Anthracene-based cylindrical macrotricyclic polyether (1) containing two dibenzo-30-crown-10 cavities has been proved to be an efficient host for the templated complexation with N,N'-dipropyl-1,4,5,8-naphthalenete...Anthracene-based cylindrical macrotricyclic polyether (1) containing two dibenzo-30-crown-10 cavities has been proved to be an efficient host for the templated complexation with N,N'-dipropyl-1,4,5,8-naphthalenetetracarboxylic diimide in the presence of lithium ions in both solution and solid state. Host 1 could also form 1:1 complex with the bispyridinium salt with two β-hydroxyethyl groups in solution and in the solid state. Moreover, it was also found that the switchable complexation processes between the macrotricyclic host and two different kinds of guests could be chemically controlled by the addition and removal of lithium ions.展开更多
A series of isomorphic lanthanide coordination polymers [Ln（Ⅲ）（MBP）2（NO3）2（Br）- 2C3H60] [Ln=Eu, Tb, Er, Yb, and Gd; MBP=N,N＇-methylene-bis（pyridin-4-0ne）] featuring polycatenated sql cationic network and i...A series of isomorphic lanthanide coordination polymers [Ln（Ⅲ）（MBP）2（NO3）2（Br）- 2C3H60] [Ln=Eu, Tb, Er, Yb, and Gd; MBP=N,N＇-methylene-bis（pyridin-4-0ne）] featuring polycatenated sql cationic network and incorporated bromide counter ion were prepared. Their visible and near-infrared （NIR） luminescence properties were characterized by steady-state excitation and emission spectra, as well as luminescence lifetimes and quantum yields. The D2d dodecahedron coordination geometry causes visible light excitations and strongly monochromatic emissions. The external heavy-atom environment induces remarkable en- hancement on the NIR emissions. The sensitization processes are revealed by analyzing the electronic properties of MBP ligand.展开更多
基金supported by the National Natural Science Foundation of China (91127009, 20972162)the National Basic Research Program of China (2011CB932501)
文摘Anthracene-based cylindrical macrotricyclic polyether (1) containing two dibenzo-30-crown-10 cavities has been proved to be an efficient host for the templated complexation with N,N'-dipropyl-1,4,5,8-naphthalenetetracarboxylic diimide in the presence of lithium ions in both solution and solid state. Host 1 could also form 1:1 complex with the bispyridinium salt with two β-hydroxyethyl groups in solution and in the solid state. Moreover, it was also found that the switchable complexation processes between the macrotricyclic host and two different kinds of guests could be chemically controlled by the addition and removal of lithium ions.
基金financially supported by the National Natural Science Foundation of China(21431002,91122007)the Specialized Research Fund for the Doctoral Program of Higher Education(20110211130002)
文摘A series of isomorphic lanthanide coordination polymers [Ln（Ⅲ）（MBP）2（NO3）2（Br）- 2C3H60] [Ln=Eu, Tb, Er, Yb, and Gd; MBP=N,N＇-methylene-bis（pyridin-4-0ne）] featuring polycatenated sql cationic network and incorporated bromide counter ion were prepared. Their visible and near-infrared （NIR） luminescence properties were characterized by steady-state excitation and emission spectra, as well as luminescence lifetimes and quantum yields. The D2d dodecahedron coordination geometry causes visible light excitations and strongly monochromatic emissions. The external heavy-atom environment induces remarkable en- hancement on the NIR emissions. The sensitization processes are revealed by analyzing the electronic properties of MBP ligand.
