Artículos de revistas
Optical properties of binuclear zinc (II) macrocyclic complexes derived from 4-methyl-2,6-diformylphenol and 1,2-diaminobenzene
Fecha
2009Registro en:
Polyhedron 28 (2009) 2335–2340
0277-5387
doi:10.1016/j.poly.2009.04.027
Autor
Paredes García, Verónica
Venegas Yazigi, Diego
Cabrera, A.
Valencia Gálvez, P.
Arriagada, M.
Ruiz León, Domingo
Zanocco Loyola, Antonio
Spodine Spiridonova, Evgenia
Institución
Resumen
In this work, we present the synthesis and optical study of the binuclear zinc(II) macrocyclic complexes,
derived from 4-methyl-2,6-diformylphenol and 1,2-diaminobenzene (H2L). Two zinc macrocyclic complexes
with different anions were prepared and characterized: [Zn2LCl2] H2O (1) and [Zn2L](NO3)2 (2).
The complexes are emissive, both in the solid state and in solution at room temperature. Spectroscopic
properties of the macrocyclic complexes were investigated using stationary and time resolved methods
in solutions of dimethylsulfoxide (DMSO), and in solid state. DMSO solutions show two emission bands
centered at 480 and 521 nm for complex (1), and at 527 nm with a shoulder at 480 nm for (2). The emission
spectra of these compounds in solid state show a red shifted band, presenting the maxima at 565 nm
for (1) and 575 nm for (2). The emission lifetimes for these compounds are very short, viz. 650 and 480 ps
for macrocycles (1) and (2), respectively.