Biodegradable ferroelectric molecular crystal with large piezoelectric response

IF 44.7 1区综合性期刊 Q1 MULTIDISCIPLINARY SCIENCES

Science Pub Date : 2024-03-28 DOI:10.1126/science.adj1946

Han-Yue Zhang, Yuan-Yuan Tang, Zhu-Xiao Gu, Peng Wang, Xiao-Gang Chen, Hui-Peng Lv, Peng-Fei Li, Qing Jiang, Ning Gu, Shenqiang Ren, Ren-Gen Xiong

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引用次数: 0

Abstract

Transient implantable piezoelectric materials are desirable for biosensing, drug delivery, tissue regeneration, and antimicrobial and tumor therapy. For use in the human body, they must show flexibility, biocompatibility, and biodegradability. These requirements are challenging for conventional inorganic piezoelectric oxides and piezoelectric polymers. We discovered high piezoelectricity in a molecular crystal HOCH₂(CF₂)₃CH₂OH [2,2,3,3,4,4-hexafluoropentane-1,5-diol (HFPD)] with a large piezoelectric coefficient d₃₃ of ~138 picocoulombs per newton and piezoelectric voltage constant g₃₃ of ~2450 × 10⁻³ volt-meters per newton under no poling conditions, which also exhibits good biocompatibility toward biological cells and desirable biodegradation and biosafety in physiological environments. HFPD can be composite with polyvinyl alcohol to form flexible piezoelectric films with a d₃₃ of 34.3 picocoulombs per newton. Our material demonstrates the ability for molecular crystals to have attractive piezoelectric properties and should be of interest for applications in transient implantable electromechanical devices.

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具有大压电响应的可生物降解铁电分子晶体

瞬态植入式压电材料是生物传感、药物输送、组织再生、抗菌和肿瘤治疗的理想材料。要在人体中使用，这些材料必须具有柔韧性、生物相容性和生物降解性。这些要求对于传统的无机压电氧化物和压电聚合物来说具有挑战性。我们发现了分子晶体 HOCH2(CF2)3CH2OH [2,2,3,3,4,4-hexafluoropentane-1,5-diol (HFPD)]的高压电性，在无极化条件下，其压电系数 d33 约为 138 皮库仑/牛顿，压电电压常数 g33 约为 2450 × 10-3 伏特-米/牛顿、它还对生物细胞具有良好的生物相容性，在生理环境中具有理想的生物降解性和生物安全性。HFPD 可与聚乙烯醇复合形成柔性压电薄膜，d33 为 34.3 皮库仑/牛顿。我们的材料展示了分子晶体具有吸引人的压电特性的能力，在瞬时植入式机电设备中的应用应该会很有意义。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Science 综合性期刊-综合性期刊

CiteScore

61.10

自引率

0.90%

发文量

审稿时长

2.1 months

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