Copolymerization is a powerful strategy for regulating the performance of materials, but it is still a challenge of in-situ electrochemical co-deposition for homogeneous thin films, mainly due to activity difference of electrochemical precursors. Herein we reported an electrochemical co-deposition from a pair of designed precursors combined luminescent OCBzC and additive E−3-Cz. Although the electrochemical activity of E−3-Cz is much higher than OCBzC, the co-deposition exhibits as a well linear growth remarkably, which produce the cross-linked thin films with enhanced luminescence and carrier mobility. The deposition rate of co-deposition is more than 2 times of OCBzC only. The copolymerization effectively makes film more compactness with refractive index increased from 1.742 (OCBzC only) to 1.763 (copolymers) and the hole mobility increased from 4.8 × 10⁻⁸ cm² V⁻¹ S⁻¹ (OCBzC only) to 1.1 × 10⁻⁶ cm² V⁻¹ S⁻¹ (copolymer). All the results exhibit potential applications of electro-copolymerization film in the field of electroluminescence and display.

共聚是调节材料性能的有力策略，但对于均质薄膜而言，原位电化学共沉积仍然是一个挑战，主要是由于电化学前体的活性差异。在本文中，我们报道了由一对设计的前体组成的电化学共沉积，这些前体结合了发光OCBzC和添加剂E-3-Cz。尽管E-3-Cz的电化学活性远高于OCBzC，但共沉积显着表现出良好的线性生长，从而产生了具有增强的发光性和载流子迁移率的交联薄膜。共沉积的沉积速率仅是OCBzC的2倍以上。共聚有效地提高了膜的致密性，其折射率从1.742（仅OCBzC）提高到1。^-8  cm ²  V ^-1  S ^-1（仅OCBzC）至1.1×10 ^-6  cm ²  V ^-1  S ^-1（共聚物）。所有结果显示了电共聚膜在电致发光和显示领域的潜在应用。