- Ceramic nanofibers based on oxide semiconductors ZnO/(Sn, La, Sm, Er) and SnO2/Ni, Zn by electrospinning method were obtained. These materials were characterized morphologically and structurally using different instrumental techniques (XRD, TEM, SEM, DSC, TG, FT-IR spectroscopy, UV-VIS and Raman, etc), and correlations between optical, thermal and electrical properties and the preparation conditions of these nanocomposites were determined in order to find new applications. Ceramic materials based on ZnO doped with Sn, La, Sm, Er present a high efficiency for the degradation of some organic dyes such as Rhodamine B and Congo Red. Electrical and humidity measurements proved that the nanofibers containing SnO2 doped with NiO can be utilized in obtaining humidity sensors.

- Intra/inter-molecular interactions in solutions and in solvent mixtures (preferential solvation) and the effect of medium factors – polarity, acidity, bazicity - on the optical properties of some organic compounds containing aromatic rings: 1,3,4-oxadiazole, quinoxaline, phenolphthaleine, fluorene, bisphenol A. Chemosensor properties were analysed for some metal ions such as Cd2+, Cu2+, Mg2+, Ag+, Co2+, Ni2+, Sn2+, Zn2+ si Mn2+, which play an important role in living organisms and environment. Spectral studies were evidenced a high sensitivity for Cu2+, Co2+ si Ag+ ions. Solvatochromic analysis of these chromophores was utilized to estimate the optical nonlinear properties and to determine the characteristics of intramolecular charge transfer  

- Quenching processes of the emission in indolizine, isoquinoline derivatives, analysis of sensor properties for nitroaromatics were analysed.

- Structural characterization of some composites based on EPDM/flax fibers and EPDM/butyl rubber

- Solvatochromic behavior of some azomaleimide derivatives using density functional theory (DFT), charge transfer in azomaleimides by quantochemical calculations (DFT, TD-DFT, ab initio)

- Photochromic processes in azoaromatic compounds

- Polymer composites containing metal oxide nanoparticles: polysulfone (PSF)/nickel ferrite, polythiophene/nickel nanoparticles, PVFD/cobalt ferrite, polysulfone nanofibers/nickel, tin oxide nanoparticles

Obtaining and characterization of cerium oxide nanoparticles, zinc oxide doped with cerium oxide nanoparticles, the influence of dopant nature on the optical properties