CAS Center for Excellence in Nanoscience, Beijing Key Laboratory of Micro-Nano Energy and Sensor, Beijing Institute of Nanoenergy and Nanosystems, Chinese Academy of Sciences, 100083, Beijing, P. R. China.
State Key Laboratory of Fine Chemicals, Department of Polymer Science & Materials, Dalian University of Technology, Dalian, 116012, P. R. China.
Small Methods. 2023 Jun;7(6):e2201593. doi: 10.1002/smtd.202201593. Epub 2023 Mar 9.
Regulating the ranking of polymer in triboelectric series over a wide range is of great help for material's selection of triboelectric nanogenerators (TENGs). Herein, fluorinated poly(phthalazinone ether)s (FPPEs) with tunable molecular structure and aggregate structure are synthesized by co-polycondensation, while the large positive ranking shift in the triboelectric series can be achieved by introducing phthalazinone moieties with strong electron donating capability. FPPE-5, which includes abundant phthalazinone moieties, is more positive than all of the previously reported triboelectric polymers. Hence, the regulating range of FPPEs in this work updates a new record in triboelectric series, which is wider than that of previous works. A peculiar crystallization behavior, capable of trapping and storing more electrons, has been observed in FPPE-2 with 25% phthalazinone moieties. Correspondingly, FPPE-2 is more negative than FPPE-1 without a phthalazinone moiety, which is an unexpected shift against the common changing tendency in triboelectric series. With FPPEs films as the probing material, a tactile TENG sensor is applied to enable material identification via electrical signal polarity. Hence, this study demonstrates a strategy to regulate the series of triboelectric polymers by copolymerization using monomers with distinct electrification capabilities, where both the monomer ratio and the peculiar nonlinear behavior can control triboelectric performance.
在较宽范围内调节聚合物在摩擦电序列中的排列顺序，对于摩擦纳米发电机（TENG）的材料选择有很大帮助。在此，通过共聚合成了具有可调分子结构和聚集结构的氟化聚（苯并二恶嗪醚）（FPPE），而通过引入具有强供电子能力的苯并二恶嗪基团，可以实现摩擦电序列中较大的正序移。包含丰富苯并二恶嗪基团的 FPPE-5 比所有先前报道的摩擦电聚合物都更具正电性。因此，本工作中 FPPE 在摩擦电序列中的调节范围更新了一个新记录，比以前的工作更宽。在具有 25%苯并二恶嗪基团的 FPPE-2 中观察到一种特殊的结晶行为，能够捕获和储存更多的电子。相应地，FPPE-2 比没有苯并二恶嗪基团的 FPPE-1 更具负电性，这与摩擦电序列中的常见变化趋势相悖。使用 FPPE 薄膜作为探测材料，触觉 TENG 传感器可用于通过电信号极性进行材料识别。因此，本研究通过使用具有不同起电能力的单体进行共聚，展示了一种调节摩擦电聚合物序列的策略，其中单体比和特殊的非线性行为都可以控制摩擦电性能。
