Vijayakanth Thangavel, Sahoo Supriya, Kothavade Premkumar, Bhan Sharma Vijay, Kabra Dinesh, Zaręba Jan K, Shanmuganathan Kadhiravan, Boomishankar Ramamoorthy
Department of Chemistry and Centre for Energy Science, Indian Institute of Science Education and Research, Pune, Dr. Homi Bhabha Road, Pune, 411008, India.
Present address: The Shmunis School of Biomedicine and Cancer Research, George S. Wise, Faculty of Life Sciences, Tel Aviv University, Tel Aviv, 6997801, Israel.
Angew Chem Int Ed Engl. 2023 Jan 16;62(3):e202214984. doi: 10.1002/anie.202214984. Epub 2022 Dec 12.
Hybrid materials possessing piezo- and ferroelectric properties emerge as excellent alternatives to conventional piezoceramics due to their merits of facile synthesis, lightweight nature, ease of fabrication and mechanical flexibility. Inspired by the structural stability of aminophosphonium compounds, here we report the first A BX type cyanometallate [Ph ( PrNH) P] [Fe(CN) ] (1), which shows a ferroelectric saturation polarization (P ) of 3.71 μC cm . Compound 1 exhibits a high electrostrictive coefficient (Q ) of 0.73 m C , far exceeding those of piezoceramics (0.034-0.096 m C ). Piezoresponse force microscopy (PFM) analysis demonstrates the polarization switching and domain structure of 1 further confirming its ferroelectric nature. Furthermore, thermoplastic polyurethane (TPU) polymer composite films of 1 were prepared and employed as piezoelectric nanogenerators. Notably, the 15 wt % 1-TPU device gave a maximum output voltage of 13.57 V and a power density of 6.03 μW cm .
由于具有易于合成、重量轻、易于制造和机械柔韧性等优点，兼具压电和铁电特性的混合材料成为传统压电陶瓷的优秀替代品。受氨基鏻化合物结构稳定性的启发，我们在此报告首例ABX型氰基金属酸盐[Ph(PrNH)P][Fe(CN)]（1），其铁电饱和极化强度（P）为3.71 μC cm。化合物1表现出高达0.73 m C的高电致伸缩系数（Q），远远超过压电陶瓷（0.034 - 0.096 m C）。压电响应力显微镜（PFM）分析证实了1的极化切换和畴结构，进一步确认了其铁电性质。此外，制备了1的热塑性聚氨酯（TPU）聚合物复合薄膜，并用作压电纳米发电机。值得注意的是，含15 wt% 1的TPU器件产生的最大输出电压为13.57 V，功率密度为6.03 μW cm。
