화학공학소재연구정보센터
홈 로그인 로그아웃 연락처 사이트맵
Journal of Industrial and Engineering Chemistry, Vol.47, 329-335, March, 2017
DOI10.1016/j.jiec.2016.12.002  Export Citation
Microwave-assisted synthesis of luminescent and biocompatible lysine-based carbon quantum dots
Yujin Choi1, Nichaphat Thongsai2, Ari Chae1, Seongho Jo1, Eun Bi Kang3, Peerasak Paoprasert2, †, Sung Young Park1, 3, †, and Insik In4, 1, †
  • 1Department of IT Convergence (Brian Korea PLUS 21), Korea National University of Transportation, 50 Daehak-ro, Chungju 380-702, Republic of Korea
  • 2Department of Chemistry, Faculty of Science and Technology, Thammasat University, Pathumthani 12121, Thailand
  • 3Department of Chemical and Biological Engineering, Korea National University of Transportation, 50 Daehak-ro, Chungju 380-702, Republic of Korea
  • 4Department of Polymer Science and Engineering, Korea National University of Transportation, 50 Daehak-ro, Chungju 380-702, Republic of Korea
E-mail:, ,
Water-soluble carbon quantum dots presenting strong blue photoluminescence with the quantum yield up to 23.3% are simply prepared by microwave treatment of lysine as a building block within 5 min in household microwave oven. The formation of lysine-based carbon quantum dots is estimated to proceed through the microwave induced thermal polyamidation and the subsequent carbonization reaction. More importantly, the control experiments using the other amino acids having linear structures reveals that the branched molecular structure of lysine (AB2 type polyamidation monomer) is one of prerequisite points to obtain strongly luminescent carbon quantum dots with high mass yield. Lysine-based carbon quantum dots are highly nontoxic and biocompatible, enabling bioimaging of cellular media with high degree of pysiological safety.
Keywords:Carbon quantum dots;Lysine;Microwave;Branching;Bioimaging
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