Spin switching effect in nickel nitroprusside: Design of a molecular spin device based on spin exchange interaction

摘要

A new approach for designing optically switchable molecular communication devices based on spin-exchange interactions is proposed in the present paper. The device is constituted from two parts, i.e., a paramagnetic block (PMB) and a coupling control block (CCB). AS a prototype of this model, nickel nitroprusside, Ni[Fe(CN)_5NO] . 5.3H_2O was synthesized, in which the nickel ion acts as the PMB and the nitroprusside molecule does as the CCB. In this compound, as there is no spin on Fe, the magnetic interaction between the neighboring NI cations is very weak.