Abstract
The ferroelectric behaviour of an octahedral cage [[Ni
(H
O)
(TPTA)
]·(NO
)
·36H
O] (1) exhibiting high remnant polarization of 25.31 μC cm
is discovered. For the first time, clear domain structures and the characteristic electromechanical responses are demonstrated using piezoresponsive force microscopy for a thin film of 1. Owing to its mechanical energy conversion capability, polymer composites of 1 were employed as efficient piezoelectric nanogenerators.