The activation of dinitrogen by a titanium hydride complex with two bridging hydrides located between metal Ti and Li was investigated.Exposing cyclic bis-alkylidene titanium complex 1 to H2 in THF solution yielded ti...The activation of dinitrogen by a titanium hydride complex with two bridging hydrides located between metal Ti and Li was investigated.Exposing cyclic bis-alkylidene titanium complex 1 to H2 in THF solution yielded titanium hydride 2,{[(2-butene)(C_(5)H_(5))Ti](μ-H)_(2)Li(THF)_(3)}.2 aggregated into dimer 3 in hexane,accompanied by the release of LiH.展开更多
Photoresponsive behavior and self assembly properties of three side chain azo polyelectrolytes, poly (2 (4 phenylazophenoxy) ethanol co acrylic acid) (PPAPE), poly (2 (4 (4′ nitrophenylazo) phenoxy) ethanol...Photoresponsive behavior and self assembly properties of three side chain azo polyelectrolytes, poly (2 (4 phenylazophenoxy) ethanol co acrylic acid) (PPAPE), poly (2 (4 (4′ nitrophenylazo) phenoxy) ethanol co acrylic acid) (PNAPE), and poly (2 (4 (4′ ethoxyphenylazo) phenoxy) ethanol co acrylic acid) (PEAPE), were studied. These polyelectrolytes with different degrees of functionalization of azo chromophores were fabricated into nano composite multilayers using two types of dipping solutions through a layer by layer electrostatic self assembling process. Results show that the ratio between tetrahydrofuran (THF) and H 2O significantly influences the photoresponsive behavior of PNAPE in THF H 2O mixture. The THF H 2O dipping solution, used in this work for self assembly of hydrophobic polyelectrolytes, is proved to be as applicable as aqueous dipping solution for normal self assembly of hydrophobic polyelectrolytes. However, significant differences in the multilayer growth between the two systems were also observed, which resulted from the remarkable difference of the existing forms of the polyelectrolytes in these two dipping solutions.展开更多
基金supported by the National Natural Science Foundation of China(No.21988101 and 22201013)the Beijing Natural Science Foundation(No.2222008).
文摘The activation of dinitrogen by a titanium hydride complex with two bridging hydrides located between metal Ti and Li was investigated.Exposing cyclic bis-alkylidene titanium complex 1 to H2 in THF solution yielded titanium hydride 2,{[(2-butene)(C_(5)H_(5))Ti](μ-H)_(2)Li(THF)_(3)}.2 aggregated into dimer 3 in hexane,accompanied by the release of LiH.
基金the National Natural Science Foundationof China(No.5 992 5 30 9)
文摘Photoresponsive behavior and self assembly properties of three side chain azo polyelectrolytes, poly (2 (4 phenylazophenoxy) ethanol co acrylic acid) (PPAPE), poly (2 (4 (4′ nitrophenylazo) phenoxy) ethanol co acrylic acid) (PNAPE), and poly (2 (4 (4′ ethoxyphenylazo) phenoxy) ethanol co acrylic acid) (PEAPE), were studied. These polyelectrolytes with different degrees of functionalization of azo chromophores were fabricated into nano composite multilayers using two types of dipping solutions through a layer by layer electrostatic self assembling process. Results show that the ratio between tetrahydrofuran (THF) and H 2O significantly influences the photoresponsive behavior of PNAPE in THF H 2O mixture. The THF H 2O dipping solution, used in this work for self assembly of hydrophobic polyelectrolytes, is proved to be as applicable as aqueous dipping solution for normal self assembly of hydrophobic polyelectrolytes. However, significant differences in the multilayer growth between the two systems were also observed, which resulted from the remarkable difference of the existing forms of the polyelectrolytes in these two dipping solutions.
