Authors Oertel, U. ; Dudkina, M.M. ; Komber, H. ; Pilch, B. ; Tenkovtsev, A.V. ; Böhme, F.
Title A spectroscopic study on the dissociation behavior of 4-hydroxybenzylideneacetone type NLO chromophores in the presence of sodium hydroxide
Date 21.11.2006
Number 13470
Abstract Interactions of phenolic and carboxylic groups containing NLO chromophores with NaOH in methanol were investigated by UV/vis, fluorescence and 1H NMR measurements. With the aid of a mathematical fitting procedure, it was possible to separate the single contributions of the differently charged chromophore molecules to the overall UV/vis spectra. Individual concentrations of the involved species in dependence on the NaOH concentration were calculated by approximation of measured and calculated UV/vis spectra.<br />The fully deprotonated chromophores with their higher extent of conjugation did not exhibit remarkable fluorescence while the 3rd order NLO activity was observed to show the opposite behavior.
Publisher Optical Materials
Citation Optical Materials 29 (2006) 377-385

Back to list