Flexible electronic materials of polyaniline (PANI) chemically interacted with Na₂S have been developed with the objective of improving and tuning its electrical transport properties and optical properties. The chemical interaction of Na₂S with PANI was realized by the synthesis process of physical vapor polymerization of aniline over cellulose substrate. The prepared samples of PANI interacted with Na₂S at different concentrations (3%, 5%, 7%, and 10%) have been studied through X-ray diffraction (XRD) measurement, scanning electron microscope (SEM) measurement, analysis of FTIR spectra, I-V measurement, and analysis of UV–vis–NIR absorption spectra. From XRD measurement it was observed that the peaks corresponding to the emeraldine form of PANI were obtained during polymerization, which is electrically conductive. Being partially polymerized, this form of PANI provides the scope for further functionalization through chemical interaction with Na₂S. As a consequence of chemical interaction with Na₂S, its resistivity was found to increase systematically with the increase of concentration of Na₂S. A twelve times change in resistivity was recorded with Na₂S interaction. The temperature dependence of electrical conductivity shows an excellent positive temperature coefficient of resistance, which is of profound technological significance for self-controlled overheating protection of electronic devices.

已开发出与 Na ₂ S 发生化学相互作用的聚苯胺 (PANI) 柔性电子材料，目的是改善和调整其电传输性能和光学性能。_{Na 2} S 与聚苯胺的化学相互作用是通过苯胺在纤维素基质上物理气相聚合的合成过程实现的。制备的 PANI 样品与 Na _{2相互作用}通过 X 射线衍射 (XRD) 测量、扫描电子显微镜 (SEM) 测量、FTIR 光谱分析、IV 测量和紫外-可见-近红外吸收光谱。从 XRD 测量中观察到，在聚合过程中获得了与 PANI 的翠绿形式相对应的峰，该峰是导电的。由于部分聚合，这种形式的 PANI 通过与 Na 2 S 的化学相互作用提供了进一步功能化的范围_。由于与 Na 2 S 的化学相互作用，_{发现其电阻率随着 Na 2} S浓度的增加而系统地增加。用 Na 记录了 12 倍的电阻率变化_2S交互。电导率的温度依赖性表现出优异的电阻正温度系数，这对于电子设备的自控过热保护具有深远的技术意义。