A Nickel(II) Nitrite Based Molecular Perovskite Ferroelectric. Issue 26 (24th May 2019)

• Record Type: Journal Article
• Authors: Xiong, Yu‐An; Sha, Tai‐Ting; Pan, Qiang; Song, Xian‐Jiang; Miao, Shu‐Rong; Jing, Zheng‐Yin; Feng, Zi‐Jie; You, Yu‐Meng; Xiong, Ren‐Gen
• Is Part Of: Angewandte Chemie international edition. Volume 58:Issue 26(2019)
• Page Start: 8857
• Page End: 8861
• Publication Date: 2019-05-24
• Subjects: chemical design -- molecular ferroelectrics -- nitrite -- organic–inorganic hybrid perovskites -- piezoresponse force microscopy; Chemistry -- Periodicals; 540
• DOI: 10.1002/anie.201904305
• Languages: English
• ISSNs: 1433-7851

Abstract

Abstract: The X‐site ion in organic–inorganic hybrid ABX3 perovskites (OHPs) varies from halide ion to bridging linkers like HCOO −, N3 −, NO2 −, and CN − . However, no nitrite‐based OHP ferroelectrics have been reported so far. Now, based on non‐ferroelectric [(CH3 )4 N][Ni(NO2 )3 ], through the combined methodologies of quasi‐spherical shape, hydrogen bonding functionality, and H/F substitution, we have successfully synthesized an OHP ferroelectric, [FMeTP][Ni(NO2 )3 ] (FMeTP =N ‐fluoromethyl tropine). As an unprecedented nitrite‐based OHP ferroelectric, the well‐designed [FMeTP][Ni(NO2 )3 ] undergoes the ferroelectric phase transition at 400 K with an Aizu notation of 6/ mmm F m, showing multiaxial ferroelectric characteristics. This work is a great step towards not only enriching the molecular ferroelectric families but also accelerating the potential practical applications. Abstract : Through a combination of quasi‐spherical shape, hydrogen bonding functionality, and H/F substitution, a molecular perovskite ferroelectric was successfully synthesized, [FMeTP][Ni(NO2 )3 ] (FMeTP =N ‐fluoromethyl tropine). As an unprecedented nitrite‐based molecular ferroelectric, it undergoes a ferroelectric phase transition at 400 K with an Aizu notation of 6/ mmm F m, showing multiaxial characteristics.