Ligation of Bipyridyl Ligands to Metal 8-Hydroxyquinolinates - Synthesis, Crystal Structures, and TDDFT Study

Authors：Yue Fan; Zhu Ai Xin; Zheng Shao Liang^*; Chen Xiao Ming

Source：European Journal of Inorganic Chemistry, 2008, (32): 5076-5081.

DOI：10.1002/ejic.200800507

• Bipyridyl ligands
• Metal 8-hydroxyquinolinates
• Interfaces
• TDDFT
• X-ray diffraction

Binding of four bipyridyl ligands, 2,2'-bipyridine (L1), 1,10-phenanthroline (L2), 1,4,8,9-tetraazatriphenylene (L3), and dipyrido[3,2-a:2',3'-c]phenazine (L4) with Cdq(2)/Znq(2) complexes (q = 8-hydroxyquinoline) gave four neutral, mononuclear Cd(II)/Zn(II) complexes, namely [Cdq(2)L(1)]center dot H(2)O center dot CH(3)OH (1), [Cdq(2)L3]center dot 3H(2)O (2), [Cdq(2)L4]center dot 2H(2)O (3), and [Znq(2)L4]center dot 2CH(3)OH (4). These mixed-ligand compounds were taken as models for investigating the interfacial effect at the electron-transfer layer/light-emitting layer junction in OLEDs by combination of X-ray diffraction, fluorophotometric titration, cyclic voltammetry, and time-dependent density functional theory (TDDFT) calculations. The results shows the formation of these compounds is favorable to energy transition on the contact surface.

• Institution
  新疆大学; 中山大学