Raman and fluorescence imaging on polyoxometalate composite agarose films

摘要： Composite agarose films were prepared with Eu(III) containing polyoxometalates, in particular the organic-inorganic hybrid [Eu(W5O18)2(pic)4]13- (Hpic = 3-hydroxypicolinic acid) and a Mo blue Eu(III) derivative. The latter compound shows interesting Eu(III) based photoluminescent properties, firstly described for a molybdenum blue compound. Imaging of the films optical properties and morphology was explored by Raman and fluorescence measurements in a confocal microscopy system, together with the AFM profile. Raman and fluorescence imaging were powerful tools for the characterization of the films, in particular concerning its chemical composition and homogeneity at the micrometric scale.