화학공학소재연구정보센터
홈 로그인 로그아웃 연락처 사이트맵
Journal of Industrial and Engineering Chemistry, Vol.65, 104-111, September, 2018
DOI10.1016/j.jiec.2018.04.018  Export Citation
Bandgap engineering of nanosized carbon dots through electron-accepting functionalization
Jongwan Choi, Nakjoong Kim1, Jin-Woo Oh2, †, and Felix Sunjoo Kim3, †
  • Department of Chemistry and Smith Liberal Arts College, Sahmyook University, Seoul 01795, Republic of Korea
  • 1Department of Chemistry, Hanyang University, Seoul 04763, Republic of Korea
  • 2Department of Nanoenergy Engineering, Pusan National University, Busan 46241, Republic of Korea
  • 3School of Chemical Engineering and Materials Science, Chung-Ang University, Seoul 06974, Republic of Korea
E-mail:,
We report tuning of energy bandgap of nanosized carbon dots by chemical modification with electronaccepting moieties. The carbon dot derivatives were synthesized by oxidation and hydrothermal reaction, followed by addition/substitution reactions, resulting in uniform-sized carbon dots. Structural characterization and photophysical investigation were performed by applying various microscopic and spectroscopic techniques. The bandgap of the carbon dots was controlled by chemical functionalization with nitro and nitrile groups, as evidenced by the red-shift in the absorption and photoluminescence emission spectra. Calculations based on density functional theory were employed to support the observed bandgap tuning via functionalization of the carbon dots.
Keywords:Carbon dot;Graphene quantum dot;Photophysical property;Electron acceptor;Bandgap engineering
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