Surface modification of indium tin oxide films with Au ions implantation: Characterization and application in bioelectrochemistry

Liu, Chenyao; Chen, Qunxia; Jiao, Jiao; Li, Shuoqi; Hu, Jingbo; Li, Qilong

doi:10.1016/j.surfcoat.2011.01.002

Cited by 13 publications

(5 citation statements)

References 44 publications

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“…Furthermore, ion-catalyzed oxidation of the main polymer chain can lead to an increase in biodegradability [7]- [9]. In the literature, Au has been reported to not only display effective catalytic activity toward the electrochemical behavior of small biomolecules and proteins but also offer a favorable microenvironment for the orientation of several atomic species and greatly facilitate electron transfer [10]. On the other hand, C implantation can generate diamondlike carbon surface properties [11].…”

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confidence: 99%

Oxidation Behavior of C- and Au-Ion-Implanted Biodegradable Polymers

Sokullu

Oztarhan

Tıhmınlıoğlu

et al. 2012

IEEE Trans. Plasma Sci.

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Abstract-Biodegradable polymers are widely used in biomedical and tissue engineering applications due to their biocompatibility and hydrolysis properties in the body. However, their low surface energy and lack of functional groups to interact with the cellular environment have limited their applications for in vivo studies. Ion beam modification is a convenient method for improving the surface properties of polymeric materials for functional biomedical applications. In the work described here, vacuum arc metal ion implantation was used to modify the composition of the near-surface region of three kinds of polymers-poly(L-lactide), poly(D, L-lactide-co-glycolide), and poly(L-lactide/caprolactone)-chosen as representative of biodegradable polymers. X-ray photoelectron spectroscopy analysis was used to characterize the chemical effects of these polymers after implantation with C and with Au, and the results were compared with untreated control samples. We find that oxidation behavior is brought about for certain implantation fluences, resulting in improved surface hydrophilicity.Index Terms-Biodegradable polymers, ion implantation, surface characterization, X-ray photoelectron spectroscopy (XPS).

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confidence: 99%

Oxidation Behavior of C- and Au-Ion-Implanted Biodegradable Polymers

Sokullu

Oztarhan

Tıhmınlıoğlu

et al. 2012

IEEE Trans. Plasma Sci.

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“…37 The application of the ITO electrode has acceptability based on its userfriendly characteristics, which are its unique optical transparency, wide electrochemical working window, high electrical conductivity, excellent substrate adhesion, stable electrochemical and physical properties, conveniently etched, patterned, microarrayed, and its low cost. 38,39 The use of ITO for sensing applications can be prominently enhanced by introducing nanoparticles on its surface. 40 Metal nanoparticles provide a biocompatible microenvironment for biomolecules and signicantly increase the surface-to-volume ratio of an immobilized biomolecule on the electrode surface, 41,42 both of which ultimately inuence electrical signal enhancement.…”

Section: Introductionmentioning

confidence: 99%

A robust electrochemical immunosensor based on core–shell nanostructured silica-coated silver for cancer (carcinoembryonic-antigen-CEA) diagnosis

et al. 2021

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“…The morphology and the structure of AuNPs were characterized by SEM that the diameters were between 5 nm and 15 nm, while the average radius is 10 nm in our previous works [37,38]. In order to further study electrochemical application of this new electrode material, we chose cytochrome c as redox protein to fabricate the modified electrode.…”

Section: Introductionmentioning

confidence: 99%

ITO electrode modified by a gold ion implantation technique for direct electrocatalytic sensing of hydrogen peroxide

et al. 2012

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We report on a simple strategy for the fabrication of gold nanoparticles (AuNPs) on an indium tin oxide substrate using a modified ion implantation method. The morphology, structure and electrochemical features of AuNPs were characterized by atomic force microscopy, electrochemical impedance spectroscopy and cyclic voltammetry. The modified electrode has a large electrochemically active surface and enables strong loading with cytochrome c (Cyt c) proteins. It undergoes enhanced electron transfer at uncompromised electrochemical activity, and also displays good stability and repeatability. The immobilized Cyt c exhibits good electrocatalytic activity towards hydrogen peroxide (H 2 O 2 ), with a linear relationship between the catalytic current during differential pulse voltammetry and the concentration of H 2 O 2 in the 0.05 μM to 0.2 μM range. The detection limit (S/N 0 3) is 0.01 μM.

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Surface modification of indium tin oxide films with Au ions implantation: Characterization and application in bioelectrochemistry

Cited by 13 publications

References 44 publications

Oxidation Behavior of C- and Au-Ion-Implanted Biodegradable Polymers

Oxidation Behavior of C- and Au-Ion-Implanted Biodegradable Polymers

A robust electrochemical immunosensor based on core–shell nanostructured silica-coated silver for cancer (carcinoembryonic-antigen-CEA) diagnosis

ITO electrode modified by a gold ion implantation technique for direct electrocatalytic sensing of hydrogen peroxide

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