Journal
TALANTA
Volume 106, Issue -, Pages 174-180Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.talanta.2012.12.025
Keywords
Quenching of electrochemiluminescence; Ru(bpy)(3)(2+); TPA; Resonance energy transfer; Malachite green; Crystal violet
Categories
Funding
- National Natural Science Foundation of China [21175108, 21165016, 21165015]
- Science and Technology Support Projects of Gansu Province [090GKCA036, 1011GKCA025]
- Key Laboratory of Polymer Materials of Gansu Province, China
Ask authors/readers for more resources
Efficient and stable quenching of electrochemiluminescence of Ru(bpy)(3)(2+)/TPA by malachite green(MG) and crystal violet(CV) at the glass carbon (GC) electrode is reported. A novel quenching mechanism has been proposed. Resonance energy transfer from the excited-state luminophore Ru(bpy)(3)(2+)* to MG/CV and dynamic quenching are suggested as the mechanism for quenching ECL The quenching mechanism is discussed in detail based on UV-visible absorption spectra, cyclic voltammograms, ECL curves and fluorescence methods. MG shows more efficient quenching than CV. Moreover, the quenched ECL intensity versus the concentration of MG and CV are linear over the concentration ranges of 8 x 10(-10)-8 x 10(-7) M and 3.46 x 10(-9)-5.5 x 10(-7) M, respectively. The corresponding limit of detection (LOD) was 1.0 x 10(-10) M for MG and 1.1 x 10(-10) M for CV (S/N=3). (C) 2013 Elsevier B.V. All rights reserved.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available