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Full-Text Articles in Physical Sciences and Mathematics
The Synthesis And Characterization Of Photoluminescent Conjugated Frameworks Containing Silicon And Germanium, Douglas William Hammerstroem
The Synthesis And Characterization Of Photoluminescent Conjugated Frameworks Containing Silicon And Germanium, Douglas William Hammerstroem
Dissertations
Siloles and 9-heterofluorenes (Si, Ge) are conjugated π-electron systems containing Group 14 atoms which demonstrate unique properties such as high electron affinity, mobility, and bathochromically shifted optical spectra relative to their all-carbon analogs. This is due to their low-lying lowest-unoccupied molecular orbital (LUMO) which is resultant of the σ*-π* conjugation between the exocyclic groups at the Group 14 center and the butadiene unit of the ring. As a consequence, they have received considerable attention for their use as components for a wide variety of optical and electronic applications such as organic light emitting diodes (OLEDs), photovoltaic devices, field-effect transistors (FETs), …
A New 2,1,3-Benzothiadiazole-Fused N-Heterocyclic Carbene And Its Metal Complexes, Ossie J. Buckner
A New 2,1,3-Benzothiadiazole-Fused N-Heterocyclic Carbene And Its Metal Complexes, Ossie J. Buckner
Master of Science in Chemical Sciences Theses
In the last few decades, N-heterocyclic carbenes (NHCs) have emerged as a powerful class of carbon-based ligands. Owing to their unique electronic and steric properties, they have been incorporated in a large variety of catalytically active metal complexes. One of the strategies that have been used to modify the ligand properties of NHCs is annulation with different carbo- and heterocyclic groups. It has been shown that annulation in the 4-5 position of the imidazole ring significantly influences the stability and the σ-donor/π- acceptor properties of the carbene species, and this may be used as a versatile tool for the fine-tuning …