A New Chiral Quinoxaline Derivative with Ferroelectric Property

• Published in: Chinese journal of chemistry Vol. 28; no. 10; pp. 1799 - 1802
• Main Authors: Chen, Lizhuang, Han, Guangfan, Ye, Hengyun, Xiong, Rengen
• Format: Journal Article
• Language: English
• Published: Weinheim WILEY-VCH Verlag 01.10.2010; WILEY‐VCH Verlag; Wiley; Wiley Subscription Services, Inc
• Subjects: Chemistry; Chemistry, Multidisciplinary; Crystallography; Dielectric constant; Emission analysis; Ethane; ferroelectric; Ferroelectric materials; Ferroelectricity; Fluorescence; homochiral; Hysteresis loops; permittivity; Physical Sciences; Quinoxaline; quinoxaline derivative; Quinoxalines; Room temperature; Science & Technology; ferroelectric; permittivity; POLYMERS; homochiral; fluorescence; quinoxaline derivative
• ISSN: 1001-604X; 1614-7065
• DOI: 10.1002/cjoc.201090302

Reaction of 1,2‐di(thiophen‐2‐yl)ethane‐1,2‐dione and (1R,2R)‐(−)‐diaminocyclohexane afforded a homochiral quinoxaline derivative (4aR,8aR)‐2,3‐di(thiophen‐2‐yl)‐decahydroquinoxaline (1). Fluorescent analysis exhibits an intense blue emission band at 386 nm. Crystallographic analysis showed that it belongs to chiral space group P21 with ferroelectric behavior, and a typical ferroelectric feature of electric hysteresis loop was obtained. The dielectric constant of compound 1 was measured at room temperature. Reaction of 1,2‐di(thiophen‐2‐yl)‐ ethane‐1,2‐dione and (1R,2R)‐(−)‐diaminocyclohexane afforded a homochiral quinoxaline derivative (4aR,8aR)‐2,3‐di(thiophen‐2‐yl)‐decahydroquinoxaline (1). Crystallographic analysis showed it belongs to chiral space group P21 with ferroelectric behavior. A typical ferroelectric feature of electric hysteresis loop was obtained, with remanent polarization (Pr) of ca. 0.014 µC·cm−2 and coercive field (Ec) of 1.2 kV·cm−1.