Raman and Fluorescence Imaging of Polyoxometalate Composite Agarose Films

Abstract

Composite agarose films were prepared with Eu III containing polyoxometalates, in particular the organic-inorganic hybrid [Eu(W 5 O 18 ) 2 (pic) 4 ] 13-(Hpic = 3-hydroxypicolinic acid) and a Mo blue Eu III derivative. The latter compound shows interesting Eu III based photoluminescence properties, described for a molybdenum blue compound for the first time. Imaging Eur.479 Figure 4. Emission spectra recorded in a single spot characteristic of the film EuW10/agr (a) and in two spots of the film EuW10pic/agr showing the emission from the filmogenic areas (b) and from the crystallites (c).