Light-Induced Fabrication of Nanoporous Conductive PEDOT-PCL Scaffold: A Versatile Approach Combining Step-Growth and Chain-Growth Polymerizations

22 June 2023, Version 1
This content is a preprint and has not undergone peer review at the time of posting.


The field of developing electroconductive artificial scaffolds that can imitate the architecture of human tissues is growing rapidly. Poly(3,4-ethylenedioxythiophene) (PEDOT) and poly(-caprolactone) (PCL) are the two gold standards for achieving the required conductivity and robustness in such materials. In this study, we present a novel light-induced method for fabricating a PEDOT-PCL scaffold using phenacyl bromide (PAB) as a single-component photoinitiator. The release of HBr from the step-growth polymerization of EDOT was utilized as in situ catalyst for the chain-growth polymerization of caprolactone. Detailed investigations revealed the formation of a self-assembled nanoporous electroconductive (1.2 mS/cm) scaffold which was characterized by several spectroscopic and microscopic techniques. The fluorescence emission spectra exhibited a mixed solvatochromic behavior, indicating specific interactions between the self-assembled scaffold, as evidenced by TEM, and solvents with varying polarities. Moreover, the same light-induced technique was applied for bulk photopolymerization showcasing the versatility and wide-ranging scope.


light-induced step-growth polymerization
ring-opening polymerization
conductive scaffolds
nanoporous scaffolds

Supplementary materials

Supplementary Information
Supporting Figures


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