What are the observed photophysical properties of the porphyrin–azoheteroarene hybrids compared to their precursor porphyrins?

Label:chem

Topic
A study compares the photophysical properties of the synthesized porphyrin–azoheteroarene hybrids with their precursor porphyrins to evaluate the impact of the azoheteroarene modifications.
Answer
The porphyrin–azoheteroarene hybrids exhibit higher fluorescence emission intensities, more significant Stokes shifts, and smaller optical band gaps compared to their precursor porphyrins. For example, the fluorescence quantum yield of hybrid 4 (0.23) and hybrid 7 (0.18) were significantly higher than their precursor porphyrin 1 (0.093).
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