A solid-state sensor based on ruthenium (II) complex immobilized on polytyramine film for the simultaneous determination of dopamine, ascorbic acid and uric acid

Research output: Contribution to journalArticle

15 Citations (Scopus)

Abstract

A solid-state sensor based on a polytyramine (Pty) film deposited on a glassy carbon electrode doped with a tris(2,2′-bipyridyl)Ru(II) complex (Ru/Pty/GCE) was constructed electrochemically. The surface morphology of the film modified electrode was characterized using electrochemical and surface scanning techniques. A redox property represented by a [Ru(bpy) 3]3 +/2 + couple immobilized at the Pty moiety was characterized using typical voltammetric techniques. A distinct Ru 3d peak obtained at 280.9 eV confirms doping of the Ru species onto the Pty moiety characterized by X-ray photoelectron (XPS). Atomic force microscopy (AFM) images demonstrate that incorporation of Ru decreases the surface roughness of the native Pty film modified electrode. The Ru/Pty/GCE exhibits efficient electrochemical sensing toward the oxidation of dopamine (DA), ascorbic acid (AA) and uric acid (UA) in their mixture. Three well-defined peaks were resolved with a large peak to peak separation and the detection limits of AA, DA and UA are brought down to 0.31, 0.08 and 0.58 μM, respectively. Interference studies and application for DA determination in real samples were conducted with satisfactory results.

Original languageEnglish
Pages (from-to)390-396
Number of pages7
JournalThin Solid Films
Volume564
DOIs
Publication statusPublished - Aug 1 2014

Fingerprint

Solid-state sensors
uric acid
dopamine
Ruthenium
ascorbic acid
Ascorbic acid
Uric Acid
ruthenium
Ascorbic Acid
Dopamine
solid state
Electrodes
acids
Acids
sensors
electrodes
2,2'-Dipyridyl
Glassy carbon
Photoelectrons
Surface morphology

Keywords

  • Ascorbic acid
  • Dopamine
  • Polytyramine
  • Sensors
  • Tris(bipyridyl)ruthenium (II)

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Materials Chemistry
  • Metals and Alloys
  • Surfaces, Coatings and Films
  • Surfaces and Interfaces

Cite this

@article{82684d784cf44fac9509db7e701af72b,
title = "A solid-state sensor based on ruthenium (II) complex immobilized on polytyramine film for the simultaneous determination of dopamine, ascorbic acid and uric acid",
abstract = "A solid-state sensor based on a polytyramine (Pty) film deposited on a glassy carbon electrode doped with a tris(2,2′-bipyridyl)Ru(II) complex (Ru/Pty/GCE) was constructed electrochemically. The surface morphology of the film modified electrode was characterized using electrochemical and surface scanning techniques. A redox property represented by a [Ru(bpy) 3]3 +/2 + couple immobilized at the Pty moiety was characterized using typical voltammetric techniques. A distinct Ru 3d peak obtained at 280.9 eV confirms doping of the Ru species onto the Pty moiety characterized by X-ray photoelectron (XPS). Atomic force microscopy (AFM) images demonstrate that incorporation of Ru decreases the surface roughness of the native Pty film modified electrode. The Ru/Pty/GCE exhibits efficient electrochemical sensing toward the oxidation of dopamine (DA), ascorbic acid (AA) and uric acid (UA) in their mixture. Three well-defined peaks were resolved with a large peak to peak separation and the detection limits of AA, DA and UA are brought down to 0.31, 0.08 and 0.58 μM, respectively. Interference studies and application for DA determination in real samples were conducted with satisfactory results.",
keywords = "Ascorbic acid, Dopamine, Polytyramine, Sensors, Tris(bipyridyl)ruthenium (II)",
author = "Khudaish, {Emad A.} and Al-Ajmi, {Khawla Y.} and Al-Harthi, {Salim H.}",
year = "2014",
month = "8",
day = "1",
doi = "10.1016/j.tsf.2014.05.056",
language = "English",
volume = "564",
pages = "390--396",
journal = "Thin Solid Films",
issn = "0040-6090",
publisher = "Elsevier",

}

TY - JOUR

T1 - A solid-state sensor based on ruthenium (II) complex immobilized on polytyramine film for the simultaneous determination of dopamine, ascorbic acid and uric acid

AU - Khudaish, Emad A.

AU - Al-Ajmi, Khawla Y.

AU - Al-Harthi, Salim H.

PY - 2014/8/1

Y1 - 2014/8/1

N2 - A solid-state sensor based on a polytyramine (Pty) film deposited on a glassy carbon electrode doped with a tris(2,2′-bipyridyl)Ru(II) complex (Ru/Pty/GCE) was constructed electrochemically. The surface morphology of the film modified electrode was characterized using electrochemical and surface scanning techniques. A redox property represented by a [Ru(bpy) 3]3 +/2 + couple immobilized at the Pty moiety was characterized using typical voltammetric techniques. A distinct Ru 3d peak obtained at 280.9 eV confirms doping of the Ru species onto the Pty moiety characterized by X-ray photoelectron (XPS). Atomic force microscopy (AFM) images demonstrate that incorporation of Ru decreases the surface roughness of the native Pty film modified electrode. The Ru/Pty/GCE exhibits efficient electrochemical sensing toward the oxidation of dopamine (DA), ascorbic acid (AA) and uric acid (UA) in their mixture. Three well-defined peaks were resolved with a large peak to peak separation and the detection limits of AA, DA and UA are brought down to 0.31, 0.08 and 0.58 μM, respectively. Interference studies and application for DA determination in real samples were conducted with satisfactory results.

AB - A solid-state sensor based on a polytyramine (Pty) film deposited on a glassy carbon electrode doped with a tris(2,2′-bipyridyl)Ru(II) complex (Ru/Pty/GCE) was constructed electrochemically. The surface morphology of the film modified electrode was characterized using electrochemical and surface scanning techniques. A redox property represented by a [Ru(bpy) 3]3 +/2 + couple immobilized at the Pty moiety was characterized using typical voltammetric techniques. A distinct Ru 3d peak obtained at 280.9 eV confirms doping of the Ru species onto the Pty moiety characterized by X-ray photoelectron (XPS). Atomic force microscopy (AFM) images demonstrate that incorporation of Ru decreases the surface roughness of the native Pty film modified electrode. The Ru/Pty/GCE exhibits efficient electrochemical sensing toward the oxidation of dopamine (DA), ascorbic acid (AA) and uric acid (UA) in their mixture. Three well-defined peaks were resolved with a large peak to peak separation and the detection limits of AA, DA and UA are brought down to 0.31, 0.08 and 0.58 μM, respectively. Interference studies and application for DA determination in real samples were conducted with satisfactory results.

KW - Ascorbic acid

KW - Dopamine

KW - Polytyramine

KW - Sensors

KW - Tris(bipyridyl)ruthenium (II)

UR - http://www.scopus.com/inward/record.url?scp=84904068244&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84904068244&partnerID=8YFLogxK

U2 - 10.1016/j.tsf.2014.05.056

DO - 10.1016/j.tsf.2014.05.056

M3 - Article

AN - SCOPUS:84904068244

VL - 564

SP - 390

EP - 396

JO - Thin Solid Films

JF - Thin Solid Films

SN - 0040-6090

ER -