铁电性
聚偏氟乙烯
材料科学
塑料晶体
生物相容性
单斜晶系
纳米技术
聚合物
光电子学
分子
相(物质)
复合材料
有机化学
电介质
化学
冶金
作者
Yong Ai,Zhuxiao Gu,Peng Wang,Yuan‐Yuan Tang,Xiao‐Gang Chen,Hui‐Peng Lv,Peng‐Fei Li,Qing Jiang,Ren‐Gen Xiong,Jun‐Jie Zhang,Han‐Yue Zhang
标识
DOI:10.1002/adma.202405981
摘要
Ferroelectric materials, traditionally comprising inorganic ceramics and polymers, are commonly used in medical implantable devices. However, their nondegradable nature often necessitates secondary surgeries for removal. In contrast, ferroelectric molecular crystals have the advantages of easy solution processing, lightweight, and good biocompatibility, which are promising candidates for transient (short-term) implantable devices. Despite these benefits, the discovered biodegradable ferroelectric materials remain limited due to the absence of efficient design strategies. Here, inspired by the polar structure of polyvinylidene fluoride (PVDF), a ferroelectric molecular crystal 1H,1H,9H,9H-perfluoro-1,9-nonanediol (PFND), which undergoes a cubic-to-monoclinic ferroelectric plastic phase transition at 339 K, is discovered. This transition is facilitated by a 2D hydrogen bond network formed through O-H···O interactions among the oriented PFND molecules, which is crucial for the manifestation of ferroelectric properties. In this sense, by reducing the number of -CF
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