Electrogenerated Chemiluminescence of Ru(bpy)2+3 Incorporated in Highly Order Mesoporous SBA-15 Material

Chem. J. Chinese Universities

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Electrogenerated Chemiluminescence of Ru(bpy)²⁺₃ Incorporated in Highly Order Mesoporous SBA-15 Material

LIU Yang^1,2, YANG Xiu-Rong^1*

1. State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China;
2. Graduate School of Chinese Academy of Sciences, Beijing 100039, China

Received:2006-05-11 Revised:1900-01-01 Online:2007-04-10 Published:2007-04-10
Contact: YANG Xiu-Rong

Abstract

Abstract: Highly ordered mesoporous SBA-15 was prepared and characterized by using TEM and N₂ adsorption. The Ru(bpy)²⁺₃ were incorporated into SBA-15 by electrostatic effect. The Ru(bpy)²⁺₃ adsorbed on SBA-15 were immobilized on the surface of a glass carbon electrode and their electrogenerated chemiluminescence(ECL) were investigated. The oxidative current increased and the reductive currents decreased with the addition of tripropylamine(TPA), indicating that TPA presented an obvious catalysis to the oxidation of Ru(bpy)²⁺₃. Meanwhile, the intensity of ECL increased sharply. The ECL intensity was decreased with the increase of scan rate which resulted from the large pore diameter and open pore structures of SBA-15 that improve the diffusion and electron transfer in the SBA-Nafion composite films on the electrodes. The modified electrodes of Ru(bpy)²⁺₃ adsorbed on SBA-15 presented an excellent linear relationship between the ECL intensity and the concentration of TPA in the range of 5.0×10^-5—1.0×10^-2 mol/L with a linear equation of y=71.7+41.2x and showed a good stability in successive 10 cycles, which would be attributed to the high specific area and ordered mesoporous structures of SBA-15.

Key words: Electrogenerated chemiluminescence, Mesoporous material, SBA-15

CLC Number:

O657

TrendMD:

LIU Yang^1,2, YANG Xiu-Rong^1*. Electrogenerated Chemiluminescence of Ru(bpy)²⁺₃ Incorporated in Highly Order Mesoporous SBA-15 Material[J]. Chem. J. Chinese Universities, doi: .

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Electrogenerated Chemiluminescence of Ru(bpy)²⁺₃ Incorporated in Highly Order Mesoporous SBA-15 Material

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