Spirobifluorene (SBF) is one of the most commonly utilized scaffolds in the construction of Organic Semi-Conductors (OSCs) for organic electronics. In the last ten years, new generations of SBF positional isomers have been surfaced in the literature. The various substitution places have enabled the tailoring of important electrical properties for the future construction of materials. These new generations of organic semiconductors have shown great promise to the field of electronics, particularly when utilized as a host material for Thermally Activated Delayed Fluorescence OLEDs. We present...