A supramolecular photoswitch constructed by intermolecular hydrogen bond between BTEPy and TTF-COOH

A novel supramolecular photoswitch containing bisthienylethene-pyridine (BTEPy) and carboxyl attached tetrathiafluvalene (TTF-COOH) through intermolecular hydrogen bond was obtained. The formation of the intermolecular hydrogen bond was verified by FT-IR, XPS, 1H NMR and theoretical calculation. Electrochemical properties were investigated both experimentally and theoretically. And a molecular switch with UV/vis light as the inputs and the electrochemical signal as the outputs was achieved.