Facile synthesis of cofacial porphyrin dimer and trimer using a diarylurea linkageElectronic supplementary information (ESI) available: 1H NMR, electronic absorption, IR and FAB mass spectra and elemental analysis data for 1a, 1b, 2 and 6. See http://www.rsc.org/suppdata/cc/b0/b009578h/
Abstract
Diarylurea-linked zinc porphyrin dimer and trimer were newly prepared: taking advantage of the structural characteristics of the diarylurea skeleton led to a convenient arrangement of the porphyrin chromophores in a cofacial manner.