LANGMUIR-BLODGETT-FILM AND 2ND-HARMONIC GENERATION OF A SERIES OF NEWNONLINEAR-OPTICAL RARE-EARTH COMPLEXES

Four kinds of amphiphilic rare earth complexes containing the new chro mophore: Tetrakis(4-benzoyl-1-phenyl-3-methyl-pyrazolone-5) Dysprosium (compound A), nium-Tri(4-benzoyl-1-phenyl-3-methyl-pyrazolone-5) - (4 -hexadecanoyl-1-phenyl-3-methy Pyrazolone5)Dysprosium(compound B), ium -Tetrakis(2-thenoyl-trifluoroacetone)Dysprosium (compound C) and one-( 4-hexadecanoyl-1-phenyl-3-methyl-pyrazoloen-5 Dysprosium (compound D), and their iodide (compound E), were synthesized. The film-forming pro perties of compound A and B are good while compounds C, D and E cannot form stable Langmuir film. The second-order molecular hyperpolarizabi lity beta of the rare earth complexes were evaluated to be 1.3x10(-28) e.s.u, and 5.9x10(-28) e.s.u. for compounds A and B respectively.