A novel pyridinium salt, 2,4-bis[p-(N,N-dimethylamino)styryl]-N-methyl pyridinium iodide (BMSPI) was syn-thesized and characterized by TG, 1H NMR spectroscopy and elemental analysis, and the reaction process was studi...A novel pyridinium salt, 2,4-bis[p-(N,N-dimethylamino)styryl]-N-methyl pyridinium iodide (BMSPI) was syn-thesized and characterized by TG, 1H NMR spectroscopy and elemental analysis, and the reaction process was studied by using ES-MS. When BMSPI was pumped by a pulsed 1064 nm, 50 ps laser beam, it manifests highly ef-ficient TPA (Two-Photon Absorption) and up-conversion superradiance. The up-conversion efficiency was 6.0% at the pump energy of 4—6 mJ and the lifetime of two-photon fluorescence was measured as 59 ps.展开更多
The synthesis and characterization of the copper(II) complex [Cu_2(OOCCH=C(CH_3)Fc)_3(phen)_2]ClO_4·2H_2O (1) are reported. The structure of the complex was determined by single-crystal X-ray analysis. The comp...The synthesis and characterization of the copper(II) complex [Cu_2(OOCCH=C(CH_3)Fc)_3(phen)_2]ClO_4·2H_2O (1) are reported. The structure of the complex was determined by single-crystal X-ray analysis. The compound crystallizes in the monoclinic system,space group Pc ,with Z =2,a =1.2799(4) nm,b =0.9969(4) nm,c =2.5228 nm,and β =91.576(1)°. The cationic part of 1 indicates a penametallic core in which three 3-ferrocenyl-2-crotonic acid salt (FCA) groups act as (O,O') bridging ligands between two copper(II) ions with a square-pyramidal environment. Cyclic voltammetric experiments in acetonitrile have been performed mainly to examine the Fe(II) → Fe(III) one-electron oxidation in FCA and its complex. The variable-temperature magnetic susceptibility measurements revealed very weak intramolecular anti-ferromagnetic coupling. Fitting parameters are 2 J =-0.2 cm -1 ,g =2.114,and θ =0 K.展开更多
文摘A novel pyridinium salt, 2,4-bis[p-(N,N-dimethylamino)styryl]-N-methyl pyridinium iodide (BMSPI) was syn-thesized and characterized by TG, 1H NMR spectroscopy and elemental analysis, and the reaction process was studied by using ES-MS. When BMSPI was pumped by a pulsed 1064 nm, 50 ps laser beam, it manifests highly ef-ficient TPA (Two-Photon Absorption) and up-conversion superradiance. The up-conversion efficiency was 6.0% at the pump energy of 4—6 mJ and the lifetime of two-photon fluorescence was measured as 59 ps.
文摘The synthesis and characterization of the copper(II) complex [Cu_2(OOCCH=C(CH_3)Fc)_3(phen)_2]ClO_4·2H_2O (1) are reported. The structure of the complex was determined by single-crystal X-ray analysis. The compound crystallizes in the monoclinic system,space group Pc ,with Z =2,a =1.2799(4) nm,b =0.9969(4) nm,c =2.5228 nm,and β =91.576(1)°. The cationic part of 1 indicates a penametallic core in which three 3-ferrocenyl-2-crotonic acid salt (FCA) groups act as (O,O') bridging ligands between two copper(II) ions with a square-pyramidal environment. Cyclic voltammetric experiments in acetonitrile have been performed mainly to examine the Fe(II) → Fe(III) one-electron oxidation in FCA and its complex. The variable-temperature magnetic susceptibility measurements revealed very weak intramolecular anti-ferromagnetic coupling. Fitting parameters are 2 J =-0.2 cm -1 ,g =2.114,and θ =0 K.
