КФУ. Карточка публикации. Effect of size and protein environment on electrochemical properties of gold nanoparticles on carbon electrodes

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

Форма представления

Статьи в зарубежных журналах и сборниках

Год публикации

2009

Язык

английский

Авторы, сотрудники КФУ

Булатов Эмиль Рафаэлевич, автор

Библиографическое описание на языке оригинала

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.

Аннотация

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

Ключевые слова

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

Название журнала

BIOELECTROCHEMISTRY

URL

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

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https://repository.kpfu.ru/?p_id=104029

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Полная запись метаданных

Поле DC	Значение	Язык
dc.contributor.author	Булатов Эмиль Рафаэлевич	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/?p_id=104029	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	Статьи в зарубежных журналах и сборниках	ru_RU