PFM (piezoresponse force microscopy)-aided design for molecular ferroelectrics

Zhang, Han‐Yue; Chen, Xiaogang; Tang, Yuan‐Yuan; Liao, Wei‐Qiang; Di, Fang-Fang; Mu, Xin; Peng, Hang; Xiong, Ren‐Gen

doi:10.1039/c9cs00504h

Cited by 82 publications

(58 citation statements)

References 267 publications

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“…Then, we performed the piezoresponse force microscopy (PFM) 54 study of domain imaging and polarization switching on the (−)-camphanic acid thin film. For annealing, the thin film sample was heated to the paraelectric phase and then cooled to room temperature.…”

Section: Resultsmentioning

confidence: 99%

An organic plastic ferroelectric with high Curie point

Yang

et al. 2022

Chem. Sci.

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Section: Resultsmentioning

confidence: 99%

An organic plastic ferroelectric with high Curie point

Yang

et al. 2022

Chem. Sci.

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“…The luminescent spectrum of ligands is particular attractive. [27][28][29] The chemical structure-induced fluorescence and its luminescent properties are mainly derived from the structural rigidity of coordination compounds, weak force, electronic transitions, and specific metals (transition metals). The solidstate fluorescent spectrum of ligands L 1 -L 5 at room temperature reveals (Figure 5) that maximal emission peaks scattered at 307 nm, 326 nm, 365 nm, 442 nm and 596 nm, respectively.…”

Section: Luminescence Propertiesmentioning

confidence: 99%

Study on the Luminescence and Coordination Behavior of Semi‐rigid Dual‐Benzimidazole Ligands and Complexes

et al. 2022

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In this work, two novel semi‐rigid bisbenzimidazole ligands with different substituents (L1,2‐H; L2,2H‐methyl; L3, 2H‐ethyl; L4, 2H‐isopropyl; L5, 2H‐tertbutyl, which L1‐L3 have been reported,[19,20]to compare the effects of different substituents on properties, herein, we re‐synthesize them) and two coordination compounds are synthesized. Single crystal structure X‐ray diffraction data suggests that the ligand(L1) exhibits boat‐like configuration in the crystal lattice which makes the compound 1 crystallizes in the polar space group (C2), otherwise, chair‐like structure of ligands (L2‐L4) makes compound 2–4 grow in centrosymmetric space group (C2/c). Interestingly, polar compound 1 demonstrates typical ferroelectric behavior with remnant electric polarization (Pr) of 0.308 μC/cm2 and an electric coercive field (Ec) of 20 kV/cm. In addition, the fluorescence of the compounds 1–4 all are in the blue‐violet light region under the combined action of metal ions and organic ligands. Notably, L5 emits bright charming orange light at 365 nm UV light, and we also verified the reason and possibility of luminescence through density functional theory (DFT) calculations. Besides, the photoluminescence quantum yield (PLQY) of the L5 is up to 24.6 % and fluorescence lifetime is 3.29 ns. In short, this work might provide strategy to construct metal organic frameworks (MOFs) with ferroelectric and photoluminescent properties.

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“…Among the 32 crystallographic classes, which include 230 space groups, 21 of them are noncentrosymmetric or piezoelectric (except 432), the remaining 11 belong to centrosymmetric or nonpiezoelectric (inversion center) classes. [ 10 ] The 10 polar point groups [1 (C 1 ), 2 (C 2 ), m (C 1 h ) , mm2 (C 2 v) , 4 (C 4 ), 4mm (C 4 v ) , 3 (C 3 ), 3m (C 3 v ) , 6 (C 6 ), and 6mm (C 6 v ), with a unique polarization axis, whose spontaneous polarization varies with temperature, leading to pyroelectricity and the generation of charge in response to a temperature change. [ 11–13 ] If the intrinsic spontaneous polarization can be reversed or reoriented by an external electric field and produces a polarization reversal or hysteresis loop, the material exhibits ferroelectricity.…”

Section: Introductionmentioning

confidence: 99%

Recent Advances in Organic and Organic–Inorganic Hybrid Materials for Piezoelectric Mechanical Energy Harvesting

Vijayakanth

Liptrot

Gazit

et al. 2022

Adv Funct Materials

201

107

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This article provides a comprehensive overview of piezo-and ferro-electric materials based on organic molecules and organic-inorganic hybrids for mechanical energy harvesting. Molecular (organic and organic-inorganic hybrid) piezo-and ferroelectric materials exhibit significant advantages over traditional materials due to their simple solution-phase synthesis, light-weight nature, thermal stability, mechanical flexibility, high Curie temperature, and attractive piezo-and ferroelectric properties. However, the design and understanding of piezo-and ferroelectricity in organic and organic-inorganic hybrid materials for piezoelectric energy harvesting applications is less well developed. This review describes the fundamental characterization of piezo-and ferroelectricity for a range of recently reported organic and organic-inorganic hybrid materials. The limits of traditional piezoelectric harvesting materials are outlined, followed by an overview of the piezo-and ferroelectric properties of organic and organic-inorganic hybrid materials, and their composites, for mechanical energy harvesting. An extensive description of peptide-based and other biomolecular piezo-and ferroelectric materials as a biofriendly alternative to current materials is also provided. Finally, current limitations and future perspectives in this emerging area of research are highlighted. This perspective aims to guide chemists, materials scientists, and engineers in the design of practically useful organic and organic-inorganic hybrid piezo-and ferroelectric materials and composites for mechanical energy harvesting.

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PFM (piezoresponse force microscopy)-aided design for molecular ferroelectrics

Abstract: Along with the rapid development of ferroelectrochemistry, piezoresponse force microscopy (PFM) with high detection speed and accuracy has become a powerful tool for screening the potential candidates for molecular ferroelectrics.

Cited by 82 publications

References 267 publications

An organic plastic ferroelectric with high Curie point

An organic plastic ferroelectric with high Curie point

Study on the Luminescence and Coordination Behavior of Semi‐rigid Dual‐Benzimidazole Ligands and Complexes

Recent Advances in Organic and Organic–Inorganic Hybrid Materials for Piezoelectric Mechanical Energy Harvesting

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