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  • Title: Red, green, and blue luminescence by carbon dots: full-color emission tuning and multicolor cellular imaging.
    Author: Jiang K, Sun S, Zhang L, Lu Y, Wu A, Cai C, Lin H.
    Journal: Angew Chem Int Ed Engl; 2015 Apr 27; 54(18):5360-3. PubMed ID: 25832292.
    Abstract:
    A facile approach for preparation of photoluminescent (PL) carbon dots (CDs) is reported. The three resulting CDs emit bright and stable red, green and blue (RGB) colors of luminescence, under a single ultraviolet-light excitation. Alterations of PL emission of these CDs are tentatively proposed to result from the difference in their particle size and nitrogen content. Interestingly, up-conversion (UC)PL of these CDs is also observed. Moreover, flexible full-color emissive PVA films can be achieved through mixing two or three CDs in the appropriate ratios. These CDs also show low cytotoxicity and excellent cellular imaging capability. The facile preparation and unique optical features make these CDs potentially useful in numerous applications such as light-emitting diodes, full-color displays, and multiplexed (UC)PL bioimaging.
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