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Carbon Dots: A Versatile Platform for Cu2+ Detection, Anti-Counterfeiting, and Bioimaging

Authors :
Qian Wang
Xinyi He
Jian Mao
Junxia Wang
Liangliang Wang
Zhongchi Zhang
Yongfei Li
Fenglin Huang
Bin Zhao
Gang Chen
Hua He
Source :
Molecules, Vol 29, Iss 17, p 4211 (2024)
Publication Year :
2024
Publisher :
MDPI AG, 2024.

Abstract

Carbon dots (CDs) have garnered extensive interest in basic physical chemistry as well as in biomedical applications due to their low cost, good biocompatibility, and great aqueous solubility. However, the synthesis of multi-functional carbon dots has always been a challenge for researchers. Here, we synthesized novel CDs with a high quantum yield of 28.2% through the straightforward hydrothermal method using Diaminomaleonitrile and Boc-D-2, 3-diaminopropionic acid. The size, chemical functional group, and photophysical properties of the CDs were characterized by TEM, FTIR, XPS, UV, and fluorescence. It was demonstrated in this study that the prepared CDs have a high quantum yield, excellent photostability, and low cytotoxicity. Regarding the highly water-soluble property of CDs, they were proven to possess selective and sensitive behavior against Cu2+ ions (linear range = 0–9 μM and limit of detection = 1.34 μM). Moreover, the CDs were utilized in fluorescent ink in anti-counterfeiting measures. Because of their low cytotoxicity and good biocompatibility, the CDs were also successfully utilized in cell imaging. Therefore, the as-prepared CDs have great potential in fluorescence sensing, anti-counterfeiting, and bioimaging.

Details

Language :
English
ISSN :
14203049
Volume :
29
Issue :
17
Database :
Directory of Open Access Journals
Journal :
Molecules
Publication Type :
Academic Journal
Accession number :
edsdoj.37e6cfd14b544996a44979bf928b5c88
Document Type :
article
Full Text :
https://doi.org/10.3390/molecules29174211