Carbon-based dots co-doped with nitrogen and sulfur for high quantum yield and excitation-independent emission.
نویسندگان
چکیده
Helpful elements: A facile bottom-up method using citric acid and L-cysteine as a precursor has been developed to prepare graphene quantum dots (GQDs) co-doped with nitrogen and sulfur. A new type and high density of surface state of GQDs arises, leading to high yields (more than 70 %) and excitation-independent emission. FLQY = fluorescence quantum yield.
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ورودعنوان ژورنال:
- Angewandte Chemie
دوره 52 30 شماره
صفحات -
تاریخ انتشار 2013