Four benzyl substituted pyridine bromide quaternary ammonium salts,1-benzyl-2′-methylpyridinium bromide([Bz-2-CH3Py]Br),1-benzyl-4′-methylpyridinium bromide([Bz-4-CH3Py]Br),1-benzyl-4′-aminopyridinium bromide([Bz-4...Four benzyl substituted pyridine bromide quaternary ammonium salts,1-benzyl-2′-methylpyridinium bromide([Bz-2-CH3Py]Br),1-benzyl-4′-methylpyridinium bromide([Bz-4-CH3Py]Br),1-benzyl-4′-aminopyridinium bromide([Bz-4-NH2Py]Br) and 1-benzyl-4′-dimethylaminopyridinium bromide([BzDMAP]Br),were synthesized by the reaction of benzyl bromide and 2-methylpyridine,4-methylpyridine,4-aminopyridine or 4-dimethylaminopyridine.Their components and structures were characterized by elemental analyses,infrared spectra,electronic spray mass spectra and conductivity.The experimental results of antibacterial activities indicated that the four salts exhibited good antibacterial properties for colibacillus,bacillus subtilus,aurococcus and bacillus thuringiensis.展开更多
以异丙醇为溶剂,柠檬酸、十二烷基二甲基叔胺和环氧氯丙烷为原料合成了柠檬酸三酯三联季铵盐阳离子表面活性剂(CTTTA)。在反应温度85℃,反应时间12 h 条件下,产物的收率大于90%,纯度97.58%,Krafft 点<0℃。用表面张力法、稳态荧光探...以异丙醇为溶剂,柠檬酸、十二烷基二甲基叔胺和环氧氯丙烷为原料合成了柠檬酸三酯三联季铵盐阳离子表面活性剂(CTTTA)。在反应温度85℃,反应时间12 h 条件下,产物的收率大于90%,纯度97.58%,Krafft 点<0℃。用表面张力法、稳态荧光探针法和电导法在25℃测定的产物临界胶束浓度(cmc)值分别为3.3×10^(-4),3.4×10^(-4)和3.5×10^(-4)mol/L。CTTTA 与传统阳离子表面活性剂相比,有较高的表面活性。展开更多
文摘Four benzyl substituted pyridine bromide quaternary ammonium salts,1-benzyl-2′-methylpyridinium bromide([Bz-2-CH3Py]Br),1-benzyl-4′-methylpyridinium bromide([Bz-4-CH3Py]Br),1-benzyl-4′-aminopyridinium bromide([Bz-4-NH2Py]Br) and 1-benzyl-4′-dimethylaminopyridinium bromide([BzDMAP]Br),were synthesized by the reaction of benzyl bromide and 2-methylpyridine,4-methylpyridine,4-aminopyridine or 4-dimethylaminopyridine.Their components and structures were characterized by elemental analyses,infrared spectra,electronic spray mass spectra and conductivity.The experimental results of antibacterial activities indicated that the four salts exhibited good antibacterial properties for colibacillus,bacillus subtilus,aurococcus and bacillus thuringiensis.
文摘以异丙醇为溶剂,柠檬酸、十二烷基二甲基叔胺和环氧氯丙烷为原料合成了柠檬酸三酯三联季铵盐阳离子表面活性剂(CTTTA)。在反应温度85℃,反应时间12 h 条件下,产物的收率大于90%,纯度97.58%,Krafft 点<0℃。用表面张力法、稳态荧光探针法和电导法在25℃测定的产物临界胶束浓度(cmc)值分别为3.3×10^(-4),3.4×10^(-4)和3.5×10^(-4)mol/L。CTTTA 与传统阳离子表面活性剂相比,有较高的表面活性。