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2D Layered Dipeptide Crystals for Piezoelectric Applications

机译：用于压电应用的2D分层二肽晶体

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摘要

2D piezoelectric materials such as transition metal dichalcogenides are attracting significant attention because they offer various benefits over bulk piezoelectrics. In this work, the fabrication of layered biomolecular crystals of diphenylalanine (FF) obtained via a co-assembly of l,l- and d,d- enantiomers of FF monomers is reported. Their crystal structure, thermal and chemical stabilities, and piezoelectric properties are investigated. Single crystal X-ray diffraction results show that FF enantiomers are arranged in the form of bilayers consisting of monomers with alternating chirality packed into a tape-like monoclinic structure belonging to a polar space group P2(1). Each bilayer (approximate to 1.5 nm thick) demonstrates strong out-of-plane piezoelectricity (d(33) approximate to 20 pm V-1) that is almost an order of magnitude higher than in the archetypical piezoelectric material quartz. The grown crystals demonstrate better thermal and chemical stabilities than self-assembled hexagonal FF nanotubes studied in the past. Piezoelectric bilayers, being held via weak aromatic interaction in the bulk crystals, can be exfoliated by mechanical or chemical methods, thus resulting in a 2D piezoelectric material, which can find various applications in biocompatible and ecologically friendly electromechanical microdevices, such as sensors, actuators, and energy harvesting elements used in implantable and wearable electronics.
机译：2D压电材料如过渡金属二均磷酸酯的吸引力引起了显着的关注，因为它们提供了对散装压电的各种益处。在这项工作中，据报道，通过CF单体的共同组件获得的二苯基丙氨酸（FF）的层状生物分子晶体的制造。研究了它们的晶体结构，热和化学稳定性和压电性能。单晶X射线衍射结果表明，FF对映体以双层的形式排列，所述双层的形式由单体组成，所述单体组成，所述单体组成，所述单体具有交替的肾上腺素，所述肾上腺素填充到属于极性空间组P2（1）的胶带状单斜晶体结构中。每个双层（近似为1.5 nm厚）演示了强平面外压电（D（33）近似到20μmV-1），其几乎比在原型压电材料石英中高的数量级。生长的晶体表明了比过去研究的自组装六边形FF纳米管更好的热和化学稳定性。通过散装晶体中的弱芳族相互作用，可以通过机械或化学方法进行压电双层，从而导致2D压电材料，可以在生物相容性和生态友好友好的机电微生物中找到各种应用，例如传感器，执行器，和能量收集元件用于植入和可穿戴电子产品。

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  • 来源
    《Advanced Functional Materials》 |2021年第43期|2102524.1-2102524.9|共9页
  • 作者

    Zelenovskii Pavel S.; Romanyuk Konstantin; Liberato Michelle S.; Brandao Paula; Ferreira Fabio F.; Kopyl Svitlana; Mafra Luis M.; Alves Wendel A.; Kholkin Andrei L.;

  • 作者单位

    Univ Aveiro Dept Chem P-3810193 Aveiro Portugal|Univ Aveiro CICECO Aveiro Inst Mat P-3810193 Aveiro Portugal|Ural Fed Univ Sch Nat Sci & Math Ekaterinburg 620000 Russia;

    Univ Aveiro CICECO Aveiro Inst Mat P-3810193 Aveiro Portugal|Ural Fed Univ Sch Nat Sci & Math Ekaterinburg 620000 Russia|Univ Aveiro Dept Phys P-3810193 Aveiro Portugal;

    Univ Sao Paulo Inst Chem Sao Paulo Brazil;

    Univ Aveiro Dept Chem P-3810193 Aveiro Portugal|Univ Aveiro CICECO Aveiro Inst Mat P-3810193 Aveiro Portugal;

    Fed Univ ABC Ctr Nat & Human Sci BR-09210580 Santo Andre SP Brazil;

    Univ Aveiro CICECO Aveiro Inst Mat P-3810193 Aveiro Portugal|Univ Aveiro Dept Phys P-3810193 Aveiro Portugal;

    Univ Aveiro Dept Chem P-3810193 Aveiro Portugal|Univ Aveiro CICECO Aveiro Inst Mat P-3810193 Aveiro Portugal;

    Fed Univ ABC Ctr Nat & Human Sci BR-09210580 Santo Andre SP Brazil;

    Univ Aveiro CICECO Aveiro Inst Mat P-3810193 Aveiro Portugal|Ural Fed Univ Sch Nat Sci & Math Ekaterinburg 620000 Russia|Univ Aveiro Dept Phys P-3810193 Aveiro Portugal|Natl Res Tomsk Polytech Univ Phys Mat Sci & Composite Mat Ctr Res Sch Chem & Appl Biomed Sci Tomsk 634050 Russia;

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  • 关键词

    2D materials; organic piezoelectrics; peptide nanostructures; diphenylalanine; piezoelectricity;

    机译：2D材料;有机压电;肽纳米结构;二苯基丙胺;压电;

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