Considering the drawbacks associated with these existing methods, light-induced polymerization reactions are prominent alternative methods due to their high efficiency, low energy requirements, and mild conditions . Furhermore, light-mediated polymerizations are particularly well-suited for 3D printing applications, including scaffold fabrication, owing to their unique capability for spatiotemporal control. In this way, the precise printing of scaffolds with desired shapes, sizes, and thicknesses is relatively simple and quick . Fabrication of PEDOT-PCL scaffolds with a light-induced polymerization method can be considered as a favorable approach to eliminate some of the drawbacks of the previous methods. However, to the best of our knowledge, the synthesis of PEDOT-PCL (or any CP-PCL) scaffold with light-induced polymerizations has not been reported. Therefore, in this work, we report for the first time, lightmediated in situ fabrication of a PEDOT-PCL scaffold, using a single-component photoinitiator, namely, phenacyl bromide (PAB). The utilized system is based on the photoinduced stepgrowth polymerization of EDOT and harnessing the released HBr as an in situ catalyst for the ROP of ECL. The experimental results revealed the successful formation of a self-assembled nanoporous PEDOT-PCL scaffold with exceptional electroconductivity . Furthermore, bulk photopolymerization under visible light irradiation (415 nm) was succeeded which demonstrates the versatility of the proposed approach.