Prof. Ileana RAU

Department of General Chemistry, Faculty of Applied Chemistry and Materials Science, University Politehnica of Bucharest, Bucharest, Romania

Prof. Ileana RAU

Department of General Chemistry, Faculty of Applied Chemistry and Materials Science, University Politehnica of Bucharest, Bucharest, Romania

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Academic Career Length

27Years (2000-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

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5 February 2008 in Advanced Materials

Journal Article

A Switchable NLO Organic‐Inorganic Compound Based on Conformationally Chiral Disulfide Molecules and Bi(III)I₅ Iodobismuthate Networks

W. Bi

N. Louvain

N. Mercier

J. Luc

Ileana RAU

Bouchta Sahraoui

21 March 2002 in Journal of Materials Chemistry

Journal Article

Influence of the silica based matrix on the formation of iron oxide nanoparticles in the Fe2O3–SiO2 system, obtained by sol–gel method

Andrei Jitianu

Maria Crisan

Aurelia Meghea

Ileana RAU

Maria Zaharescu

Composite iron oxide–SiO₂ materials were prepared by a sol–gel method starting with two types of precursors, tetraethoxysilane (TEOS) and methyltriethoxysilane (MTEOS), as the SiO₂ source. As the iron source a soluble Fe²⁺ salt, mainly Fe(SO₄)₂·7H₂O, was used, the iron oxides were generated during the sol–gel process. The amorphous gels obtained were thermally treated up to 1000 °C in order to obtain iron oxides with different structures and grain size. The initial gels and the thermally treated samples were characterised by DTA/TGA analysis, DR-UV–VIS and IR-spectroscopy, EPR measurements, transmission electron microscopy (TEM) and BET surface area methods. The matrices obtained from the precursors play a major role in the evolution of the process. In both cases the initial gels are amorphous. In the non-porous matrix obtained by thermal treatment using methyltriethoxysilane (MTEOS), the tendency for crystallisation increases, and the iron oxide particle size is increased.

13 March 2006 in Angewandte Chemie International Edition

Journal Article

Conglomerate‐to‐True‐Racemate Reversible Solid‐State Transition in Crystals of an Organic Disulfide‐Based Iodoplumbate

Nicolas MOLTECH-Anjou

Anne‐Lise Barres

Michel Giffard

Ileana RAU

François Kajzar

Bouchta Sahraoui

26 September 2008 in Journal of the Optical Society of America B

Journal Article

Comparison of Z-scan and THG derived nonlinear index of refraction in selected organic solvents

Ileana RAU

François Kajzar

Jérôme Luc

Bouchta Sahraoui

Georges Boudebs

Nonlinear index of refraction of a series of organic solvents, measured by the nonlinear imaging (z-scan) technique, is compared with the same values derived from optical third-harmonic generation (THG). The systematic differences in the values obtained from the z-scan measurements and from THG are attributed to three factors: the value of the standard used in THG measurements, important rotational contribution in z-scan measurements, and the difference in dispersion for

n_{2}

derived from Kerr susceptibility and those derived from THG measurements. Using the recently proposed standard silica susceptibility value, one obtains a very good agreement for silica and significant differences for the solvents, particularly for

C S_{2}

and chlorobenzene. A correction based on a three-level model for centrosymmetric media is applied for dispersion.

1 October 2008 in Thin Solid Films

Journal Article

NLO properties of functionalized DNA thin films

Oksana Krupka

Abdelkrim El-Ghayoury

Ileana RAU

Bouchta Sahraoui

James G. Grote

Francois Kajzar

1 October 2012 in Comptes Rendus. Physique

Journal Article

DNA – novel nanomaterial for applications in photonics and in electronics

Ileana RAU

James G. Grote

Francois Kajzar

Xxx Xxx

Functionalization with surfactants and with active molecules of deoxyribonucleic acid (DNA), thin film processing as well as their nonlinear optical and electrical properties are reviewed and discussed. On the basis of a quantum three level model, we show that the anomalous concentration variation of cubic susceptibility

χ^{(3)} (- 3 ω; ω, ω, ω)

in thin films of DNA–CTMA complexes doped with Disperse Red 1 chromophore can be explained by the concentration variation of two-photon resonance contribution. We show also that the DNA complexes, plasticized with glycerol and adequately doped can be processed into self standing conducting membranes with a high electrical conductivity. The measured ionic conductivity at room temperature, depending on dopant used and its concentration, is in the range of

3.5 \times 10^{- 4}

–

10^{- 5} S / cm

and increases linearly as a function of temperature, reaching

10^{- 3} S / cm

at 358 K for the most conducting sample, obeying predominantly the Arrhenius law. Practical applications of DNA complexes are also described and discussed.

About Me

Ileana Rău is a Present Professor at the University POLITEHNICA of Bucharest. She was a Chemical Engineer at S.C. PROCELIA S.A. Brasov from 1994 to 1996, a fulltime Ph.D. student at the University POLITEHNICA of Bucharest from 1996 to 1997, an Assistant Professor at the University POLITEHNICA of Bucharest from 1997 to 2001, a Lecturer at the University POLITEHNICA of Bucharest from 2001 to 2009, and an Associate Professor at the University POLITEHNICA of Bucharest from 2009 to 2014. She studied at the University POLITEHNICA Bucharest, Faculty of Industrial Chemistry, Chemical Engineering Division, from 1989 to 1994. She obtained a Master's degree at the University POLITEHNICA Bucharest, with a specialization in applied thermodynamics and electrochemistry from 1994 to 1995. She obtained a Ph.D. in chemistry at the University POLITEHNICA Bucharest in 2002, a D.Sc. (HDR ‐ Habilite de Diriger des Recherches) in physics at the University of Angers, France, in 2007, and a D.Sc. (HDR ‐ Habilite de Diriger des Recherches) in chemical engineering at the University POLITEHNICA of Bucharest, Romania, in 2013.

Prof. Ileana RAU

Prof. Ileana RAU

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