The value of the second-order harmonic generation for the powder of 10-alkylacridones, synthesized by using acridone, was measured by using Nd: YAG as a laser source and the results show that these compounds have a go...The value of the second-order harmonic generation for the powder of 10-alkylacridones, synthesized by using acridone, was measured by using Nd: YAG as a laser source and the results show that these compounds have a good nonlinear optical property and the differences of the volume and electron property for the different substitutents on 10-position have a little effect on their values of second-order harmonic generation(SHG).展开更多
Twenty 10-hydrocarbylacridones and 2-methylacridone, 1-hydroxyacridone were synthesized from acridone and characterized by mp, IR, UV, 1H NMR and MS. Using Nd:YAG as a laser source, the second-order harmonic generatio...Twenty 10-hydrocarbylacridones and 2-methylacridone, 1-hydroxyacridone were synthesized from acridone and characterized by mp, IR, UV, 1H NMR and MS. Using Nd:YAG as a laser source, the second-order harmonic generation (SHG) values of the acridone derivatives were measured in powder state as compared with urea powder. The results showed that the SHG values of some of 10-hydrocarbylacridones were higher than that of urea, while others were lower. Although the hydrocarbyl substituents (R) attached to nitrogen atom of acridone were different in size and electronegativity, they had a little effect on the SHG values of 10-hydrocarbylacridones. Substituents, such as methyl or hydroxy group connected to the phenyl ring, caused a little effect on the SHG values, too, compared with acrid one. The ability of R to push electron toward the nitrogen atom or to pull electron from the nitrogen atom play an important role on the maximum wavelengths of UV-visible absorption of acridone derivatives.展开更多
文摘The value of the second-order harmonic generation for the powder of 10-alkylacridones, synthesized by using acridone, was measured by using Nd: YAG as a laser source and the results show that these compounds have a good nonlinear optical property and the differences of the volume and electron property for the different substitutents on 10-position have a little effect on their values of second-order harmonic generation(SHG).
基金Project supported by the SeientificTechnical Commission of Guangzhou (No. 98-J-013-01)the National Natural Science Foundation for Doctors of Guangdong Province.
文摘Twenty 10-hydrocarbylacridones and 2-methylacridone, 1-hydroxyacridone were synthesized from acridone and characterized by mp, IR, UV, 1H NMR and MS. Using Nd:YAG as a laser source, the second-order harmonic generation (SHG) values of the acridone derivatives were measured in powder state as compared with urea powder. The results showed that the SHG values of some of 10-hydrocarbylacridones were higher than that of urea, while others were lower. Although the hydrocarbyl substituents (R) attached to nitrogen atom of acridone were different in size and electronegativity, they had a little effect on the SHG values of 10-hydrocarbylacridones. Substituents, such as methyl or hydroxy group connected to the phenyl ring, caused a little effect on the SHG values, too, compared with acrid one. The ability of R to push electron toward the nitrogen atom or to pull electron from the nitrogen atom play an important role on the maximum wavelengths of UV-visible absorption of acridone derivatives.
