以丙酸和硝基苯为混合溶剂,苯甲醛、对羟基苯甲醛和吡咯为原料合成了5-对羟基苯基-10,15,20-三苯基卟啉(HPTPP).然后以HPTPP和环氧氯丙烷为原料,在NaOH催化条件下合成了5-[4-(2,3-环氧丙氧基)苯基]-10,15,20-三苯基卟啉(EPPTPP).利用傅...以丙酸和硝基苯为混合溶剂,苯甲醛、对羟基苯甲醛和吡咯为原料合成了5-对羟基苯基-10,15,20-三苯基卟啉(HPTPP).然后以HPTPP和环氧氯丙烷为原料,在NaOH催化条件下合成了5-[4-(2,3-环氧丙氧基)苯基]-10,15,20-三苯基卟啉(EPPTPP).利用傅里叶变换红外光谱仪(FTIR)、核磁共振波谱仪(NMR)、紫外可见分光光度计(UV-Vis)和荧光分光光度计分别对HPTPP和EPPTPP的化学结构和光学性质进行了表征与测试.结果表明:FTIR谱图中,1 347cm-1和917cm-1处为EPPTPP卟啉环中C N键伸缩振动吸收峰和环氧化物环的(C—OC键)不对称伸缩振动吸收峰.EPPTPP的1 H NMR谱图中,在δ2.94～4.56内5个位移峰峰面积比为1∶1∶1∶1∶1,与EPPTPP中环氧基团的不同氢原子数比完全一致.UV-Vis谱图中,具有与卟啉结构相符合的吸收峰,表明成功合成了EPPTPP.通过荧光光谱分析了HPTPP和EPPTPP的荧光性质,并计算得到了二者的荧光量子产率分别为0.140和0.143.展开更多
In the presence of Triton X100,the color reaction of Mercury(Ⅱ)with 2hydroxy5nitrophenyldiazoaminoazobenene(HNPDAAB)was studied.Mercury(Ⅱ)reacts with HNPDAAB and forms a 1∶1 red complex at pH=95-110 buffer solution...In the presence of Triton X100,the color reaction of Mercury(Ⅱ)with 2hydroxy5nitrophenyldiazoaminoazobenene(HNPDAAB)was studied.Mercury(Ⅱ)reacts with HNPDAAB and forms a 1∶1 red complex at pH=95-110 buffer solution of Na2B4O7NaOH.The molar absorptivity is 256×105L·mol-1·cm-1.Beer’s law is obeyed in the concentration range of 0～12μg/25mL for Mercury(Ⅱ).The results are in agreement with those determined by the conventional method.This new method was used to determine trace mercury in wastewater.展开更多
文摘以丙酸和硝基苯为混合溶剂,苯甲醛、对羟基苯甲醛和吡咯为原料合成了5-对羟基苯基-10,15,20-三苯基卟啉(HPTPP).然后以HPTPP和环氧氯丙烷为原料,在NaOH催化条件下合成了5-[4-(2,3-环氧丙氧基)苯基]-10,15,20-三苯基卟啉(EPPTPP).利用傅里叶变换红外光谱仪(FTIR)、核磁共振波谱仪(NMR)、紫外可见分光光度计(UV-Vis)和荧光分光光度计分别对HPTPP和EPPTPP的化学结构和光学性质进行了表征与测试.结果表明:FTIR谱图中,1 347cm-1和917cm-1处为EPPTPP卟啉环中C N键伸缩振动吸收峰和环氧化物环的(C—OC键)不对称伸缩振动吸收峰.EPPTPP的1 H NMR谱图中,在δ2.94～4.56内5个位移峰峰面积比为1∶1∶1∶1∶1,与EPPTPP中环氧基团的不同氢原子数比完全一致.UV-Vis谱图中,具有与卟啉结构相符合的吸收峰,表明成功合成了EPPTPP.通过荧光光谱分析了HPTPP和EPPTPP的荧光性质,并计算得到了二者的荧光量子产率分别为0.140和0.143.
文摘In the presence of Triton X100,the color reaction of Mercury(Ⅱ)with 2hydroxy5nitrophenyldiazoaminoazobenene(HNPDAAB)was studied.Mercury(Ⅱ)reacts with HNPDAAB and forms a 1∶1 red complex at pH=95-110 buffer solution of Na2B4O7NaOH.The molar absorptivity is 256×105L·mol-1·cm-1.Beer’s law is obeyed in the concentration range of 0～12μg/25mL for Mercury(Ⅱ).The results are in agreement with those determined by the conventional method.This new method was used to determine trace mercury in wastewater.
