A novel series of iridium complexes with alkenylquinoline ligands: Theoretical study on electronic structure and spectroscopic property

Influence of hybrid organic–inorganic sol–gel matrices on the photophysics of amino-functionalized UV-sensitizers

“…This is possible by the formation of coordinating bonds between the free pair of electrons located on the nitrogen atom and the d free-orbitals of the metal, in a similar way to the formation of metal-ligand complexes [21]. The physical consequence of this chemical reaction is known as the ''Metal Ligand Charge Transfer'' (MLCT) process [22], in which the electronic transition from the dp (Zr) to the p* (PI) orbitals is facilitated by electron transfer from the transition metal towards the ligand. This process can support the absence of matrix effects on the I-184 and the red shift of the initial bands of the pure DB and I-369, but does not explain the appearance of the band around 459 nm in the case of DB only.…”

Unsymmetric Ir(iii) phosphorescent complexes with both 2-phenylpyridine(ppy)- and 2-vinylpyridine(vpy)-type ligands bearing functional groups and their optoelectronic properties

“…Different from the traditional ppy-type Ir(III) complexes in which the Ir(III) centers coordinate with aromatic sp 2 carbon atoms, some phosphorescent Ir(III) complexes have been constructed using two 2vinylpyridine (vpy)-type ligands. [25][26][27] Unfortunately, vpy-type phosphorescent Ir(III) complexes have been rarely reported. Recently, we have prepared functional vpy-type ligands for the synthesis of new functional Pt II (vpy)acac-type phosphorescent complexes with attractive EL results.…”