Supramolecular Complexation between Porphyrin-Viologen Dyad and Cucurbit[7]uril

What is it about?

We synthesized a porphyrin-viologen dyad, and its supramolecular complexation with cucurbit[7]uril (CB[7]) which were characterized by 1HNMR spectroscopy and ESI mass spectrometry. We found that the fluorescence of dyad was quenched by the supramolecular complexation accompanying with shifts to shorter wavelengths. Investigation of the electrochemical behavior with the photophysical properties of this complexation suggest a possibility of design of advanced solar energy conversion system.

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Why is it important?

This work is provides a basic understanding of the design of more advanced systems to develop solar energy conversion by supramolecular complexation on photoelectronically active molecules.