Asymmetrical Heteroatom Substitutions in the Indenofluorene Framework: Synthesis and Characterization of 4,10-Dimesitylbenzo[5,6]-s-indacene[1,2-b]thiophene and 5,11-Dimesitylbenzo[5,6]-s-indacene[1,2-b]thiophene
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This project describes the synthetic method for production of asymmetrical indenofluorenes. The method presented allows for broad yet selective asymmetric substitution on the indenofluorene framework and provides a basis for future asymmetric indenofluorene derivatives. As proof of concept, this project synthesized and characterized 4,10-dimesitylbenzo[5,6]-s-indacene[1,2-b]thiophene and 5,11-dimesitylbenzo[5,6]-s-indacene[1,2-b]thiophene. Asymmetrical indenofluorenes have potential use as n-type organic semiconductors. As such, the structural, optical, and electronic properties of these compounds have also been analyzed and reported. Additionally, this project led to the creation of several compounds hitherto undescribed in the literature.