Paper Title:
Theoretical Study on the Influence of Iron Mordant in the Optical Properties of Natural Dyes
  Abstract

Geometry optimization of free alizarin, purpurin and luteolin and coordinated Fe(II) complexes was performed at DFT/B3LYP level. TD-DFT spectra were also calculated for free and coordinated alizarin and luteolin. For the Fe(II) complexes several spin multiplicities have been calculated and quintuplet spin structures were found to be the most stable. In the luteolin-Fe(II) complex, the coordination of the chromophore with the iron leads to a decrease in the lower energy band. In the case of luteolin complex, a new band emerges due to interactions between the delocalized π electrons of the luteolin molecule with the d metal orbitals.

  Info
Periodical
Materials Science Forum (Volumes 587-588)
Edited by
António Torres Marques, António Fernando Silva, António Paulo Monteiro Baptista, Carlos Sá, Fernando Jorge Lino Alves, Luís Filipe Malheiros and Manuel Vieira
Pages
608-612
DOI
10.4028/www.scientific.net/MSF.587-588.608
Citation
M. Carreira, A. E. Candeias, A. Manhita, C.T. Costa, P.J. Mendes, A.J. Palace Carvalho, J.P. Prates Ramalho, "Theoretical Study on the Influence of Iron Mordant in the Optical Properties of Natural Dyes ", Materials Science Forum, Vols. 587-588, pp. 608-612, 2008
Online since
June 2008
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$32.00
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