Nitrogen-doped carbon dots derived from polyamindoamine dendrimer

RSC Advances ◽  
2016 ◽  
Vol 6 (64) ◽  
pp. 59702-59707 ◽  
Author(s):  
Juncai Shen ◽  
Qing Li ◽  
Yan Zhang ◽  
Xing-jin She ◽  
Cai-Feng Wang ◽  
...  

Nitrogen-doped carbon dots (CDs) were synthesized through a hydrothermal process. The as-prepared CDs were used as fluorescent ink and sensors for the sensitive detection of temperature and Fe3+in aqueous solution.

2021 ◽  
Author(s):  
Qiaoling Liu ◽  
Borong Ren ◽  
Kaixin Xie ◽  
Yanmei Yan ◽  
Ruirong Liu ◽  
...  

Nitrogen doped carbon dots (N-CDs) have been prepared via a one-pot hydrothermal method by using formamide and o-phenylenediamine as the carbon precursors for Fe3+ and HPO42− detection.


Luminescence ◽  
2017 ◽  
Vol 33 (1) ◽  
pp. 243-248 ◽  
Author(s):  
Junjian Li ◽  
Gancheng Zuo ◽  
Xihao Pan ◽  
Wei Wei ◽  
Xiaoliang Qi ◽  
...  

2021 ◽  
Author(s):  
Yuanyuan Hu ◽  
Wenxuan Ji ◽  
Jinjuan Qiao ◽  
Heng Li ◽  
Yun Zhang ◽  
...  

Abstract Although carbon dots (CDs) as fluorescent sensors have been widely exploited, multi-component detection using CDs without tedious surface modification is always a challenging task. Here, two kinds of nitrogen-doped CDs (NCD-m and NCD-o) based on soluble starch (SS) as carbon source were prepared through one-pot hydrothermal process using m-phenylenediamine and o-phenylenediamine as nitrogenous dopant respectively. Through fluorescence “on-off” mechanism of CDs, NCD-m and NCD-o could be used as a fluorescence sensor for detection of Fe 3+ and Ag + with LOD of 0.25 and 0.5 μM, respectively. Additionally, NCD-m could be used for indirect detection of ascorbic acid (AA) with LOD of 5 μM. Moreover, fluorescence intensity of NCD-m also exhibited the sensitivity to pH change from 2 to 13. More importantly, Both NCD-m and NCD-o had potential application for analysis of complicated real samples such as tap water, Vitamin C tablets and orange juice. Ultimately, the small size of NCD-m could contribute to reinforcing intracellular endocytosis, which allowed them to be used for bacteria imaging.


Luminescence ◽  
2021 ◽  
Author(s):  
Yaning Qin ◽  
Zhaoyue Yan ◽  
Rui Liu ◽  
Chaojie Qu ◽  
Haichen Mao ◽  
...  

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