Potential-Resolved Multicolor Electrochemiluminescence of N-(4-Aminobutyl)-N-ethylisoluminol/tetra(4-carboxyphenyl)porphyrin/TiO2 Nanoluminophores
| Autor: | Hua Cui, Zhili Han, Jiangnan Shu, Dexin Du, Tianhua Zheng, Guizheng Zou |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
Aqueous solution
biology Tio2 nanoparticles 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology biology.organism_classification Photochemistry 01 natural sciences Porphyrin 0104 chemical sciences Analytical Chemistry chemistry.chemical_compound chemistry Luminophore Tetra N-(4-aminobutyl)-N-ethylisoluminol Moiety Electrochemiluminescence 0210 nano-technology |
| Zdroj: | Analytical Chemistry. 89:12636-12640 |
| ISSN: | 1520-6882 0003-2700 |
| DOI: | 10.1021/acs.analchem.7b04175 |
| Popis: | Most electrochemiluminescence (ECL) studies involve single luminophore with a unique emission process, which severely limits its applications. Recently, multicolor ECL has attracted considerable interests. Herein, we report a novel nanoluminophore prepared by coating 5,10,15,20-tetrakis(4-carboxyphenyl)-porphyrin (TCPP) and N-(4-aminobutyl)-N-ethylisoluminol (ABEI) on the surface of TiO2 nanoparticles (TiO2-TCPP-ABEI), which exhibited unique potential-resolved multicolor ECL emissions using H2O2 and K2S2O8 as coreactants in an aqueous solution. Three ECL peaks, ECL-1 at 458 nm, ECL-2 at 686 nm, and ECL-3 at 529 nm, were obtained with peak potentials of 1.05, −1.65, and −1.85 V, which were attributed to the ECL emission of ABEI, TCPP, and TiO2 moiety of the nanoluminophores, respectively. Potential-resolved multicolor ECL from a nanoluminophore was observed for the first time in an aqueous solution. It opens a new research area of multicolor ECL of nanoluminophores, which is of great importance in ECL fiel... |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|