Trinitroxide-Trioxytriphenylamine: Spin-State Conversion from Triradical Doublet to Diradical Cation Triplet by Oxidative Modulation of a π-Conjugated System

摘要

Organic-based open-shell molecules are promising components for next-generation electronic devices because of their wide diversity in molecular design, structural flexibility, and processability. Continuous research in this field has led to interesting findings on the use of these species as spin sources and/or redox-active species: for example, molecule-based magnets, electrical conductors, radical-based batteries, spintronics devices, and molecular spin-based quantum computers. In these studies, control of the ferromagnetic or antiferromagnetic couplings between spin sources plays an important role in their unique magnetic properties. Electron-donor molecules substituted with stable neutral radical species have frequently been used to construct high-spin molecules. Selective oxidation of the electron-donor moieties of these molecules gives radical-substituted radical cation species, as demonstrated in the design of magnetic-field-responsive charge transport and ferrimagnets.