Electrochemical Properties and Electronic Energy Level of Phosphorescent Complexes (L)Re(CO)3Cl(L=α,α-diamine)

Abstract

Abstract: The electrochemical properties, the energy level and the band gap of a series of phosphorescent Re(I) complexes, (L)Re(CO)₃Cl(L=α,α-diamine) were studied by using cyclic voltammetry(CV) together with the UV-Vis absorption spectra, photoluminescence spectra and the self-consistent B3LYP quantum chemical calculation methods. Based on the results, the energy level of (L)Re(CO)₃Cl were obtained and the influencing rule of ligands was also drawn. (L)Re(CO)₃Cl complexes have a single oxidation peak and many reduction peaks. These peaks reflect the HOMO and LUMO energy level of (L)Re(CO)₃Cl complexes, which were made up of Re—Cl hybrid orbital and π^* orbital of diamine ligands, respectively. Compared with the results from the spectra, the band gap results of (L)Re(CO)₃Cl complexes calculated from CV mainly correspond to the triplet energy level.

Key words: Re complex, Cyclic voltammetry, Electronic structure, Phosphorescence

CLC Number:

O614

TrendMD:

LI Mao, ZHANG Ming, ZENG Ming, ZHANG Wu, YANG Bing, MA Yu-Guang, LI Ye-Zhi, YANG Li, FENG Ji-Kang. Electrochemical Properties and Electronic Energy Level of Phosphorescent Complexes (L)Re(CO)₃Cl(L=α,α-diamine)[J]. Chem. J. Chinese Universities, 2005, 26(2): 317.

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Electrochemical Properties and Electronic Energy Level of Phosphorescent Complexes (L)Re(CO)₃Cl(L=α,α-diamine)

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