Abstract
Stable and nonaromatic phenothiazinophyrins which resulted from the replacement of one of the pyrrole rings of porphyrin with a phenothiazine unit were synthesized by condensing phenothiazine based tripyrrane with aryl aldehyde and pyrrole under acid catalysed conditions. NMR studies revealed that the pyrrole ring that is across the phenothiazine unit is inverted and DFT studies also supported that the pyrrole ring inverted phenothiazinophyrins were more stable. Phenothiazinophyrins and their protonated derivatives showed panchromatic absorption features and absorbed in the visible to NIR region.
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