Journal
NATURE COMMUNICATIONS
Volume 12, Issue 1, Pages -Publisher
NATURE RESEARCH
DOI: 10.1038/s41467-021-22902-w
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Funding
- University of Trieste
- AXA Research Fund
- Italian Ministry of Education MIUR [2017PBXPN4]
- Spanish Ministry of Science, Innovation and Universities, MICIU [PID2019-108523RB-I00]
- ELKARTEK bmG2017 [KK-2017/00008]
- Maria de Maeztu Units of Excellence Program from the Spanish State Research Agency [MDM-2017-0720]
- European Research Council [885323]
- CERIC-ERIC Consortium [20182146]
- INSTM
- European Research Council (ERC) [885323] Funding Source: European Research Council (ERC)
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The formation of novel carbon dots involves 4 consecutive steps: aggregation of small organic molecules, formation of a dense core with an extended shell, collapse of the shell, and aromatization of the core. The authors also demonstrate examples of routes towards tuning the core-shell design, synthesizing five novel carbon dots with an electron-dense core covered by an amine rich ligand shell. Studying the formation processes of carbon nanodots remains crucial for understanding their properties and chemical structure.
The design of novel carbon dots with ad hoc properties requires a comprehensive understanding of their formation mechanism, which is a complex task considering the number of variables involved, such as reaction time, structure of precursors or synthetic protocol employed. Herein, we systematically investigated the formation of carbon nanodots by tracking structural, chemical and photophysical features during the hydrothermal synthesis. We demonstrate that the formation of carbon nanodots consists of 4 consecutive steps: (i) aggregation of small organic molecules, (ii) formation of a dense core with an extended shell, (iii) collapse of the shell and (iv) aromatization of the core. In addition, we provide examples of routes towards tuning the core-shell design, synthesizing five novel carbon dots that all consist of an electron-dense core covered by an amine rich ligand shell. Studying the formation processes of carbon nanodots remains crucial for understanding their properties and chemical structure. Here, the authors investigate the steps involved in their formation process and provide examples for tuning the core-shell design.
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