Mechanochemical synthesis of fluorescent carbon dots from cellulose powders

Ari Chae, Bo Ram Choi, Yujin Choi, Seongho Jo, Eun Bi Kang, Hyukjin Lee, Sung Young Park, Insik In

Research output: Contribution to journalArticlepeer-review

16 Scopus citations


A novel mechanochemical method was firstly developed to synthesize carbon nanodots (CNDs) or carbon nano-onions (CNOs) through high-pressure homogenization of cellulose powders as naturally abundant resource depending on the treatment times. While CNDs (less than 5 nm in size) showed spherical and amorphous morphology, CNOs (10-50 nm in size) presented polyhedral shape, and onion-like outer lattice structure, graphene-like interlattice spacing of 0.36 nm. CNOs showed blue emissions, moderate dispersibility in aqueous media, and high cell viability, which enables efficient fluorescence imaging of cellular media.

Original languageEnglish
Article number165604
Issue number16
StatePublished - 27 Feb 2018

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© 2018 IOP Publishing Ltd.


  • carbon dots
  • carbon nano-onions
  • cellulose
  • mechanochemistry


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