Fabrication of chemiluminescence sensor based on conducting polymer@SiO2/Nafion composite film.
Tris(2,2'-bipyridyl)ruthenium (II) (Ru(bpy)2+) electrogerated chemiluminescence (ECL) sensor was fabricated by immobilization of Ru(bpy)2+ complex on conducting polymer@SiO2/Nafion composite film on surface of glassy carbon electrode. The conducting polymer@SiO2 nanocomposites were prepared by coating polyaniline (PANI), polypyrrole (PPy), and polythiophene (PTh) on the surface of the SiO2 sphere. The conducting polymer@SiO2 nanocomposite was characterized by scanning electron microscopy (SEM), Transmission electron microscopy (TEM), and atomic force microscopy (AFM). The sensitivity and reproducibility of the prepared ECL sensor to tripropylamine (TPA) was evaluated. As a result, the PPy@SiO2 composite electrode exhibited high sensitivity and good reproducibility compared to that obtained with PANI@SiO2 and PTh@SiO2 composite electrodes because of the strong interaction between PPy@SiO2 and Ru(bpy)2+ complex.
Department of Chemistry, BK 21 NanoBiosensor Research Team, Hannam University, Daejeon 305-811, Republic of Korea.
Da-Jung
DJ
Jung
Ming-Hua
MH
Piao
Sang-Hyub
SH
Oh
Jin-Chun
JC
Woo
Seong-Ho
SH
Choi
D015082:2,2'-Dipyridyl / Q000031:analogs & derivatives / Q000737:chemistry; D055664:Electrochemical Techniques; D005465:Fluorocarbon Polymers / Q000737:chemistry*; D008163:Luminescent Measurements / Q000379:methods*; D008855:Microscopy, Electron, Scanning; D046529:Microscopy, Electron, Transmission; D053761:Nanocomposites / Q000737:chemistry* / Q000648:ultrastructure; D036103:Nanotechnology; D009942:Organometallic Compounds / Q000737:chemistry; D011108:Polymers / Q000737:chemistry; D011437:Propylamines / Q000032:analysis; D011758:Pyrroles / Q000737:chemistry; D015203:Reproducibility of Results; D012680:Sensitivity and Specificity; D012822:Silicon Dioxide / Q000737:chemistry*
D005465:Fluorocarbon Polymers; D009942:Organometallic Compounds; D011108:Polymers; D011437:Propylamines; D011758:Pyrroles; C103599:bis(bipyridyl)ruthenium(II); C096226:tripropylamine; C067635:polypyrrole; C040402:perfluorosulfonic acid; D015082:2,2'-Dipyridyl; D012822:Silicon Dioxide