Gold nanoparticle-attached ITO as a biocompatible matrix for myoglobin immobilization: direct electrochemistry and catalysis to hydrogen peroxide

Zhang, Jingdong; Oyama, Munetaka

doi:10.1016/j.jelechem.2004.12.005

Cited by 103 publications

(63 citation statements)

References 40 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…131,132 The synthesis of gold nanoparticles was based on a surfactantassisted seeding growth that was actually intended to prepare gold nanorods in solution. This synthesis provided both a short amount of rod-shaped gold nanoparticles and a large amount of spherical nanoparticles.…”

Section: Redox Protein Biosensors Designed With Aunpsmentioning

confidence: 99%

Biosensors based on gold nanostructures

Vidotti¹,

Carvalhal²,

Ferreira³

et al. 2011

J. Braz. Chem. Soc.

131

View full text Add to dashboard Cite

O presente trabalho de revisão aborda os mais recentes avanços na tecnologia de biossensores alcançados através da montagem de biomoléculas associada com nanopartículas de ouro na construção de dispositivos analíticos. Esta revisão está dividida de acordo com a biomolécula empregada no desenvolvimento de biossensores: (i) compostos imunológicos; (ii) DNA/RNA funcionais; e (iii) enzimas e proteínas Heme. A fim de facilitar a compreensão, cada seção foi subdividida de acordo com o modo de transdução. Os imunossensores contendo nanopartículas de ouro têm uma ampla gama de aplicações nos campos alimentício, ambiental, farmacêutico, químico e de diagnósticos clínicos. As nanopartículas foram empregadas para melhorar o sinal analítico ou a imobilização dos imunocompostos. Em outra seção, os biossensores DNA/ RNA empregando nanoestruturas de ouro como labels e biossensores label-free associados a nanoestruturas de ouro como transdutores foram sistematicamente relatados para a rápida identificação de patógenos, espécies de interesse ambiental e diagnóstico clínico. A inclusão de nanopartículas de ouro em eletrodos modificados aumenta a transferência de elétrons entre o transdutor e a biomolécula proporcionando um melhor desempenho quando enzimas e proteínas redox heme são usados. Biossensores para a detecção e quantificação de glicose e peróxido de hidrogênio foram também discutidos.The present review discusses the latest advances in biosensor technology achieved by the assembly of biomolecules associated with gold nanoparticles in analytical devices. This review is divided in sections according to the biomolecule employed in the biosensor development: (i) immunocompounds; (ii) DNA/RNA and functional DNA/RNA; and (iii) enzymes and Heme proteins. In order to facilitate the comprehension each section was subdivided according to the transduction mode. Gold nanoparticles based immunosensors have a wide range of applications in food, environmental, pharmaceutical, chemistry and clinical diagnostics. The nanoparticles were employed to improve whether the analytical signal or the immunocompounds immobilization. In another section, biosensors based on DNA/RNA biomolecules employing gold nanostructures as labels and label-free funtional DNA/RNA biosensors associated to gold nanostructures as tranducers were systematically reported for rapid identification of pathogens, species of environmental interest and clinical diagnostics, respectively. The inclusion of gold nanoparticles in modified electrodes itself enhances the electron transfer between the transducer and biomolecules leading to improved bioanalytical devices when redox enzymes and heme proteins are used. Biosensors for the detection and quantification of glucose and hydrogen peroxide are discussed as well.

show abstract

Section: Redox Protein Biosensors Designed With Aunpsmentioning

confidence: 99%

Biosensors based on gold nanostructures

Vidotti¹,

Carvalhal²,

Ferreira³

et al. 2011

J. Braz. Chem. Soc.

131

View full text Add to dashboard Cite

show abstract

“…Gold nanoparticles were grown onto ITO coated glass mainly though seed-mediated growth 21,24,25 or assembling with polymer. [26][27][28] Hitherto electrochemical deposition has never been used to fabricate gold nanoparticles on ITO film coated glass.…”

Section: Simm Et Almentioning

confidence: 99%

Direct Electrodeposition of Gold Nanoparticles onto Indium Tin Oxide Film Coated Glass: Application to the Detection of Arsenic(III)

2006

View full text Add to dashboard Cite

“…The electrode modification is based on a seedmediated growth approach, 22 which has been demonstrated as a new electrode modification method without using peculiar binder molecules. 23 Such a gold nanoparticle modified ITO electrode has provided useful applications in electroanalysis, such as fabricating protein-based biosensors 24,25 and sensitively determining guanosine 26 and epinephrine. 27 In the present work, we demonstrate that the seed-mediated growth of gold nanoparticles on glassy carbon (GC) surface is actually feasible.…”

mentioning

confidence: 99%