Abstract:
Described herein is an alternative synthetic approach for conjugated indeno[2,1-c]fluorene, including the experimental and theoretical investigations of a tetraradicaloid s-indaceno[2,1-c:6,5-c0
]
difluorene that belongs to the rarely explored indacenodifluorene
family containing 4n + 2 monocyclic conjugated p-electrons. Expedient synthesis, broad absorption reaching 1150 nm, and small
HOMO–LUMO energy gap make [2,1-c:6,5-c0
]s-IDF a promising
candidate for optoelectronic applications.