Abstract
Ortho-Quinones can be differentiated from other oxygen-contg. surface functional groups on the surfaces of graphite, glassy C, bamboo-like, and hollow-tube multiwalled C nanotubes and single-walled C nanotubes by chem. labeling them with either an inorg. hexaamminechromium(III) complex or org. 1,2-phenylenediamine derivs. Both types of labels can be obsd. using cyclic voltammetry or by XPS and used to quantify the nos. and relative distribution of ortho-quinones from other oxygen-contg. species on the surface including electroactive para-quinones which are not labeled. Labeling of ortho-quinones with 1,2-phenylenediamine derivs. gave phenazine-like adducts on the graphitic surface which have a distinct voltammetry particularly from that of the underivatized para-quinones. [on SciFinder(R)]
Original language | English |
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Pages (from-to) | 4964-4974 |
Number of pages | 11 |
Journal | Chemistry of Materials |
Volume | 19 |
Issue number | 20 |
DOIs | |
Publication status | Published - 2007 |
Keywords
- phenylenediamine labeling differentiation ortho quinone surface
- differentiating ortho para quinone surface graphite glassy carbon nanotube
- chromium ammine complex labeling differentiation ortho quinone surface
- cyclic voltammetry XPS labeling ortho quinone surface differentiation