Synthesis and properties of TSF-based spin-polarized donor
2009; Elsevier BV; Volume: 28; Issue: 9-10 Linguagem: Inglês
10.1016/j.poly.2008.12.005
ISSN1873-3719
AutoresH. Komatsu, Ryoji Mogi, Michio M. Matsushita, Tadashi Miyagi, Yuzo Kawada, Tadashi Sugawara,
Tópico(s)Magnetism in coordination complexes
ResumoAbstract A novel organic donor radical, TSBN, which is a benzotetraselenafulvalene derivative carrying a nitronyl nitroxide group in a cross-conjugated manner was prepared. X-ray crystallographic analysis revealed that TSBN forms a sheet-like network within the ac plane through intermolecular chalcogen contacts. Its spin-polarized structure was confirmed by cyclic voltammogram, ESR spectra of singly oxidized species and DFT calculation. The neutral crystal of TSBN showed nonlinear I–V characteristics at 2 K and exhibited negative magnetoresistance (−5% at 2 K under 5 T).
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