Pourrahimi Amir Masoud, Kumara Sarath, Palmieri Fabrizio, Yu Liyang, Lund Anja, Hammarström Thomas, Hagstrand Per-Ola, Scheblykin Ivan G, Fabiani Davide, Xu Xiangdong, Müller Christian
Department of Chemistry and Chemical Engineering, Chalmers University of Technology, Göteborg, 41296, Sweden.
Department of Electrical Engineering, Chalmers University of Technology, Göteborg, 41296, Sweden.
Adv Mater. 2021 Jul;33(27):e2100714. doi: 10.1002/adma.202100714. Epub 2021 May 28.
Poly(3-hexylthiophene) (P3HT) is found to be a highly effective conductivity-reducing additive for low-density polyethylene (LDPE), which introduces a new application area to the field of conjugated polymers. Additives that reduce the direct-current (DC) electrical conductivity of an insulation material at high electric fields have gained a lot of research interest because they may facilitate the design of more efficient high-voltage direct-current power cables. An ultralow concentration of regio-regular P3HT of 0.0005 wt% is found to reduce the DC conductivity of LDPE threefold, which translates into the highest efficiency reported for any conductivity-reducing additive to date. The here-established approach, i.e., the use of a conjugated polymer as a mere additive, may boost demand in absolute terms beyond the quantities needed for thin-film electronics, which would turn organic semiconductors from a niche product into commodity chemicals.
聚（3-己基噻吩）（P3HT）被发现是低密度聚乙烯（LDPE）一种高效的降低电导率添加剂，这为共轭聚合物领域引入了一个新的应用领域。在高电场下降低绝缘材料直流电导率的添加剂已引起了大量研究兴趣，因为它们可能有助于设计更高效的高压直流电力电缆。发现0.0005 wt%的超低浓度区域规整P3HT可使LDPE的直流电导率降低三倍，这是迄今为止报道的任何降低电导率添加剂的最高效率。这里建立的方法，即仅使用共轭聚合物作为添加剂，可能会绝对地推动需求增长，超出薄膜电子所需的数量，这将使有机半导体从一种小众产品转变为商品化学品。
