KFU. Card publication. Effect of size and protein environment on electrochemical properties of gold nanoparticles on carbon electrodes

KAZAN
FEDERAL UNIVERSITY

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EFFECT OF SIZE AND PROTEIN ENVIRONMENT ON ELECTROCHEMICAL PROPERTIES OF GOLD NANOPARTICLES ON CARBON ELECTRODES

Form of presentation

Articles in international journals and collections

Year of publication

2009

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Authors, employees of KFU

Bulatov Emil Rafaelevich, author

Bibliographic description in the original language

Timur I. Abdullin, Oksana V. Bondar, Irina I. Nikitina, Emil R. Bulatov, Michail V. Morozov, Albert Kh. Hilmutdinov, Myakzyum Kh. Salakhov, Mustafa Çulha. Effect of size and protein environment on electrochemical properties of gold nanoparticles on carbon electrodes. Bioelectrochemistry, 2009, 77 (1), 37-42.

Annotation

We studied the electrochemical properties of gold nanoparticles (GNPs) and their complexes with proteins using square-wave voltammetry. Effect of the nanoparticle size and detection procedure was explored upon the oxidation of GNPs on a glassy carbon electrode (GCE). For pre-characterized GNPs of 13, 35 and 78 nm diameter, the oxidation peak potential was + 0.98, + 1.03 and + 1.06 V vs. Ag/AgCl, respectively. The conjugation of GNPs with four different proteins was verified by UV-Vis spectroscopy and atomic force microscopy indicated the formation of protein shells around GNPs. This process hampered the oxidation of GNPs on bare GCE causing pronounced decrease in the current response by an average factor of 72. GCE modification with carbon nanotubes weakly influenced the sensitivity of GNP detection but resulted in a 14.5-fold signal increase averaged for all GNP-protein complexes. The acidic dissolution and electrodeposition of GNPs or their complexes adsorbed on GCE allowed superior

Keywords

Atomic force microscopy, Carbon nanotube, Gold nanoparticles, Proteins, Square-wave voltammetry

The name of the journal

BIOELECTROCHEMISTRY

URL

http://dx.doi.org/10.1016/j.bioelechem.2009.06.002

Please use this ID to quote from or refer to the card

https://repository.kpfu.ru/eng/?p_id=104029&p_lang=2

Resource files

File name	Size (MB)	Format
2009_Bioelectrochemistry.pdf	0,58	pdf	show / download

Full metadata record

Field DC	Value	Language
dc.contributor.author	Bulatov Emil Rafaelevich	ru_RU
dc.date.accessioned	2009-01-01T00:00:00Z	ru_RU
dc.date.available	2009-01-01T00:00:00Z	ru_RU
dc.date.issued	2009	ru_RU
dc.identifier.citation	Timur I. Abdullin, Oksana V. Bondar, Irina I. Nikitina, Emil R. Bulatov, Michail V. Morozov, Albert Kh. Hilmutdinov, Myakzyum Kh. Salakhov, Mustafa Çulha. Effect of size and protein environment on electrochemical properties of gold nanoparticles on carbon electrodes. Bioelectrochemistry, 2009, 77 (1), 37-42.	ru_RU
dc.identifier.uri	https://repository.kpfu.ru/eng/?p_id=104029&p_lang=2	ru_RU
dc.description.abstract	BIOELECTROCHEMISTRY	ru_RU
dc.description.abstract	We studied the electrochemical properties of gold nanoparticles (GNPs) and their complexes with proteins using square-wave voltammetry. Effect of the nanoparticle size and detection procedure was explored upon the oxidation of GNPs on a glassy carbon electrode (GCE). For pre-characterized GNPs of 13, 35 and 78 nm diameter, the oxidation peak potential was + 0.98, + 1.03 and + 1.06 V vs. Ag/AgCl, respectively. The conjugation of GNPs with four different proteins was verified by UV-Vis spectroscopy and atomic force microscopy indicated the formation of protein shells around GNPs. This process hampered the oxidation of GNPs on bare GCE causing pronounced decrease in the current response by an average factor of 72. GCE modification with carbon nanotubes weakly influenced the sensitivity of GNP detection but resulted in a 14.5-fold signal increase averaged for all GNP-protein complexes. The acidic dissolution and electrodeposition of GNPs or their complexes adsorbed on GCE allowed superior	ru_RU
dc.language.iso	ru	ru_RU
dc.subject	Atomic force microscopy	ru_RU
dc.subject	Carbon nanotube	ru_RU
dc.subject	Gold nanoparticles	ru_RU
dc.subject	Proteins	ru_RU
dc.subject	Square-wave voltammetry	ru_RU
dc.title	Effect of size and protein environment on electrochemical properties of gold nanoparticles on carbon electrodes	ru_RU
dc.type	Articles in international journals and collections	ru_RU