4.8 Article

Tunable multicolor carbon dots prepared from well-defined polythiophene derivatives and their emission mechanism

期刊

NANOSCALE
卷 8, 期 2, 页码 729-734

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ROYAL SOC CHEMISTRY
DOI: 10.1039/c5nr07153d

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资金

  1. NNSF of China [51172244, 11179006, 51472252, 20903110]
  2. National Basic Research Program of China (973 Program) [2012CB932400]
  3. Key Research Program of the Chinese Academy of Sciences [KGZD-EW-T02]

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Various functional precursors based on polythiophene derivatives are designed to prepare carbon dots (C-dots) with tunable emissions ranging from blue to near-infrared (NIR) at a single excitation wavelength (400 nm). The as-prepared C-dots demonstrate homogeneous size, superior optical properties, excellent water solubility, and low cytotoxicity. Thus, the C-dots are candidates for bio-imaging. A tunable photoluminescence mechanism is proposed to result from variations in the surface state and N content.

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