Carbon‐Based Dots Co‐doped with Nitrogen and Sulfur for High Quantum Yield and Excitation‐Independent Emission
- 11 June 2013
- journal article
- research article
- Published by Wiley in Angewandte Chemie
- Vol. 52 (30), 7800-7804
- https://doi.org/10.1002/anie.201301114
Abstract
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.Keywords
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