Département de chimie moléculaire

The authors synthesized the 1-dimensional nanostructure of Zn 5,10,15,20-tetra(4-pyridyl)-21H,23H-porphine (ZnTPyP) via a self-assembly technique. Using Na dodecyl sulfate (SDS) as soft template, the self-assembled ZnTPyP (SA-ZnTPyP) had the morphol. of hexagonal nanoprisms with a uniform size (diam. of 100 nm). The SA-ZnTPyP exhibited remarkably different spectral properties compared to those of the original ZnTPyP. The as-prepd. SA-ZnTPyP was used to modify glassy C electrodes (GCE), and the electrochemiluminescence (ECL) behaviors of the SA-ZnTPyP/GCE were studied. The hydrophilic C dots (C-dots) could efficiently prevent the dissoln. of SA-ZnTPyP in DMF contg. 0.1 mol L-1 TBAP and, simultaneously, could accelerate electron transfer. Therefore, the enhanced ECL was realized by C-dots/SA-ZnTPyP/GCE by using H2O2 as co-reactant. This amplification of ECL was further studied by ECL spectroscopies and cyclic voltammetry, and the corresponding mechanism is proposed. [on SciFinder(R)]