Described herein is a straightforward approach to synthesizing three biindenofluorene (BIF) derivatives, composed of antiaromatic indenofluorene units, which are the first non-alternant congeners of known bipentacene. Dimerization of indeno[1,2-b]fluorene and indeno[2,1-c]fluorene units by connecting carbons 3 and 3′ and carbons 2 and 2′, respectively, is shown to influence the highest occupied and lowest unoccupied molecular orbital energy levels of the resulting BIFs, affording band gaps (1.5-1.6 eV) that are smaller than that of a known indenofluorene polymer (2.3 eV). The hole mobilities of BIFs were determined to be ∼10-2 cm2 V-1 s-1
CITATION STYLE
Sharma, H., Ankita, N., Mittal, V., Pandey, U. K., & Das, S. (2024). Syntheses and Properties of Hole-Transporting Biindenofluorenes. Organic Letters, 26(13), 2617–2622. https://doi.org/10.1021/acs.orglett.4c00630
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