We first employed FTIR spectroscopy (Fig. ) to conduct the analysis of the functional groups, present in the homopolymers and the scaffold (PEDOT-PCL). FTIR spectra of both model PCL and PEDOT are in accordance well with the literature . Similarly, FTIR spectrum of PEDOT-PCL exhibits transmittance at 3400 cm 1 and 2850-2950 cm 1 region, originating from the hydroxyl group and aliphatic C-H stretching peaks belonging to PCL, respectively. Weak aromatic C-H stretching peaks around 3100 cm⁻¹ are attributed to the thiophene ring. Moreover, a shifting of the peaks towards average positions can be observed in the scaffold's spectrum compared with model PCL's and PEDOT's spectra. Notably, a significant change is observed in the fingerprint region and below 1750 cm⁻¹, where the PEDOT-PCL spectrum exhibits two distinct carbonyl stretching peaks (C=O) at 1721 cm⁻¹ and 1702 cm⁻¹. While the peak at higher wavenumber is in accordance with PCL's spectrum, peak at lower wavenumber which doesn't belong to the carbonyl peak of the photoinitiator (PAB) or that of EDOT or ECL (Fig. ). This could be attributed to the random attachment of the growing chains of PCL to PEDOT oligomers yielding a PEDOT-ran-PCL. Another support for the random attachment of thiophene rings was observed in the IR spectrum of the polymer sample taken after the first hour, where widely distributed multiple carbonyls in the lower wavenumbers were present (Fig. ). In addition, we investigated the molecular weights of the homopolymers and scaffold using gel-permeation chromatography (GPC). Reaction details, molecular weights, and polydispersity data of PCL, PEDOT and PEDOT-PCL scaffold are depicted in Table . [a] All the reactions were performed using 500 L DCM solvent except the visible light experiment (415 nm) which was performed in the absence of solvent (bulk system). More details of the photopolymerization procedures can be found in the methods section [b] Conversions were determined gravimetrically after the purification and drying of the samples. [c] Determined by GPC using a refractive index detector optimized with polystyrene standards and using a light-scattering detector.