Based on the theoretical study, we next targeted the synthesis of the four compounds. 1-PXZ-Nap, 2-PXZ-Nap and 1,4-PXZ-Nap-PXZ were each obtained following a Pd-catalysed Buchwald-Hartwig cross-coupling reaction of the relevant mono or di-halogenated naphthalene and phenoxazine in 34%, 56% and 31% yield, respectively (Schemes S3-5). Surprisingly, 2,6-PXZ-Nap-PXZ could not be obtained by this route and thus this target was abandoned at this stage for further investigation.