High photoluminescent nitrogen-doped carbon dots with unique double wavelength fluorescence emission for cell imaging
2018; Elsevier BV; Volume: 216; Linguagem: Inglês
10.1016/j.matlet.2018.01.002
ISSN1873-4979
AutoresWenli Gao, Yiming Ma, Yanmei Zhou, Haohan Song, Li Li, Shanhu Liu, Xiaoqiang Liu, Bin Gao, Chuanzhi Liu, Kunpeng Zhang,
Tópico(s)Advanced biosensing and bioanalysis techniques
ResumoHigh photoluminescent (PL) nitrogen-doped carbon dots (N-CDs) have been synthesized using ferric ammonium citrate (FAC) and urea as raw materials by simple one-pot hydrothermal process. The N-CDs possess bright blue fluorescence (centred at 450 nm; 36.2% quantum yield) and green fluorescence (centred at 530 nm; 47.6% quantum yield) only by adjusting the excitation wavelength from 310 nm to 510 nm. The N-CDs exhibited high N content of 32.81 wt%, low cytotoxicity, and good PL stability at different pH values, ion strengths and temperature, respectively. As-prepared N-CDs were explored for cell imaging with great biocompatibility. The remarkable properties of N-CDs indicated their potential toward sensing and biological applications.
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