FUNCTIONALIZED DNA THIN FILMS

Investigation of NLO Properties of some Selected Polythiophenes Electrodeposited on ITO Glasses

NLO properties of polythiophenes galvanostatically electrodeposited on ITO glasses

International audience; A study of nonlinear optical properties of ClO4-doped polythiophenes, galvanostatically electrodeposited on ITO glasses, was carried out using second and third harmonic generation measurements. The effect of the oxidation state of the polymeric films was studied by comparing the nonlinear optical response of oxidised and reduced polythiophenes. Reduced polymeric films show higher values of the second and third order susceptibilities and a lower absorbance in respect to the oxidised ones. The morphology of the polythiophene films was studied by scanning electron and atomic force microscopes.

Characterization and Investigation of NLO Properties of some Selected Electrodeposited Polythiophenes

In this work we study the electronic properties of ClO− doped polythiophenes and discuss the nonlinear optical properties of these organic 4 compounds galvanostatically electrodeposited on ITO glasses. The investigation on the electronic properties (band gap, flat band potential) was performed by means of a non-destructive optical technique, photocurrent spectroscopy (PCS). The investigation on the nonlinear optical response was carried out by means of second and third harmonic generation (SHG and THG) measurements. In particular, the effect of the oxidation state of the polymeric films was studied by comparing the NLO response of oxidized and reduced polythiophenes. Reduced poly- meric films …

Electrochemical growth and physico-chemical characterization in organic medium of Nb2O5 thin films

Investigations about the energetics and the electrical properties of niobium thin film, electrochemically grown, were performed in an organic solution of acetonitrile and lithium perchlorate. The study of the energetics of the Nb O /organic solution interface was performed by means of a non-destructive optical technique, photocurrent 2 5 spectroscopy. By means of this technique, it was possible estimating the value of the flat band potential and locating conduction and valence band. A more cathodic value of flat band potential in respect with acidic solution was found in organic medium. From impedance spectra, the electrical circuit that gives best fitting values is constituted by two resis…

CCDC 128517: Experimental Crystal Structure Determination

Related Article: N.Terkia-Derdra, R.Andreu, M.Salle, E.Levillain, J.Orduna, J.Garin, E.Orti, R.Viruela, R.Pou-Amerigo, B.Sahraoui, A.Gorgues, J.-F.Favard, A.Riou|2000|Chem.-Eur.J.|6|1199|doi:10.1002/(SICI)1521-3765(20000403)6:7<1199::AID-CHEM1199>3.3.CO;2-7