Conducting polymers such as poly(3,4-ethylenedioxythiophene):poly(styrene sulfonate) (PEDOT:PSS), polypyrrole (PPy), and polyaniline (PAni) have attracted great attention as promising electrodes that interface with biological organisms. However, weak and unstable adhesion of conducting polymers to substrates and devices in wet physiological environment has greatly limited their utility and reliability. Here, we report a general yet simple method to achieve strong adhesion of various conducting polymers on diverse insulating and conductive substrates in wet physiological environment. The method is based on introducing a hydrophilic polymer adhesive layer with a thickness of a few nanometers, which forms strong adhesion with the substrate and an interpenetrating polymer network with the conducting polymer. The method is compatible with various fabrication approaches for conducting polymers without compromising their electrical or mechanical properties. We further demonstrate adhesion of wet conducting polymers on representative bioelectronic devices with high adhesion strength, conductivity, and mechanical and electrochemical stability.

导电聚合物，例如聚（3,4-乙撑二氧噻吩）：聚（苯乙烯磺酸盐）（PEDOT：PSS），聚吡咯（PPy）和聚苯胺（PAni），作为与生物接触的有希望的电极已引起了极大的关注。但是，在潮湿的生理环境中，导电聚合物对基材和设备的弱且不稳定的粘附性极大地限制了它们的实用性和可靠性。在这里，我们报告了一种通用而简单的方法，可以在潮湿的生理环境中实现各种导电聚合物在各种绝缘和导电基材上的牢固粘合。该方法基于引入厚度为几纳米的亲水性聚合物粘合剂层，该粘合剂层与基底形成强粘附力，并且与导电聚合物形成互穿聚合物网络。该方法与用于导电聚合物的各种制造方法兼容，而不损害其电或机械性能。我们进一步证明了湿导电聚合物在具有高粘附强度，导电性以及机械和电化学稳定性的代表性生物电子设备上的粘附性。