School of Materials Science and Engineering, Gwangju Institute of Science and Technology (GIST), 123 Cheomdangwagi-ro, Buk-gu, Gwangju, 61005, Korea.
Nanoscale. 2017 May 18;9(19):6545-6550. doi: 10.1039/c7nr01060e.
Considerable research approaches have focused on improving the crystallinity of conducting polymers to enhance the electrical conductivity. However, it is difficult to control the arrangement of polymer chains without the use of expensive and complex methods because of the intrinsic morphology of polymers. Herein, we report a one-step in situ process to produce controlled molecular-scale ordered polyaniline (PANI) films by coordination crosslinking with Zn ions using solvent-vapor thermal annealing (SVTA). The resulting PANI film crosslinked by Zn coordination has a face-centered cubic structure at the molecular scale, which was confirmed by high-voltage electron microscopy. The in situ coordination crosslinking produced a new class of molecular ordering in the PANI films and drastically enhanced their conductivity, showing their potential for use in various electronic and energy devices.
相当多的研究方法集中在提高导电聚合物的结晶度，以提高其电导率。然而，由于聚合物的固有形态，如果不使用昂贵和复杂的方法，就很难控制聚合物链的排列。在此，我们报告了一种通过溶剂蒸汽热退火（SVTA）与 Zn 离子配位交联一步原位制备可控分子尺度有序聚苯胺（PANI）薄膜的方法。用 Zn 配位交联得到的 PANI 薄膜在分子尺度上具有面心立方结构，这一点通过高压电子显微镜得到了证实。原位配位交联在 PANI 薄膜中产生了一种新的分子有序化，极大地提高了它们的电导率，显示了它们在各种电子和能源器件中的应用潜力。
