3-oxetanylmethanol is used as additive to poly (3,4-ethylenedioxythiophene):polystyrene sulfonate (PEDOT:PSS) water dispersions and the properties of thin films, prepared by spin-coating and ink-jet printing, either on glass or flexible polyethylene terephthalate (PET) substrates, are investigated. ¹H NMR studies revealed that 3-oxetanylmethanol is reactive within the PEDOT:PSS medium during the film drying step at 120 °C, to form polyether compounds. Chemical cross-linking established through the esterification reaction of pendant hydroxyl groups in polyether chains, resulting from the 3-oxetanylmethanol in situ polymerization, and sulfonate groups from PSS, is also identified by the ¹H NMR studies. Spin-cast films prepared from this formulation on either glass or PET exhibited electrical conductivity enhanced by more than two orders of magnitude, when compared to films obtained with the pristine PEDOT:PSS dispersion, reaching maximum values of around 596 and 682 Scm⁻¹ for films on glass and PET, respectively, together with improved water-resistance. Atomic force microscopy and Raman spectroscopic studies, indicating that PEDOT chains are organized in more ordered domains in the films of the oxetane-based formulations, suggest that the polyether compounds modify the PEDOT:PSS phase segregation and promote charge transport across conducting PEDOT segments. Subsequently, improved conductivities and stability were also found for films prepared by high-resolution ink-jet printing of the formulations that led to the most conductive spin coated films. The potential application of the new ink formulations in printed electrodes interfacing aqueous media was assessed by ink-jet printing PEDOT-based electrochemical transistors operating with aqueous KCl electrolyte.

3-氧杂环丁基甲醇用作聚（3,4-乙撑二氧噻吩）：聚苯乙烯磺酸（PEDOT：PSS）水分散体的添加剂，以及通过旋涂和喷墨印刷在玻璃或柔性聚乙烯上制备的薄膜的性能对苯二甲酸酯（PET）基材进行了研究。¹ H NMR 研究表明，在 120 °C 的薄膜干燥步骤中，3-氧杂环丁基甲醇在 PEDOT:PSS 介质中发生反应，形成聚醚化合物。¹ H NMR研究还鉴定了通过 3-氧杂环丁基甲醇原位聚合产生的聚醚链中的侧羟基和 PSS 的磺酸盐基团的酯化反应建立的化学交联。与使用原始 PEDOT:PSS 分散体获得的薄膜相比，用该配方在玻璃或 PET 上制备的旋涂薄膜的电导率提高了两个数量级以上，达到最大值约 596 和 682 Scm ^-1分别在玻璃和 PET 上贴膜，并提高了防水性。原子力显微镜和拉曼光谱研究表明，基于氧杂环丁烷的配方薄膜中的 PEDOT 链组织成更有序的区域，这表明聚醚化合物可以改变 PEDOT:PSS 相分离并促进跨导电 PEDOT 链段的电荷传输。随后，通过高分辨率喷墨印刷配方制备的薄膜也发现了改进的导电性和稳定性，从而形成了最具导电性的旋涂薄膜。通过喷墨打印基于 PEDOT 的电化学晶体管（与水性 KCl 电解质一起工作），评估了新油墨配方在与水性介质连接的印刷电极中的潜在应用。