A series of quinoline derivatives was obtained in high yields by an efficient one-pot reaction of substituted o-diiodobenzenes with azazirconacyelopentadienes, which were conveniently prepared from one internal alkyne...A series of quinoline derivatives was obtained in high yields by an efficient one-pot reaction of substituted o-diiodobenzenes with azazirconacyelopentadienes, which were conveniently prepared from one internal alkyne and one nitrile mediated by zirconocene. This proposed synthetic method provides a feasible way to the synthesis of large N-heteroeyclic π-conjugated molecules.展开更多
Two fluorescence-enhanced probes,4-(2,4-dinitrophenoxy)-N-(2-hydroxyethyl)-1,8-naphthalimide(NTE-1)and 4-(2,4-dinitrophenoxy)-N-[4-(2,4-dinitrophenoxy)phenyl]-1,8-naphthalimide(NTE-2),have been designed and synthesize...Two fluorescence-enhanced probes,4-(2,4-dinitrophenoxy)-N-(2-hydroxyethyl)-1,8-naphthalimide(NTE-1)and 4-(2,4-dinitrophenoxy)-N-[4-(2,4-dinitrophenoxy)phenyl]-1,8-naphthalimide(NTE-2),have been designed and synthesized for detection of H2S.4-Hydroxy-1,8-naphthalimide as fluorophore in combination with 2,4-dinitrophenyl ether as H2S response site constructed the fluorescence probes.The consequences showed that both NTE-1 and NTE-2 displayed large red-shift(excess 100nm)in absorption spectra and more than 30-fold fluorescence enhancement in response to H2S.Moreover,the dual site probe,NTE-2,displayed wider linear range between fluorescence intensity and concentration of H2S(0-40μmol/L)compared with single site probe,which can be applied to quantita-tive detection of high concentration of H2S.The photomduced electron transfer(PET)response mechanism of probe was further studied by analyzing the distributions of molecular orbital.Importantly,the probes have potential practical applications in the detection of H2S.展开更多
基金Supported by the National Natural Science Foundation of China（No.21102099）.
文摘A series of quinoline derivatives was obtained in high yields by an efficient one-pot reaction of substituted o-diiodobenzenes with azazirconacyelopentadienes, which were conveniently prepared from one internal alkyne and one nitrile mediated by zirconocene. This proposed synthetic method provides a feasible way to the synthesis of large N-heteroeyclic π-conjugated molecules.
文摘Two fluorescence-enhanced probes,4-(2,4-dinitrophenoxy)-N-(2-hydroxyethyl)-1,8-naphthalimide(NTE-1)and 4-(2,4-dinitrophenoxy)-N-[4-(2,4-dinitrophenoxy)phenyl]-1,8-naphthalimide(NTE-2),have been designed and synthesized for detection of H2S.4-Hydroxy-1,8-naphthalimide as fluorophore in combination with 2,4-dinitrophenyl ether as H2S response site constructed the fluorescence probes.The consequences showed that both NTE-1 and NTE-2 displayed large red-shift(excess 100nm)in absorption spectra and more than 30-fold fluorescence enhancement in response to H2S.Moreover,the dual site probe,NTE-2,displayed wider linear range between fluorescence intensity and concentration of H2S(0-40μmol/L)compared with single site probe,which can be applied to quantita-tive detection of high concentration of H2S.The photomduced electron transfer(PET)response mechanism of probe was further studied by analyzing the distributions of molecular orbital.Importantly,the probes have potential practical applications in the detection of H2S.
