containing rare earth bridge cluster of rare earth complexes
This thesis work mainly involves two aspects: 1, according to documents prepared by the ligand 4'-(4 - bromophenyl) -2,2 ': 6', 2 "- terpyridine (L1) and 4'-(4- - trimethylsilyl acetylene, benzene) -2,2 ': 6', 2 "- terpyridine (L2). 2, the use of ligands L1, L2, respectively, and the rare earth nitrate, Co2 (CO) 8 by reaction series containing rare earth and cobalt terpyridine conjugated bridge cluster of rare earth complexes.
This article has received 19 new complexes by elemental analysis, IR, NMR and MS spectra were characterized them, and using X-ray diffraction analysis determined the [Nd (L1) (NO3) 3 (CH3O)] and [Ce (L1) (NO3) 3 (CH3O)] crystal structure; also by UV - visible spectroscopy, fluorescence spectroscopy and cyclic voltammetry analysis of the luminescent properties of some complexes and electrochemical properties were studied .
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First, the use of ligands L1, respectively, and Nd (NO3) 3 · xH2O, Yb (NO3) 3-xH2O Eu (NO3) 3 · xH2O, Er (NO3) 3 · xH2O, Tb (NO3) 3 · xH2O, Ce (NO3 ) 3.6 H2O, La (NO3) 3.6 H2O, Sm (NO3) 3 · xH2O and Dy (NO3) 3 · xH2O reaction, and nine rare earth containing terpyridine complexes (1a-1i). 1a and 1f in which the X-ray crystal structure analysis shows the complex in the center of a 10-coordinated rare-earth manner, respectively, and L1, the three nitrate and a methoxy ligand. Fluorescence spectra showed that the ligand containing terpyridine L1 to sensitized Sm3 +, Eu3 +, Tb3 +, Dy3 + luminescence in the visible characteristics, but also to sensitized Nd3 + and Yb3 + ions in the characteristics of near-infrared light.
Secondly, the use of ligand L2, respectively, and Nd (NO3) 3 · xH2O, Yb (NO3) 3 · xH2O, Eu (NO3) 3-xH2O, Er (NO3) 3 · xH2O, Ce (NO3) 3.6 H2O and Tb ( NO3) 3 · xH2O by reaction of 6 with rare earth terpyridine complexes (2a-2f). Fluorescence studies have shown that groups containing terpyridine and alkyne ligands L2 dual function can be sensitized Eu3 +, Tb3 + characteristics of visible light, can also better sensitized Nd3 + and Yb3 + ions in the characteristics of near-infrared light.
Third, the use of ligand L2 and Co2 (CO) 8 by reaction with terpyridine groups tetrahedral cobalt alkyne bridge clusters 3 and tested by cyclic voltammetry of the electrochemical properties of clusters 3.
Finally, the choice of 2a, 2b and 2c, respectively, and Co2 (CO) 8 reaction, assembled out of three with the 3d-4f cluster structure of conjugated-bridged cobalt rare earth complexes (4a-4c), and by fluorescence spectroscopy and cyclic voltammetry analysis of their luminescent properties and electrochemical properties.
