Special Issue Article
Parallel factor analysis of EEM of the fluorescence of carbon dots nanoparticles
Article first published online: 21 JUL 2010
Copyright © 2010 John Wiley & Sons, Ltd.
Journal of Chemometrics
Special Issue: Herman Wold Medal Winners 2007–2009
Volume 24, Issue 11-12, pages 655–664, November - December 2010
How to Cite
Leitão, J. M. M., Gonçalves, H. and da Silva, J. C. G. E. (2010), Parallel factor analysis of EEM of the fluorescence of carbon dots nanoparticles. J. Chemometrics, 24: 655–664. doi: 10.1002/cem.1327
- Issue published online: 29 DEC 2010
- Article first published online: 21 JUL 2010
- Manuscript Accepted: 19 MAY 2010
- Manuscript Revised: 14 MAY 2010
- Manuscript Received: 8 FEB 2010
- carbon dots;
The effect of experimental factors [pH and Hg(II)] on the fluorescence excitation emission matrices (EEMs) of nanosensor carbon dots (CDs) was analyzed by multiway decomposition methods based on parallel factor (PARAFAC) analysis. PARAFAC analysis of the EEM structures identifies three components corresponding to two different-sized CDs with the Hg(II) and pH profiles highly correlated plus a background. Parallel profiles with Linear Dependences (PARALIND) model with three components in the excitation–emission spectral modes and two components in the Hg(II) or pH mode gave similar results as PARAFAC, but is more useful from a theoretical point of view because PARALIND shows that the two different-sized CDs have similar chemical reactivity toward Hg(II) and pH. PARAFAC2 was used as a trilinear confirmatory test of the data structures under analysis. Copyright © 2010 John Wiley & Sons, Ltd.