A high performance red-sensitive holographic recording material was studied.After acrylic acid was added into PPA system,the holograms of high diffraction efficiency,which was stable in high humidty environment for a ...A high performance red-sensitive holographic recording material was studied.After acrylic acid was added into PPA system,the holograms of high diffraction efficiency,which was stable in high humidty environment for a long time,were obtained.展开更多
An one pot method is used for the synthesis of 1,2,4,6 tetraaryl 1,4 dihydropyrazine by the reaction of phenacyl bromides with arylamines.This synthetic method provides an easier and simpler access to this kind of com...An one pot method is used for the synthesis of 1,2,4,6 tetraaryl 1,4 dihydropyrazine by the reaction of phenacyl bromides with arylamines.This synthetic method provides an easier and simpler access to this kind of compounds as compared with the that in reference.展开更多
文摘A high performance red-sensitive holographic recording material was studied.After acrylic acid was added into PPA system,the holograms of high diffraction efficiency,which was stable in high humidty environment for a long time,were obtained.
文摘An one pot method is used for the synthesis of 1,2,4,6 tetraaryl 1,4 dihydropyrazine by the reaction of phenacyl bromides with arylamines.This synthetic method provides an easier and simpler access to this kind of compounds as compared with the that in reference.