The investigation of second harmonic generation from novel molecules [(E)-N-alkyl-4-{2-[4-(dialkylamino)phenyl]ethenyl}pyridazinium iodide]
作者:T-r. Cheng、C-h. Huang、L-b. Gan、C-p. Luo、A.-c. Yu、X-s. Zhao
DOI:10.1039/a707724f
日期:——
(E)-N-Methyl-4-2-[4-(dihexadecylamino)phenyl]ethenyl}pyridazinium iodide (MHPd), (E)-N-octadecyl-4-2-[4-(dimethylamino)phenyl]ethenyl}pyridazinium iodide (OMPd), (E)-N-octadecyl-4-2-[4-(diethylamino)phenyl]ethenyl}pyridazinium iodide (OEPd), (E)-N-octadecyl-4-2-[4-(dibutylamino)phenyl]ethenyl}pyridazinium iodide (OBPd) have been designed and synthesized. Their Langmuir–Blodgett film forming properties and second harmonic generation were studied. According to the results observed, MHPd is the best among the four congeners. By comparing the NLO properties of OMPd with those of a known compound, OMPy [(E)-N-octadecyl-4-2-[4-(dimethylamino)phenyl]ethenyl}pyridinium iodide], the impairing effect of the second nitrogen in the six-membered pyridazine ring was examined experimentally and theoretically.
(E)-N-甲基-4-2-[4-(二十六烷基氨基)苯基]乙烯基}碘化哒嗪鎓 (MHPd), (E)-N-十八烷基-4-2-[4-(二甲基氨基)苯基]乙烯基}碘化哒嗪 (OMPd)、(E)-N-十八烷基-4-2-[4-(二乙氨基)苯基]乙烯基}碘化哒嗪 (OEPd)、(E)-N-十八烷基-4-2-设计并合成了[4-(二丁基氨基)苯基]乙烯基}碘化哒嗪鎓(OBPd)。研究了它们的 Langmuir-Blodgett 成膜特性和二次谐波的产生。根据观察结果,MHPd是四种同类物中最好的。通过将OMPd的NLO性质与已知化合物OMPy [(E)-N-十八烷基-4-2-[4-(二甲基氨基)苯基]乙烯基}碘化吡啶]进行比较,发现第二个氮的削弱作用对六元哒嗪环的结构进行了实验和理论研究。