽

Tomohiko Inomata ◽

Kazuma Shinozaki ◽

Yasuhiro Funahashi ◽

Tomohiro Ozawa ◽

...

Keyword(s):

Iron Complex ◽

Self Assembled Monolayer ◽

Au Electrode ◽

Dinuclear Iron ◽

Self Assembled

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Binding of Sulfate-Terminated Surfactants with Different Alkyl Chain Lengths to Viologen Sites Covalently Embedded in the Interior of a Self-Assembled Monolayer on a Au Electrode

Langmuir ◽

10.1021/acs.langmuir.1c02376 ◽

2022 ◽

Author(s):

Takamasa Sagara ◽

Youichi Hagi ◽

Masaki Toyohara

Keyword(s):

Alkyl Chain ◽

Self Assembled Monolayer ◽

Au Electrode ◽

Self Assembled ◽

Chain Lengths

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Fabrication of Self-assembled Monolayer/AgCl Mixed Surface and It^|^apos;s Electrochemical Properties

IEEJ Transactions on Sensors and Micromachines ◽

10.1541/ieejsmas.134.315 ◽

2014 ◽

Vol 134 (10) ◽

pp. 315-319

Author(s):

Miyuki Tabata ◽

Kozue Nogami ◽

Tatsuro Goda ◽

Akira Matsumoto ◽

Yuji Miyahara

Keyword(s):

Electrochemical Properties ◽

Self Assembled Monolayer ◽

Self Assembled

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Fullerene modification of gold electrodes and gold nanoparticles based on application of aromatic thioacetate-functionalized C60

RSC Advances ◽

10.1039/c4ra12139b ◽

2014 ◽

Vol 4 (109) ◽

pp. 64310-64318 ◽

Cited By ~ 9

Author(s):

Piotr Piotrowski ◽

Joanna Pawłowska ◽

Jan Pawłowski ◽

Lidia Jagoda Opuchlik ◽

Renata Bilewicz ◽

...

Keyword(s):

Gold Nanoparticles ◽

Au Nanoparticles ◽

Gold Electrodes ◽

Au Electrode ◽

Self Assembled

Two types of nanocomposites were synthesized: Au electrode covered with self-assembled in situ deprotected aromatic S-acetyl-derivatized C60 fullerenes and Au nanoparticles decorated with high number of C60 fullerenes.

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Self-assembled monolayer of 2-pyridinethiol@Pt-Au nanoparticles, a new electrocatalyst for reducing of CO2 to methanol

Journal of Electroanalytical Chemistry ◽

10.1016/j.jelechem.2017.09.046 ◽

2017 ◽

Vol 804 ◽

pp. 29-35 ◽

Cited By ~ 8

Author(s):

Ali A. Ensafi ◽

Hossein A. Alinajafi ◽

M. Jafari-Asl ◽

B. Rezaei

Keyword(s):

Au Nanoparticles ◽

Self Assembled Monolayer ◽

Self Assembled

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DNA Electrochemical Biosensor Based on Au Nanoparticles Self-Assembled Au Electrode

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.298.78 ◽

2011 ◽

Vol 298 ◽

pp. 78-83

Author(s):

Yan Liu ◽

Zhao Dai ◽

Shi Chao Xu ◽

Ji Mei Zhang ◽

Guo Zheng ◽

...

Keyword(s):

Au Nanoparticles ◽

Detection System ◽

Dna Biosensor ◽

Disulfonic Acid ◽

Complementary Dna ◽

Au Electrode ◽

Biosensor System ◽

Modified Dna ◽

Electrochemical Signal ◽

Self Assembled

A novel electrochemical DNA biosensor system based on Au nanoparticles (AuNPs) modified Au electrode and anthraquinone-2,6-disulfonic acid (AQDS) as hybridization indicator was presented in this paper. AuNPs with different particle sizes were prepared from gold chloride by reduction, and self-assembled on Au electrode (AuNPs/Au electrode) by cysteamine as linker. Then, 5’ end –SH modified DNA (HS-DNA) as nucleotide probes were self-assembled onto the surface of AuNPs modified Au electrode (HS-DNA/AuNPs/Au electrode), and the HS-DNA/AuNPs/Au electrode could detect target DNA (completely complementary with HS-DNA). Because AuNPs were on Au electrode, the surface of Au electrode was increased. Therefore, this would result in the increase of electrochemical signal and increase the sensitivity of biosensor. If a completely complementary single stranded DNA (ssDNA) as target existed in the detection system, the cathodic peak current (△Ip) of AuNPs modified Au electrode was increased about 3 times than the HS-DNA/AuNPs/Au electrode because of the hybridization between HS-DNA and complementary DNA target and the formation of double stranded DNA (dsDNA), and if the target was a mismatching base-pair with HS-DNA, the electrochemical signal of electrode would have no obviously change. These results showed that this DNA biosensor system based on AuNPs self-assembled Au electrode had an excellent sensitivity with a complete complementary DNA sequence.

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