以茚(Indene)和双环戊二烯(DCPD)为原料,通过Diels-Alder双烯加成反应制备非晶型环烯烃共聚物(COC)光学材料单体1,4-亚甲基-1,4,4a,9a-四氢芴(Ind-CPD)。考察了茚(Indene)和双环戊二烯(DCPD)物质的量比、反应温度、压力和时间对加成反...以茚(Indene)和双环戊二烯(DCPD)为原料,通过Diels-Alder双烯加成反应制备非晶型环烯烃共聚物(COC)光学材料单体1,4-亚甲基-1,4,4a,9a-四氢芴(Ind-CPD)。考察了茚(Indene)和双环戊二烯(DCPD)物质的量比、反应温度、压力和时间对加成反应的影响,确定较佳的工艺条件:茚与双环戊二烯的物质的量比为2.2∶1,反应时间3h,反应温度180℃,反应压力0.2MPa。在此条件下,Ind-CPD产品收率为80.5%(以原料茚计),纯度为99.5%[面积归一化法(GC)],三环戊二烯(TCPD)和寡聚物的生成得到有效控制。产物结构经过1 H NMR和MS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
在优化条件下,用NaH、n-BuLi、THF、芴、溴、二溴代烃、二酮为原料,通过溴代反应合成了新型的含芴发光材料前体9-(2,7-二溴-9-正丁基-9-H-芴)壬烷-2,4-二酮(DBBFOD);产物的收率为56%,纯度>99%,其结构经1 H NMR、13 C NMR、MS和元素...在优化条件下,用NaH、n-BuLi、THF、芴、溴、二溴代烃、二酮为原料,通过溴代反应合成了新型的含芴发光材料前体9-(2,7-二溴-9-正丁基-9-H-芴)壬烷-2,4-二酮(DBBFOD);产物的收率为56%,纯度>99%,其结构经1 H NMR、13 C NMR、MS和元素分析确证.展开更多
文摘以茚(Indene)和双环戊二烯(DCPD)为原料,通过Diels-Alder双烯加成反应制备非晶型环烯烃共聚物(COC)光学材料单体1,4-亚甲基-1,4,4a,9a-四氢芴(Ind-CPD)。考察了茚(Indene)和双环戊二烯(DCPD)物质的量比、反应温度、压力和时间对加成反应的影响,确定较佳的工艺条件:茚与双环戊二烯的物质的量比为2.2∶1,反应时间3h,反应温度180℃,反应压力0.2MPa。在此条件下,Ind-CPD产品收率为80.5%(以原料茚计),纯度为99.5%[面积归一化法(GC)],三环戊二烯(TCPD)和寡聚物的生成得到有效控制。产物结构经过1 H NMR和MS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.
