Synthesis and Magnetic Properties of LC Compounds with More Radical Moieties

Abstract

Rod-like nitroxide radical (NR) compounds show abrupt increase in magnetic susceptibilities at their transitions from crystalline phases to liquid crystalline or liquid phases (magneto-LC effects). [1] However, the origin of magneto-LC effects has not yet been clear. Naturally, the increase of the number of radical moiety is expected to induce the increase of the magneto-LC effects. In fact, an all-organic biradical LC compound has recently been reported to show strong magneto-LC effects.[2] Here, we report the synthesis and the magnetic properties of two novel all-organic biradical LC compounds.