Highly stable and sensitive glucose biosensor based on covalently assembled high density Au nanostructures

Si, Peng; Kannan, Palanisamy; Guo, Longhua; Son, Hungsun; Kim, Dong Hwan

doi:10.1016/j.bios.2011.02.044

Cited by 74 publications

(28 citation statements)

References 49 publications

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“…This phenomenon is termed as localized surface plasmon resonance [4,5]. Among the various noble metal NPs, Au NPs have a wide range of applications such as catalysis, molecular detection, and medicine because of their excellent chemical stability [6][7][8].…”

Section: Introductionmentioning

confidence: 99%

Shaped femtosecond laser induced photoreduction for highly controllable Au nanoparticles based on localized field enhancement and their SERS applications

Jiang

et al. 2020

Nanophotonics

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Gold nanoparticles (Au NPs) have a wide range of applications because of their localized surface plasmon resonance properties. Femtosecond laser is considered to be an effective method for preparing Au NPs because of its characteristics of ultrashort irradiation periods and ultrahigh intensities. In this study, a novel method is proposed to produce an Au NP-attached substrate using the spatially and temporally shaped femtosecond laser. Laser-induced periodic surface structures (LIPSS) are designed to obtain the localized optical field enhancement, which leads to the femtosecond laser spatially reshaping, enabling the deposition of Au NPs by photoreduction on silicon substrates. The Au NPs prepared by this method exhibit morphological controllability and chemical stability, especially excellent spatial selectivity and uniformity, resulting in the tunable and stable surface-enhanced Raman scattering (SERS) applications. Also, the temporally shaped femtosecond pulses are introduced to further increase the enhancement factors of the SERS. This method successfully achieves the controllable morphology synthesis and selective deposition of Au NPs on the substrate simultaneously, which provides a promising candidate for SERS substrates fabrication, and holds potential applications in optoelectronics, such as molecular detection and biosensors.

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Section: Introductionmentioning

confidence: 99%

Shaped femtosecond laser induced photoreduction for highly controllable Au nanoparticles based on localized field enhancement and their SERS applications

Jiang

et al. 2020

Nanophotonics

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“…Third, GOD was self-assembled on PPy-RGO-AuNPs/GCE surface mainly via the interaction between AuNPs and GOD to obtain the PPy-RGO-(AuNPs-GOD) 1 /GCE electrode. It has been reported that AuNPs can bind strongly to the biomolecule surface through covalent bonds with the functional groups such as –NH 2 , SH, and –CN, and it can provide a suitable microenvironment for biomolecules, such as enzyme and nucleic acids [11,36]. Finally, different layers of AuNPs-GOD multilayer films were built up on the PPy-RGO/GCE surface by repeating the process of electrodeposition of AuNPs and self-assembly of GOD to obtain PPy-RGO-(AuNPs-GOD) n /GCE electrode.…”

Section: Resultsmentioning

confidence: 99%

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

Hou

Xue

et al. 2018

Nanomaterials

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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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“…Its sensitivity was 63.8 mA M -1 cm -2 , which was much higher than that of glucose biosensor based on ZrO2/chitosan/GOx (22.3 mA M -1 cm -2 ), 27 Graphene/AuNPs/ GOx/Chitosan (17.5 mA M -1 cm -2 ), 28 and GOx/(AuNPs/ MWCNT) 5 (19.3 mA M -1 cm -2 ). 29 This analytical performance of the proposed CNS/SA/GOx electrode was also compared with those reported in the literature for the GOx-based biosensors using other matrixes ( Table 1). The high sensitivity and low detection limit of the CNS/SA/GOx sensor may be attributed to the combined merits of CNS and SA, such as good biocompatible and hydrophilic microenvironments, high film-forming ability and adsorption ability.…”

Section: Amperometric Biosensor Detection Of Glucosementioning

confidence: 85%

Development of Highly Sensitive Amperometric Biosensor for Glucose Using Carbon Nanosphere/Sodium Alginate Composite Matrix for Enzyme Immobilization

Han

Cai

et al. 2014

ANAL. SCI.

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In this study, we developed a highly sensitive amperometric biosensor for glucose detection based on glucose oxidase immobilized in a novel carbon nanosphere (CNS)/sodium alginate (SA) composite matrix. This hybrid material combined the advantages of CNS and natural biopolymer SA. This composite film was characterized by scanning electron microscope, electrochemical impedance spectroscopy and UV-vis, which indicated that the hybrid material was suitable for immobilization of glucose oxidase. Various experimental conditions were investigated that influenced the performance of the biosensor, such as pH, applied potential and temperature. Under the optimum conditions, the biosensor showed excellent performance for glucose over a wide linear concentration range from 1.0 × 10 -6 to 4.6 × 10 -3 M with a detection limit of 0.5 μM based on a signal-to-noise ratio of 3. Furthermore, the biosensor exhibited excellent long-term stability and satisfactory reproducibility.

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Highly stable and sensitive glucose biosensor based on covalently assembled high density Au nanostructures

Cited by 74 publications

References 49 publications

Shaped femtosecond laser induced photoreduction for highly controllable Au nanoparticles based on localized field enhancement and their SERS applications

Shaped femtosecond laser induced photoreduction for highly controllable Au nanoparticles based on localized field enhancement and their SERS applications

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

Development of Highly Sensitive Amperometric Biosensor for Glucose Using Carbon Nanosphere/Sodium Alginate Composite Matrix for Enzyme Immobilization

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