Application of tris(2-2´-bipyridyl)ruthenium(II)-Nafion-ormosil-modified electrode in selective sensing of dopamine

Author

Chauhan, Dheeraj S. ; Pandey, Prem C.

Author_Institution

Dept. of Appl. Chem., Banaras Hindu Univ., Varanasi, India

fYear

2009

fDate

25-28 Oct. 2009

Firstpage

1135

Lastpage

1139

Abstract

We report herein a novel Ruthenium bipyridyl-Nafion-ormosil composite material cast onto an ITO electrode and used for electrochemiluminescent (ECL) detection of dopamine. The modified electrodes are made using the homogeneous solution of [Ru(bpy)₃]²⁺, Nafion^Â® 117 and 3-glycidoxypropyltrimethoxysilane. The encapsulated [Ru(bpy)₃]²⁺ showed catalyzed ECL response as compared to that of plain [Ru(bpy)₃]²⁺-Nafion matrix. The new composite material (Rusystem) was further modulated by the introduction of gold nanoparticles within composite matrix. Quantitative relation between catalytic efficiency of [Ru(bpy)₃]²⁺ and ECL yield has been recorded. The lowest detection limit of dopamine analysis was found to be < 0.1 Â¿M.

Keywords

biochemistry; biomedical electrodes; biosensors; chemiluminescence; electrochemical sensors; electroluminescence; organic compounds; 3-glycidoxypropyltrimethoxysilane; ITO electrode; [Ru(bpy)₃]²⁺; catalytic efficiency; electrochemiluminescent detection; gold nanoparticles; ruthenium bipyridyl-Nafion-ormosil composite material; selective dopamine sensing; solutions; Biosensors; Chemistry; Composite materials; Electrodes; Electrokinetics; Indium tin oxide; Nanocomposites; Neurotransmitters; Organic inorganic hybrid materials; Sensor arrays;

fLanguage

English

Publisher

ieee

Conference_Titel

Sensors, 2009 IEEE

Conference_Location

Christchurch

ISSN

1930-0395

Print_ISBN

978-1-4244-4548-6

Electronic_ISBN

1930-0395

Type

conf

DOI

10.1109/ICSENS.2009.5398577

Filename

5398577