An orthogonal C–H borylation – cross-coupling strategy for the preparation of tetrasubstituted “A2B2”-chrysene derivatives with tuneable photophysical properties

摘要

The regioselective, orthogonal functionalisation of 4,10-dichlorochrysene enables the synthesis of a variety of 2,8,4,10-''A(2)B(2)''-tetrasubstituted chrysenes. Such compounds exhibit broadened UV-vis absorption spectra, decreased band gap and higher HOMO levels compared to the parent chrysene.