TY - JOUR JF - ijop JO - IJOP VL - 1 IS - 1 PY - 2007 Y1 - 2007/6/01 TI - Second Harmonic Generation Diagnostic of Layer by Layer Deposition from Disperse Red 1–Functionalized Maleic Anhydride Copolymer TT - N2 - Layer-by-layer (LBL) electrostatic assembly of poly-electrolytes is proving to be an increasingly rich and versatile technique for the formation of multilayered thin films with a wide range of electrical, magnetic, and optical properties. In the present work we synthesized a new nonlinear optical (NLO) maleic acid copolymer containing Disperse Red 1 moieties, built-up multilayer assemblies by alternate adsorption of poly (allylamine hydrochloride) (PAH) and maleic copolymer derivative, and carried out an investigation on their second harmonic generation (SHG) properties. The resulting multilayer assemblies exhibit SHG which arises from the non-centrosymmetric alignment of the chromophore in the copolymer. The SHG signal increases with the number of chromophore-containing polymer layers, up to 5 layers. Further assembly reduces the signal SP - 1 EP - 6 AU - Aldea, G. AU - Gutiérrez, H. AU - M. Nunzi, J. AU - C. Chitanu, G. AU - Sylla, M. AU - C. Simionescu, B. AD - Romanian Academy, "Petru Poni” Institute of Macromolecular Chemistry Iasi KW - Layer-by-Layer KW - Electrostatic assembly KW - Maleic anhydride copolymer KW - Second harmonic generation KW - Nonlinear optics UR - http://ijop.ir/article-1-309-en.html ER -