Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1323989 | Journal of Organometallic Chemistry | 2006 | 6 Pages |
This work reported the investigation of the structural distortions and charge-transfer processes that occurred in the complex of cuprous(I) bis-2,9-dimethyl-1,10-phenanthroline (Cu(dmp)2+) upon oxidation to copper(II), Cu(dmp)22+, through a excited state of Cu(dmp)2+ by density functional theory. The intramolecular electronic transfer from central metal-to-ligand (MLCT) upon the irradiation of light energy is confirmed. Due to this MLCT excitation, the structure of the excited state of Cu(dmp)2+ is distorted and reorganized to adapt with the change of charge in central metal. As a result, the excited state of Cu(dmp)2+ is formed, which has the similar electronic and structural properties with Cu(dmp)22+. The bulky substituents in 2- and 9-positions of the phenanthroline ligands can restrain the structural distort and decrease nonradiative decay rate. Thus, the electronic and steric effects of the ligands in the cuprous photo-sensitive complexes have important consequences in the behavior of their excited state.
Graphical abstractThe structural distortions and charge transfer processes that occurred in the complex of cuprous(I) bis-2,9-dimethyl-1,10-phenanthroline (Cu(dmp)2+) upon oxidation to copper(II), Cu(dmp)22+, through a excited state of Cu(dmp)2+ were investigated by density functional theory. The intramolecular electrons transfer from central metal-to-ligand (MLCT) upon the irradiation of light energy. The bulky substituents in 2- and 9-positions of the phenanthroline ligands can restrain the structural distort and decrease nonradiative decay rate.Figure optionsDownload full-size imageDownload as PowerPoint slide