AI Article Synopsis
- - 1,4-Diazabicyclo[2.2.2]octane (dabco) has been widely used in molecular ferroelectrics, but homochiral versions have not been previously developed.
- - The researchers created two homochiral dabco derivatives, [R and S-2-Me-H dabco][TFSA], by adding a methyl group and introducing homochirality, achieving high transition temperatures of 405.8 K and 415.8 K.
- - This work marks the first successful synthesis of homochiral dabco-based ferroelectrics, paving the way for further research into advanced enantiomeric ferroelectric materials.
Article Abstract
1,4-Diazabicyclo[2.2.2]octane (dabco) and its derivatives have been extensively utilized as building units of excellent molecular ferroelectrics for decades. However, the homochiral dabco-based ferroelectric remains a blank. Herein, by adding a methyl (Me) group accompanied by the introduction of homochirality to the [H dabco] in the non-ferroelectric [H dabco][TFSA] (TFSA=bis(trifluoromethylsulfonyl)ammonium), we successfully designed enantiomeric ferroelectrics [R and S-2-Me-H dabco][TFSA] . The two enantiomers show two sequential phase transitions with transition temperature (T ) as high as 405.8 K and 415.8 K, which is outstanding in both dabco-based ferroelectrics and homochiral ferroelectrics. To our knowledge, [R and S-2-Me-H dabco][TFSA] are the first examples of dabco-based homochiral ferroelectrics. This finding opens an avenue to construct dabco-based homochiral ferroelectrics and will inspire the exploration of more eminent enantiomeric molecular ferroelectrics.
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| http://dx.doi.org/10.1002/anie.202007660 | DOI Listing |
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