Parallel factor analysis of EEM of the fluorescence of carbon dots nanoparticles

• Type: Article in International Scientific Journal
• Date: 2010

Authors

Joao M M Leitao (Author) Other; Helena Goncalves (Author) Other; Joaquim C G E Esteves da Silva (Author) FCUP

Journal

Title: Journal of Chemometrics

Vol. 24 No. 11-12

Pages: 655-664

ISSN: 0886-9383

Publisher: Wiley-Blackwell

Indexing

ISI Web of Knowledge - 11 Citations

Scopus - 14 Citations

Scientific classification

FOS: Engineering and technology > Electrical engineering, Electronic engineering, Information engineering

CORDIS: Physical sciences > Chemistry > Analytical chemistry > Spectrochemistry ; Physical sciences > Chemistry > Inorganic chemistry

Other information

Authenticus ID: P-003-1FT

DOI: 10.1002/cem.1327

Abstract (EN): 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 (C) 2010 John Wiley & Sons, Ltd.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 10