A New Chiral Schiff Base with Ferroelectric Property

• 来源期刊: 中国化学（英文版）
• 年，卷（期）: 2008,（11）
• 页码范围: 1959-1962
• 页数: 4页
• 语种: 英文

摘要

Reaction of 1,1,1,5,5,5-hexafluoropentane-2,4-dione with(1S,2S)-(-)-1,2-diaminocyclohexane afforded a homochiral Schiff base(1Z,4Z)-2,4-bis(trifluoromethyl)-5a,6,7,8,9,9a-hexahydro-3H-benzo[b]1,4]diazepine(1).Fluorescent analysis showed that it exhibited an intense emission band at 488 nm when the exciting radiation was set at 437 nm.Crystallographic analysis shows that it belongs to chiral space group C2 with ferroelectric behavior.A typical ferroelectric feature of electric hysteresis loop was obtained,with remanent polarization(Pr)of ca.0.01 μC/cm2 and coercive field(Ec)of 0.27 kV/cm.