A novel and simple fluorescent molecular sensor,1-pyrenecarboxaldehyde thiosemicarbazone（Hpytsc）,was synthesized.Its higher sensitivity and selectivity to mercury（Ⅱ） ion were studied through absorption and emissi...A novel and simple fluorescent molecular sensor,1-pyrenecarboxaldehyde thiosemicarbazone（Hpytsc）,was synthesized.Its higher sensitivity and selectivity to mercury（Ⅱ） ion were studied through absorption and emission channels.The UV-vis spectra show that the increasing mercury（Ⅱ） ion concentrations result in the decreasing absorption intensity.The fluorescence monomer emission of Hpytsc is enhanced upon binding mercury（Ⅱ） ion,which should be due to the 1：1 complex formation between Hpytsc and metal ion.展开更多
An efficient and simple method for synthesis of new hyodeoxycholic acid thiosemicarbazone derivatives under solvent-free conditions using microwave has been developed.Its main advantages are short reaction times,good ...An efficient and simple method for synthesis of new hyodeoxycholic acid thiosemicarbazone derivatives under solvent-free conditions using microwave has been developed.Its main advantages are short reaction times,good conversions and the environmentally friendly nature of the process.The preliminary results indicate that some of these compounds possess inhibitory effects against E.coli.展开更多
A new Schiff base ligand 4-[1-（toluene-4-sulfony1）-indol-3-y1]-3-but-en-2-one thiosemicarbazone（HL）and its four transition metal complexes(（ML2,M=Cu（Ⅱ）,Ni（Ⅱ）,Zn（Ⅱ） and Co（Ⅱ）） have been prepared and c...A new Schiff base ligand 4-[1-（toluene-4-sulfony1）-indol-3-y1]-3-but-en-2-one thiosemicarbazone（HL）and its four transition metal complexes(（ML2,M=Cu（Ⅱ）,Ni（Ⅱ）,Zn（Ⅱ） and Co（Ⅱ）） have been prepared and characterized by means of elemental analyses,molar conductivity and IR,In vitro antitumor activity of the ligand and the complexes was studied by using MTT method,Their antibacterial activity was studied using the filter scraps diffusion method.展开更多
Metal (Me=Fe(III), Mo(VI), Mn(II), Co(II), Ni(II), Zn(II) and Cu(II)) 2-hydroxy-1-naphthaldehyde thiosemicarbazone complexes (MeHNT) were synthesized and used as mimic-enzyme catalysts to mimic the active group of hor...Metal (Me=Fe(III), Mo(VI), Mn(II), Co(II), Ni(II), Zn(II) and Cu(II)) 2-hydroxy-1-naphthaldehyde thiosemicarbazone complexes (MeHNT) were synthesized and used as mimic-enzyme catalysts to mimic the active group of horseradish peroxidase (HRP). The results showed that Fe-HNT, Mo-HNT are effective catalysts, which have similar catalytic activity as HRP. The sequence of catalytic activities of tested biomimic peroxidas is Mo-HNT > Fe-HNT > Zn-HNT > Ni-HNT > Mn-HNT. Among them, Fe-HNT is used as a mimic-enzyme catalyst in determination of ascorbic acid and glucose by coupling the catalytic reaction of glucose oxidase.展开更多
基金financed by the Graduate Innovation Foundation of Logistic Engineering University(Chongqing, China)
文摘A novel and simple fluorescent molecular sensor,1-pyrenecarboxaldehyde thiosemicarbazone（Hpytsc）,was synthesized.Its higher sensitivity and selectivity to mercury（Ⅱ） ion were studied through absorption and emission channels.The UV-vis spectra show that the increasing mercury（Ⅱ） ion concentrations result in the decreasing absorption intensity.The fluorescence monomer emission of Hpytsc is enhanced upon binding mercury（Ⅱ） ion,which should be due to the 1：1 complex formation between Hpytsc and metal ion.
基金the Natural Science Foundation of the State Ethnic Affairs Commission of China(No.09XN08) for the financial support
文摘An efficient and simple method for synthesis of new hyodeoxycholic acid thiosemicarbazone derivatives under solvent-free conditions using microwave has been developed.Its main advantages are short reaction times,good conversions and the environmentally friendly nature of the process.The preliminary results indicate that some of these compounds possess inhibitory effects against E.coli.
文摘A new Schiff base ligand 4-[1-（toluene-4-sulfony1）-indol-3-y1]-3-but-en-2-one thiosemicarbazone（HL）and its four transition metal complexes(（ML2,M=Cu（Ⅱ）,Ni（Ⅱ）,Zn（Ⅱ） and Co（Ⅱ）） have been prepared and characterized by means of elemental analyses,molar conductivity and IR,In vitro antitumor activity of the ligand and the complexes was studied by using MTT method,Their antibacterial activity was studied using the filter scraps diffusion method.
文摘Metal (Me=Fe(III), Mo(VI), Mn(II), Co(II), Ni(II), Zn(II) and Cu(II)) 2-hydroxy-1-naphthaldehyde thiosemicarbazone complexes (MeHNT) were synthesized and used as mimic-enzyme catalysts to mimic the active group of horseradish peroxidase (HRP). The results showed that Fe-HNT, Mo-HNT are effective catalysts, which have similar catalytic activity as HRP. The sequence of catalytic activities of tested biomimic peroxidas is Mo-HNT > Fe-HNT > Zn-HNT > Ni-HNT > Mn-HNT. Among them, Fe-HNT is used as a mimic-enzyme catalyst in determination of ascorbic acid and glucose by coupling the catalytic reaction of glucose oxidase.
