NOVEL NON-AGGREGATED UNSYMMETRICAL METALLOPHTHALOCYANINES FOR 2ND-ORDER NONLINEAR OPTICS

Novel soluble unsymmetrical metallophthalocyanines with twelve 2,2,2-t rifluoroethoxy groups as donor substituents and a mono-nitro or an exo cyclic conjugated nitro group as an acceptor substituent have been syn thesized and characterized. A study of the concentration dependence of UV-VIS absorption spectra showed they were non-aggregated phthalocyan ines in solution and in doped polymer films. Second harmonic generatio n of spin-coated thin films of poly(methyl methacrylate) doped with th ese metallophthalocyanines was observed after electric poling at 110 d egrees C for 30 min at a fundamental wavelength of 1.064 mu m.