An unprecedented azobenzene-based organic single-component ferroelectric

Peng, Hang; Qi, Jun-Chao; Song, Xiaojing; Xiong, Ren‐Gen; Liao, Wei‐Qiang

doi:10.1039/d2sc00689h

Cited by 15 publications

(11 citation statements)

References 53 publications

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“…The organic–inorganic hybrid materials (OIHMs) are a hot scientific topic due to their adjustable structure, easy synthesis, and functional features. − Compared with traditional pure organic or inorganic materials, OHIMs possess more advanced properties. − As one unique property of OHIMs, structural phase transition receives tremendous attention, which can introduce attractive properties, such as switchable dielectric and nonlinear optical switching. − Thus, the OHIMs have great application prospects such as data communications, optoelectronic equipment, memories, actuators, sensors, and capacitors. − …”

Section: Introductionmentioning

confidence: 99%

Reversible Phase Transition and Second-Harmonic Response Based on a Zero-Dimensional Organic–Inorganic Hybrid Compound

et al. 2022

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The organic–inorganic hybrid materials (OIHMs) with stimuli-responsive features show the important scientific attraction in a multifunctional material application field, such as optoelectronic memory and sensors. Especially, designing a functional material with both dielectric switching and second-harmonic generation (SHG) remains attractive. Herein, we report a new OIHM [C7H15NCl] SbCl4 as a phase matching nonlinear optical material and dielectric switch functional materials. It undergoes a reversible phase transition at 297 K and exhibit a harmonic generation (SHG) effect of about 0.53 times that of KH2PO4 (KDP). Meanwhile, it also possesses potential semiconducting properties. This work might provide a strategy for designing novel multifunctional materials in the field of crystals and dielectrics.

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Section: Introductionmentioning

confidence: 99%

Reversible Phase Transition and Second-Harmonic Response Based on a Zero-Dimensional Organic–Inorganic Hybrid Compound

et al. 2022

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“…Here, the phase below T p is designated as room-temperature phase (RTP) and the phase above T p is assigned as high-temperature phase (HTP). Such a high phase transition temperature is higher than most reported single-component phase transition materials. − Additionally, thermogravimetric analysis measurements of 1-R and 1-S showed that decomposition occurred around 550 K (Figure S2), indicating their excellent thermal stability.…”

Section: Resultsmentioning

confidence: 86%

Organic Single-Component Enantiomers with High Phase Transition Temperatures and Dielectric Switching Properties

Ying

Tang

Tan

et al. 2022

Crystal Growth & Design

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Homochirality enables molecules to exhibit many specific physical properties, but single-component homochiral enantiomers with hightemperature reversible phase transitions and excellent dielectric switching properties are rarely reported. Here, we report a pair of single-component organic enantiomeric phase transition materials (R and S)-10,2-camphorsultams (1-R and 1-S). The two enantiomers display very similar physical and chemical properties, including structural phase transition temperatures up to 390 K, steplike dielectric anomalies from 2 to 8, and flexible dielectric switching properties. Homochiral (R and S)-10,2-camphorsultams (1-R and 1-S) crystallize at room temperature in polar point group 222, and the crystal structure and strong circular dichroism signal exhibit a clear mirror-image relationship. Furthermore, the intermolecular interactions of 1-R and 1-S are discussed in detail by Hirshfeld surface analysis. This work will promote the development of highperformance organic single-component reversible plastic phase transition materials.

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“…The blue dots and the dark blue line are the experimental data and the fitting curve, respectively. (b) Diagram of comparison between different organic ferroelectrics. ,,− Note: MDABCO = N -methyl- N ′-diazabicyclo[2.2.2]octonium, 1 = di(benzylamino)-substituted derivative of muconic acid, APFA = 2-amino-2′,4,4′,6,6′-penta-fuoroazobenzene. (c) Correspondence diagram of the SHG intensity and particle size of [HDABCO][ l -MA] at room temperature.…”

Section: Resultsmentioning

confidence: 99%

Enantiomeric Hydrogen-bonded Chains Driving Ferroelectric and Nonlinear Optical Behavior

Zhang

Jiang

et al. 2022

Chem. Mater.

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Organic multiferroic materials have been widely investigated due to their novel physical properties and broad applications. However, the discovery of organic small-molecular multiferroic compounds is still rare. Herein, based on the chemical design strategy of introducing homochirality, we present a pair of enantiomeric organic small-molecular compounds [HDABCO (1,octonium)][L-and D-MA (malic acid)], which displays high Curie temperatures (T c ) of 409/412 K, superior optoelectronic performance, and unique ferroelectric and ferroelastic nature. In comparison with the reported ferroelectrics with the [HDABCO] + cation chain structure, the enantiomers show a neutral one-dimensional chain, where hydrogen bonds connect [HDABCO] + cations and [MA] − anions. Strikingly, [HDABCO][L-and D-MA] exhibit a large second harmonic generation (SHG) intensity of about 2.46 and 2.53 times that of KH 2 PO 4 (KDP), exceeding those of all the organic ferroelectrics (about 0.2−1 × KDP). With excellent SHG signal and ferroic properties, as well as the merit of low acoustic impedance z 0 matching that of the body and easy processing, [HDABCO][L-and D-MA] are potential candidates for future biocompatible electronic devices with multi-functionality.

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An unprecedented azobenzene-based organic single-component ferroelectric

Abstract: Organic single-component ferroelectrics, as an important kind of metal-free ferroelectrics, are highly desirable for their easy processing, mechanical flexibility, and biocompatibility. However, although nearly 50 years have passed since the...

Cited by 15 publications

References 53 publications

Reversible Phase Transition and Second-Harmonic Response Based on a Zero-Dimensional Organic–Inorganic Hybrid Compound

Reversible Phase Transition and Second-Harmonic Response Based on a Zero-Dimensional Organic–Inorganic Hybrid Compound

Organic Single-Component Enantiomers with High Phase Transition Temperatures and Dielectric Switching Properties

Enantiomeric Hydrogen-bonded Chains Driving Ferroelectric and Nonlinear Optical Behavior

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