V. Smokal

Optical properties of polymethacrylate with styrylquinoline side chains

In this paper we report the synthesis of side chain methacrylic polymers functionalized with styrylquinoline fragments. The polymerization was carried out in dimethylformamide with azobisisobutyronitrile as initiator. The products of polymerization were characterized by 1H NMR, DSC. A study on the energetics of modelling compounds has been performed by a synergetic use of both electrochemical and optical techniques. The results of photochemical activities of the corresponding polymers are presented.

Optical and photochemical properties of diarylethylenes

In this study, the 2-(4-methacryloxystyryl)quinoline, 2-(4-methacryloxystyryl)-6-methoxyquinoline were synthesized. The polymers built from the free radical polymerization of methacrylic monomers incorporating the diarylethylenes sidegroup have been synthesized in dimethylformamide with azobisisobutyronitrile as initiator. The products of polymerization were characterized and evaluated by 1HNMR, UV spectroscopy. Thermal stability was characterized by DSC method. Their optical and photochemical properties as well as temperature dependence of the photoluminescence of diarylethylenes have been investigated.

Optical properties of diarylethylene polymers

In this paper, we present the optical properties such as absorption, luminescence and IR transmission spectra of 2-styrylquinoline containing polymers thin films. We notice that the extension of the polymer chain in these compounds causes the change their spectroscopic and physical properties.

DR1-doped polymer matrice

In this paper, we investigated Disperse Red 1 embedded into PMMA polymeric matrix. The optical properties were estimated for DR1-PMMA and PMMA thin films by spectroscopy and spectroscopic ellipsometry combined with transmittance measurements. We found that the refractive index of DR1-PMMA thin film is higher compared to PMMA.

The investigation of third-order hyperpolarizabilities and susceptibilities of push-pull azobenzene polymers

To estimate the potential for third-order nonlinear optical (NLO) properties of the title azobenzene polymers, the one-photon absorption (OPA) and two-photon absorption (TPA) characterizations have been determined by configuration interaction (CI) and time-dependent Hartree-Fock (TDHF) methods, respectively. The nonlinear absorption parameters (β) and third-order susceptibilities (χ(3)) have been measured by performing the Z-scan measurements. According to the ab-initio computation results, the investigated compounds exhibit averaged (isotropic) second hyperpolarizabilities (〈γ〉) with non-zero values, implying microscopic third-order optical nonlinearity. Our computed results on TPA cross-sections (δ(ω)), third-order hyperpolarizability and susceptibility values are in accord with the experimental observations of the examined molecules.