Synthesis, characterization and film formation properties of a novel diazol system containing rare earth complex of nonlinear optical material

摘要

Two kinds of complexes containing rare earth with strong second harmonic generation (SHG)—4-[(N,N'-(diethylamino) phenyl) azo]-l-octodecyl-pyridinium-tetrakis (4-benzoyl-l-phenyl-3-meyhyl- pyrazolone-5) dysprosium (compound A) and 4-[(4-N,N'-(diethylamino) phenyl) azo]-l-octodecyl-pyridinium-tri (4-benzoyl-l-phenyl-3-methyl-pyrazolone-5) -(l-phenyl-3-methyl-4-dodecanoyl-pyrazolone-5) dysprosium (compound B) were synthesized and characterized by elemental analysis, FT-IR, FT-Raman, and UV spectra.The surface pressure (pi)-area (A) isotherms for both compounds onto subphase (water) at room temperature showed that the two compounds can form stable Langmuir-Blodgett films. The SHG measurement indicated that this system is the best nonlinear opticalmaterial reported in literature.