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Full-Text Articles in Physical Sciences and Mathematics
On The Nature Of Excited States In Ruthenium Complexes: Towards Renewable Energy, Ryan A. Thomas
On The Nature Of Excited States In Ruthenium Complexes: Towards Renewable Energy, Ryan A. Thomas
Wayne State University Dissertations
The 77 K radiative properties (spectra, quantum yields and lifetimes) of ruthenium-polypyridyl complexes are investigated to better understand the effects of electronic mixing on metal-to-ligand-charge-transfer (3MLCT) excited state properties and how metal-centered (3MC) excited states affect the properties of potential ruthenium photosensitizers.The radiative rate of relaxation (kRAD) determines the maximum possible excited state lifetime when all other relaxation pathways are blocked (kn = 0 for all n RAD). Thus, the excited state will relax only by means of an emission characteristic of the polypyridyl chromophore. kRAD is expected to increase as the excited state energy increases while the value …
Synthesis Of Cryptands For Eu2+-Containing Complexes, Chengcheng Wang
Synthesis Of Cryptands For Eu2+-Containing Complexes, Chengcheng Wang
Wayne State University Theses
Eu2+-containing complexes have considerable applications in synthetic chemistry, medical diagnosis, and materials science. However, Eu2+ is easily oxidized in solution when exposed to air. Allen and coworkers have demonstrated that Eu2+ can be stabilized by functionalized cryptands. Based on this idea, I focused my research on synthesizing cryptands. The progress towards synthesizing several modified cryptands is described in the thesis. The Eu2+-containing complexes of these cryptates have potential applications as magnetic resonance imaging contrast agents, luminescent materials, and magnetic materials.