Facile and green synthesis of fluorescent carbon dots from onion waste and their potential applications as sensor and multicolour imaging agents

RSC Advances ◽  
2016 ◽  
Vol 6 (34) ◽  
pp. 28633-28639 ◽  
Author(s):  
Rajkumar Bandi ◽  
Bhagavanth Reddy Gangapuram ◽  
Ramakrishna Dadigala ◽  
Ravikumar Eslavath ◽  
Surya S. Singh ◽  
...  

A novel, green approach for the synthesis of highly fluorescent carbon dots with 28% quantum yield by utilizing onion waste as precursor and employing a simple autoclave is reported, and applied them as Fe3+ sensor & multi-coloured imaging agents.

2016 ◽  
Vol 40 (2) ◽  
pp. 1698-1703 ◽  
Author(s):  
Mingyue Xue ◽  
Zhihua Zhan ◽  
Mengbing Zou ◽  
Liangliang Zhang ◽  
Shulin Zhao

Fluorescent carbon dots derived from peanut shells were prepared via a pyrolysis approach and used for living cell imaging.


2014 ◽  
Vol 25 (31) ◽  
pp. 315702 ◽  
Author(s):  
Fengyi Du ◽  
Miaomiao Zhang ◽  
Xiaofeng Li ◽  
Jianan Li ◽  
Xinyi Jiang ◽  
...  

Nanomaterials ◽  
2021 ◽  
Vol 12 (1) ◽  
pp. 66
Author(s):  
Hweiyan Tsai ◽  
Kaiying Chang ◽  
Wanshing Lee ◽  
C. Bor Fuh

Fluorescent carbon dots with blue, green, and red emissions were rapidly prepared from modified pine needles through microwave irradiation in a one-pot reaction. The fluorescence intensity and emission versatility for a carbon source were experimentally optimized. The reaction times were under 10 min and the reaction temperatures were lower than 220 °C. Potential applications of magnetic fluorescence-linked immunoassays of carcinoembryonic antigen (CEA) and tumor necrosis factor-alpha (TNF-α) were presented. The detection limits for CEA and TNF-α (3.1 and 2.8 pg mL−1, respectively) are lower than those presented in other reports, whereas the linear ranges for CEA and TNF-α (9 pg mL−1 to 18 ng mL−1 and 8.5 pg mL−1 to 17 ng mL−1, respectively) are wider than those presented in other reports. Magnetic immunoassays with fluorescent CDs prepared from pine needles can enable rapid, sensitive, and selective detections for biochemical analysis.


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