A variety of disubstituted diphenylacetylenes and related compounds
have been synthesized by a modified Horner–Emmons reaction, and
their second harmonic generation (SHG) has been evaluated by the Kurtz
powder method. The diphenylacetylenes with weak electron-donating and
-withdrawing groups are found to be efficient for SHG, as well as having
the lowest cut-off wavelength.
通过改进的Horner-Emmons反应合成了多种二取代二
苯乙炔及相关化合物,并通过Kurtz粉末法评估了它们的二次谐波发生(S
HG)性能。研究发现,具有弱供电子和吸电子基团的二
苯乙炔在S
HG方面效率较高,同时具有最低截止波长。