PT  - JOURNAL ARTICLE
AU  - Fu, Da-Wei
AU  - Cai, Hong-Ling
AU  - Liu, Yuanming
AU  - Ye, Qiong
AU  - Zhang, Wen
AU  - Zhang, Yi
AU  - Chen, Xue-Yuan
AU  - Giovannetti, Gianluca
AU  - Capone, Massimo
AU  - Li, Jiangyu
AU  - Xiong, Ren-Gen
TI  - Diisopropylammonium Bromide Is a High-Temperature Molecular Ferroelectric Crystal
AID  - 10.1126/science.1229675
DP  - 2013 Jan 25
TA  - Science
PG  - 425--428
VI  - 339
IP  - 6118
4099  - http://science.sciencemag.org/content/339/6118/425.short
4100  - http://science.sciencemag.org/content/339/6118/425.full
SO  - Science2013 Jan 25; 339
AB  - Molecular ferroelectrics are highly desirable for their easy and environmentally friendly processing, light weight, and mechanical flexibility. We found that diisopropylammonium bromide (DIPAB), a molecular crystal processed from aqueous solution, is a ferroelectric with a spontaneous polarization of 23 microcoulombs per square centimeter [close to that of barium titanate (BTO)], high Curie temperature of 426 kelvin (above that of BTO), large dielectric constant, and low dielectric loss. DIPAB exhibits good piezoelectric response and well-defined ferroelectric domains. These attributes make it a molecular alternative to perovskite ferroelectrics and ferroelectric polymers in sensing, actuation, data storage, electro-optics, and molecular or flexible electronics.