Nanotechnology
Nanotechnology
5 years ago

Mechanochemical synthesis of fluorescent carbon dots from cellulose powders.

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

Publisher URL: http://doi.org/10.1088/1361-6528/aaad49

DOI: 10.1088/1361-6528/aaad49

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