Embedding carbon dots in superabsorbent polymers for additive manufacturing

Yiqun Zhou, Keenan J. Mintz, Cagri Y. Oztan, Sajini D. Hettiarachchi, Zhili Peng, Elif S. Seven, Piumi Y. Liyanage, Sabrina De La Torre, Emrah Celik, Roger M. Leblanc

Research output: Contribution to journalArticlepeer-review

28 Scopus citations


A type of orange carbon dots (O-CDs) synthesized via an ultrasonication route with citric acid and 1,2-phenylenediamine as precursors was embedded into sodium polyacrylate (SPA) as the ink for 3D printing. Characterizations of these spherical O-CDs revealed an ultra-small size (~2 nm) and excitation-independent, but solvent dependent, emission. The O-CDs were evenly distributed with low degree of aggregation in sodium polyacrylate (SPA), which was achieved due to the property that SPA can absorb water together with O-CDs. The 3D printed photoluminescent objective with the ink revealed a great potential for high yield application of these materials for additive manufacturing. This also represents the first time, bare CDs have been reported as a photoluminescent material in 3D printing, as well as the first time SPA has been reported as a material for 3D printing.

Original languageEnglish (US)
Article number921
Issue number8
StatePublished - Aug 17 2018


  • 3D printing
  • Additive manufacturing
  • Carbon dots
  • Embedment
  • Solvent effect
  • Superabsorbent polymer

ASJC Scopus subject areas

  • Chemistry(all)
  • Polymers and Plastics


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