A new spiropyran derivative was synthesized and first utilized in a polymericfilm-based optical sensor for zinc ion. Spiropyrans, combining the characteristics of metal bindingand signal transduction, show potential f...A new spiropyran derivative was synthesized and first utilized in a polymericfilm-based optical sensor for zinc ion. Spiropyrans, combining the characteristics of metal bindingand signal transduction, show potential function in the design of optical chemical sensors(optodes) toward metal ions. When embedded in a plasticized poly (vinyl chloride) (PVC) membrane,the newly synthesized spiropyran derivative 1 exhibits obvious fluorescence enhancement at 630 nm inthe presence of zinc ion in aqueous solution. With the optimum condition described, the optodemembrane responds to zinc ion over a dynamic range of 4.94x10^(-7) to 4.15x10^(-4)mol·L^(-1), witha detection limit of 1.51x10^(-7) mol·L^(-1). The membrane not only displays excellentphotostability, reproducibility and reversibility, but also exhibits high selectivity toward zincion over transition metal ions including Hg^(2+), Cd^(2+), Pb^(2+), Cu^(2+), Fe^(3+) and commoncationic ions presented in the physiological fluids.展开更多
ENDOHEDRAL metallofullerencs is the important part of modern fullerene science research.From the first determination of La@C<sub>2n</sub>, in laser mass spectrometry till now, great progresshas been made i...ENDOHEDRAL metallofullerencs is the important part of modern fullerene science research.From the first determination of La@C<sub>2n</sub>, in laser mass spectrometry till now, great progresshas been made in this field. Varieties of endohedral metallofullerenes have been synthesizedby using arc evaporation method. The subsequent purification, characterization and derivatiza-展开更多
基金Financial supports from the National Natural Science Foundation of China (Grant No. 20475005) the National Outstanding Youth Foundation of China (Grant No. 20525518) are gratefully acknowledged.
文摘A new spiropyran derivative was synthesized and first utilized in a polymericfilm-based optical sensor for zinc ion. Spiropyrans, combining the characteristics of metal bindingand signal transduction, show potential function in the design of optical chemical sensors(optodes) toward metal ions. When embedded in a plasticized poly (vinyl chloride) (PVC) membrane,the newly synthesized spiropyran derivative 1 exhibits obvious fluorescence enhancement at 630 nm inthe presence of zinc ion in aqueous solution. With the optimum condition described, the optodemembrane responds to zinc ion over a dynamic range of 4.94x10^(-7) to 4.15x10^(-4)mol·L^(-1), witha detection limit of 1.51x10^(-7) mol·L^(-1). The membrane not only displays excellentphotostability, reproducibility and reversibility, but also exhibits high selectivity toward zincion over transition metal ions including Hg^(2+), Cd^(2+), Pb^(2+), Cu^(2+), Fe^(3+) and commoncationic ions presented in the physiological fluids.
文摘ENDOHEDRAL metallofullerencs is the important part of modern fullerene science research.From the first determination of La@C<sub>2n</sub>, in laser mass spectrometry till now, great progresshas been made in this field. Varieties of endohedral metallofullerenes have been synthesizedby using arc evaporation method. The subsequent purification, characterization and derivatiza-
