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Thin films of Cu(II)-o,o′-dihydroxy azobenzene nanoparticle-embedded polyacrylic acid (PAA) for nonlinear optical applications developed by matrix assisted pulsed laser evaporation (MAPLE) |
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| Authors: | Catalin Constantinescu Ana Emandi Catalin Negrila Costel Cotarlan |
| Affiliation: | a INFLPR - National Institute for Laser, Plasma and Radiation Physics, PPAM group, 409 Atomistilor Blvd, RO-077125 Magurele, Bucharest, Romania b University of Bucharest, Faculty of Chemistry, Department of Inorganic Chemistry, 23 Dumbrava Rosie St., RO-010184 Bucharest, Romania c National Institute for Optoelectronics INOE 2000, 1 Atomistilor Blvd., PO Box MG 5, RO-077125 Magurele, Bucharest, Romania d National Institute for Materials Physics, 105 bis Atomistilor Blvd., PO Box MG 7, RO-077125 Magurele, Bucharest, Romania |
| Abstract: | Thin films based on two different metal-organic systems are developed by MAPLE and their nonlinear optical applications are explored. A complex of o,o′-dihydroxy azobenzene with Cu2+ cation is found to organize as a non-central symmetric crystallite. A simple protocol is developed for the in situ fabrication of highly monodisperse copper-complex nanoparticles in a polymer film matrix of polyacrylic acid. The thin films were deposited on quartz substrates by MAPLE (matrix assisted pulsed laser evaporation) using a Nd:YAG laser working at 355 nm. Atomic force microscopy (AFM), Fourier transform infrared (FTIR), X-ray photoelectron spectroscopy (XPS), and optical second harmonic generation (SHG) were performed on the samples. The optical limiting capability of the nanoparticle-embedded polymer film is investigated. |
| Keywords: | MAPLE Thin film Copper-complex nanoparticle Polyacrylic acid |
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