4.7 Article

Highly efficient carbon dot-based photoinitiating systems for 3D-VAT printing

Journal

POLYMER CHEMISTRY
Volume 14, Issue 38, Pages 4429-4444

Publisher

ROYAL SOC CHEMISTRY
DOI: 10.1039/d3py00726j

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In this study, different types of carbon dots based on citric acid were synthesized and purified with an efficient method. The structural and optical characteristics were compared to commercially available graphene quantum dots, and the mechanism of their action in photopolymerization processes was evaluated. The obtained materials showed good performance in developing effective photoinitiating systems for 3D printing applications. The morphology and chemical composition of hydrogel printouts were characterized extensively using SEM, AFM, Nano-FTIR, and s-SNOM.
In this work, different types of carbon dots (CDs) based on citric acid as a precursor were synthesized using an efficient procedure to purify these materials from low molecular by-products and fluorophores. Their structural and optical characteristics were elaborated and compared to commercially available graphene quantum dots. The mechanism of their action in photopolymerization processes was evaluated. Obtained materials proved to perform well in the development of effective photoinitiating systems for 3D printing applications. The morphology and chemical composition of obtained hydrogel printouts were profoundly characterized via SEM, AFM, Nano-FTIR, and s-SNOM. In this work, different types of carbon dots (CDs) based on citric acid as a precursor were synthesized using an efficient procedure to purify these materials from low molecular by-products and fluorophores.

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