| 초록 |
Herein, we report on the synthesis, photophysical/electrochemical properties, and excited-state properties of a series of heteroleptic Ir(III) complexes ([Ir(C^N)2(N^NAryl)]+, IrP-Ph) possessing aryl-extended bipyridyl moiety (C^N = (2-pyridyl)benzo[b]thiophen-3-yl (btp); N^NAryl = 4,4′-Y2-bpy (Y = –PhSi(Ph)3) with those of non-extended case for comparison. Their photosensitizing abilities were tested in a homogeneous condition (IrP + ReP) and a mixed heterogeneous photocatalytic system consisting of Ir(III) photosensitizer and Re(I) catalyst (ReP)-immobilized TiO2 catalytic particles (IrP + TiO2/Re(I)), where ReP is fac-[Re(4,4′-Y2-bpy)(CO)3Cl] (Y = CH2PO(OH)2), and the electron donor (ED) is 1,3-dimethyl-2-phenyl-1,3-dihydrobenzimidazole (BIH). Scheme 1 describes the chemical structures of new phenyl-substituted Ir(III) photosensitizer (IrP-Ph) and key components for photolysis with its overall photolysis processes. |
