Keggin-type [PW12O40]3 − anions as templates lead to an unusual hybrid material.
It is the first two-fold interpenetrating supramolecular Keggin–POMMOF
Helical hole constructed from alternate left- and right-handed chains is formed.
Compound 1 shows fluorescent properties in the solid state at room temperature.
Compound 1 displays good electrocatalytic activity on the reduction of nitrite.