This paper investigated a rapid one pot synthesis method of some substituted（9 carbazoly） carboxylic acids（3a3m）. The reaction was carried out by mixing of the 9H carbazoles derivatives with bromo esters and potas...This paper investigated a rapid one pot synthesis method of some substituted（9 carbazoly） carboxylic acids（3a3m）. The reaction was carried out by mixing of the 9H carbazoles derivatives with bromo esters and potassium hydroxide using DMF as solvent under microwave irradiation without catalyst. The optimized experiment conditions were 48 min irradiation time and 375 W microwave power. The required range of molar ratio of KOH to substituted carbazole was 35. The biological activities of some compounds have been tested. They have medium to weak antimicrobial activities.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This paper investigated a rapid one pot synthesis method of some substituted（9 carbazoly） carboxylic acids（3a3m）. The reaction was carried out by mixing of the 9H carbazoles derivatives with bromo esters and potassium hydroxide using DMF as solvent under microwave irradiation without catalyst. The optimized experiment conditions were 48 min irradiation time and 375 W microwave power. The required range of molar ratio of KOH to substituted carbazole was 35. The biological activities of some compounds have been tested. They have medium to weak antimicrobial activities.
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.
