Panchromatic absorbers challenge our understanding of chromophore photophysics and may prove potent for solar light-harvesting in artificial photosynthesis. Previously reported porphyrin–chromophore arrays exhibit panchromaticity to some extent. Phthalocyanines, compared to porphyrins, have more intense absorption in the red region and higher fluorescence quantum yields. To explore the panchromatic behavior of phthalocyanines, four target phthalocyanine–chromophore dyads have been constructed from a mono-ethynyl phthalocyanine and the following halogenated building blocks: (1) porphyrin, (2) chlorin, (3) boron-dipyrrin and (4) perylene-monoimide. Primary static absorption and emission spectra of the dyads have been measured to establish baseline photophysical properties.

Phthalocyanine–chromophore dyads: Synthesis and photophysical studies

253rd National Meeting (2017)

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