期刊
NANOTECHNOLOGY
卷 31, 期 24, 页码 -出版社
IOP PUBLISHING LTD
DOI: 10.1088/1361-6528/ab7b08
关键词
carbon dots; multiple-color emission; fluorescence; white-light emission
资金
- National Natural Science Foundation of China [21804106, 21775097]
- China Postdoctoral Science Foundation [2018T111033]
- Natural Science Basic Research Plan in Shaanxi Province of China [2018JQ2021]
- Fundamental Research Funds for the Central Universities [GK201801006, XJJ2018247]
Multiple-color emissive carbon dots (C-dots) are gaining increasing attention in various fields. Herein, we report a facile solvothermal method for the synthesis of multiple-color emissive C-dots with the aim of white-light emission. Under single ultraviolet-light excitation, three C-dots emit a easily controlled fluorescent emission wavelength at 440 nm, 500 nm and 610 nm by using different three amines (either ammonium hydroxide, ethylenediamine or p-phenylenediamine, respectively) and pyromellitic dianhydride as molecular precursors while another three C-dots emit a controllable fluorescent emission wavelength at 500 nm, 550 nm and 585 nm by using same three amines and naphthalene-1,4,5,8-tetracarboxylic dianhydride as molecular precursors. The maximum fluorescence wavelength of these C-dots is red-shifted by changing three different amines molecular precursors from ammonium hydroxide, ethylenediamine, to p-phenylenediamine. Furthermore, these C-dots have shown promising applications in the fields of white-light-emitting diodes devices and color printing.
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