TY - JOUR
T1 - Highly sensitive electrogenerated chemiluminescence produced at Ru (bpy)32 + in Eastman-AQ55D-carbon nanotube composite film electrode
AU - Zhang, Lihua
AU - Guo, Zhihui
AU - Xu, Zhiai
AU - Dong, Shaojun
PY - 2006/7/1
Y1 - 2006/7/1
N2 - The electrochemistry and electrogenerated chemiluminescence (ECL) of tris(2,2′-bipyridyl)ruthenium(II) ion-exchanged in Eastman-AQ-carbon nanotube (CNT) composite films were investigated at a glassy carbon (GC) electrode. Eastman-AQ55D is a poly (ester sulfonic acid) cation exchanger available in a commercial dissolved form. It is much more hydrophilic than Nafion due to its unique structure, so Ru (bpy)32 + does not diffuse into the hydrophobic region where it may lose its electroactivity as that in Nafion. The interfused CNT could act as electronic wires that connect the electrode with Ru (bpy)32 +, which made the composite film much more electronically conductive. Besides, the negatively charged CNT could also absorb some Ru (bpy)32 + which finally led to the increasing of Ru (bpy)32 +. Moreover, the strong electrostatic interaction between AQ and Ru (bpy)32 + made the composite films much more stable. The combination of AQ and CNT brings excellent sensitivity with the detection limit as low as 3 × 10-11 M for TPA.
AB - The electrochemistry and electrogenerated chemiluminescence (ECL) of tris(2,2′-bipyridyl)ruthenium(II) ion-exchanged in Eastman-AQ-carbon nanotube (CNT) composite films were investigated at a glassy carbon (GC) electrode. Eastman-AQ55D is a poly (ester sulfonic acid) cation exchanger available in a commercial dissolved form. It is much more hydrophilic than Nafion due to its unique structure, so Ru (bpy)32 + does not diffuse into the hydrophobic region where it may lose its electroactivity as that in Nafion. The interfused CNT could act as electronic wires that connect the electrode with Ru (bpy)32 +, which made the composite film much more electronically conductive. Besides, the negatively charged CNT could also absorb some Ru (bpy)32 + which finally led to the increasing of Ru (bpy)32 +. Moreover, the strong electrostatic interaction between AQ and Ru (bpy)32 + made the composite films much more stable. The combination of AQ and CNT brings excellent sensitivity with the detection limit as low as 3 × 10-11 M for TPA.
KW - Eastman-AQ-carbon nanotube composite film
KW - Electrogenerated chemiluminescence
KW - Tris(2,2′-bipyridyl)ruthenium(II)
UR - https://www.scopus.com/pages/publications/33745210353
U2 - 10.1016/j.jelechem.2006.04.003
DO - 10.1016/j.jelechem.2006.04.003
M3 - 文章
AN - SCOPUS:33745210353
SN - 1572-6657
VL - 592
SP - 63
EP - 67
JO - Journal of Electroanalytical Chemistry
JF - Journal of Electroanalytical Chemistry
IS - 1
ER -