Characteristic Low-energy Metal-to-Ligand Charge-Transfer Behaviors of The Ruthenium Bis(bipyridine) meso-aryl-dipyrrin Complexes

• Main Authors: Pei-Shang Chao, 趙沛軒
• Other Authors: Yuan-Jang Chen
• Format: Others
• Language: zh-TW
• Published: 2011
• Online Access: http://ndltd.ncl.edu.tw/handle/94816212076615141346

碩士 === 輔仁大學 === 化學系 === 99 === In this study, we synthesis and characterize a series of [Ru(bpy)2 (5-aryl-dipn)]+ complexes，where aryl = ph, py and ph-NO2. We try to realize the fundamentals properties of these series 5-aryl-dipyrrin and find the MLCT absorption of the ruthenium charge transfer to dipyrrin. The 13C NMR spectra, result of computing and UV-vis absorption curves in low energy MLCT region for the series complexes suggest the low relationship between π* system of dipyrrin and aryl moieties. By computing results, the transition of absorption between 16500cm-1~ 18500cm-1 are ruthenium-dπ to bpy-π* and to dipyrrin-π* orbital; the relative intense absorption curve ranging between 18500cm-1~ 21000cm-1 is the MLCT of ruthenium-dπ to bpy-π* 　　In summary, aryl bonding dipyrrin bridge should not be the efficiency system for mediating the electron-transfer Donor/Acceptor system.