以丙烯酸甲酯(MA)与二乙胺为原料,经Michael加成反应、酰胺化反应和热解反应,合成了N,N-二乙基丙烯酰胺(DEAA),考察了工艺条件对各产物收率的影响。结果表明,较佳的Michael加成反应条件为:n(MA)∶n(二乙胺)=1∶1.1,反应温度75℃,反应时...以丙烯酸甲酯(MA)与二乙胺为原料,经Michael加成反应、酰胺化反应和热解反应,合成了N,N-二乙基丙烯酰胺(DEAA),考察了工艺条件对各产物收率的影响。结果表明,较佳的Michael加成反应条件为:n(MA)∶n(二乙胺)=1∶1.1,反应温度75℃,反应时间4h,3-二乙基氨基丙酸甲酯收率可达98.7%;较佳的酰胺化反应条件为:n(3-二乙基氨基丙酸甲酯)∶n(二乙胺)=1∶3,m(甲醇钠)∶m(3-二乙基氨基丙酸甲酯)=1∶50,反应温度170℃,反应时间24h,3-二乙基氨基-N,N-二乙基丙酰胺收率可达81.1%;较佳的热解反应条件为:热解温度170℃,热解时间3h,DEAA收率74.4%,分别用FT-IR与1 H NMR对产物结构进行了表征。展开更多
An acrylic monomer bearing carbazole moiety,3 methacrylamido 9 ethylcarbazole (MAECz)was synthesized and polymerized radically.Fluorescence studies showed that at the same chromophore concentration,the fluorescence in...An acrylic monomer bearing carbazole moiety,3 methacrylamido 9 ethylcarbazole (MAECz)was synthesized and polymerized radically.Fluorescence studies showed that at the same chromophore concentration,the fluorescence intensity of the polymer (P(MAECz) was much stronger than that of the monomer.This can be explained by what we termed fluorescence “Structural Self Quenching Effect”(SSQE).The stern volmer constants of P(MAECz) in solution quenched by several electron deficient vinyl monomers were obtained.It was found that the quenching efficiency of the quenchers was relevant to the degree of the electron deficiency.Also,the photopolymerization of acrylonitrile (AN) initiated by MAECz was investigated kinetically and a tentative initiation mechanism was proposed.展开更多
文摘以丙烯酸甲酯(MA)与二乙胺为原料,经Michael加成反应、酰胺化反应和热解反应,合成了N,N-二乙基丙烯酰胺(DEAA),考察了工艺条件对各产物收率的影响。结果表明,较佳的Michael加成反应条件为:n(MA)∶n(二乙胺)=1∶1.1,反应温度75℃,反应时间4h,3-二乙基氨基丙酸甲酯收率可达98.7%;较佳的酰胺化反应条件为:n(3-二乙基氨基丙酸甲酯)∶n(二乙胺)=1∶3,m(甲醇钠)∶m(3-二乙基氨基丙酸甲酯)=1∶50,反应温度170℃,反应时间24h,3-二乙基氨基-N,N-二乙基丙酰胺收率可达81.1%;较佳的热解反应条件为:热解温度170℃,热解时间3h,DEAA收率74.4%,分别用FT-IR与1 H NMR对产物结构进行了表征。
文摘An acrylic monomer bearing carbazole moiety,3 methacrylamido 9 ethylcarbazole (MAECz)was synthesized and polymerized radically.Fluorescence studies showed that at the same chromophore concentration,the fluorescence intensity of the polymer (P(MAECz) was much stronger than that of the monomer.This can be explained by what we termed fluorescence “Structural Self Quenching Effect”(SSQE).The stern volmer constants of P(MAECz) in solution quenched by several electron deficient vinyl monomers were obtained.It was found that the quenching efficiency of the quenchers was relevant to the degree of the electron deficiency.Also,the photopolymerization of acrylonitrile (AN) initiated by MAECz was investigated kinetically and a tentative initiation mechanism was proposed.
