Ratiometric fluorescence and colorimetric dual-mode sensing platform based on carbon dots for detecting copper(II) ions and D-penicillamine

Author(s):  
Wei Zhang ◽  
Yu Zhang ◽  
Xin Liu ◽  
Yue Zhang ◽  
Yibing Liu ◽  
...  
The Analyst ◽  
2019 ◽  
Vol 144 (14) ◽  
pp. 4250-4257 ◽  
Author(s):  
Yuqing Chen ◽  
Yawen Lian ◽  
Mengna Huang ◽  
Lin Wei ◽  
Lehui Xiao

A fluorometric and colorimetric dual mode sensing platform based on hybridized carbon dots (Cdots) and gold–silver core–shell nanoparticles (Au@Ag NPs) has been established for the sensitive detection of trace Cu2+ ions in aqueous solution.


2020 ◽  
Vol 180 ◽  
pp. 108486 ◽  
Author(s):  
Lizhi Wang ◽  
Yang Liu ◽  
Zhouping Yang ◽  
Yanying Wang ◽  
Hanbing Rao ◽  
...  

Nanomaterials ◽  
2021 ◽  
Vol 11 (5) ◽  
pp. 1232
Author(s):  
Jiaqing Guo ◽  
Aikun Liu ◽  
Yutian Zeng ◽  
Haojie Cai ◽  
Shuai Ye ◽  
...  

The use of carbon dots (CDs) with dual emission based on ratiometric fluorescence has been attracting attention in recent times for more accurate ion detection since they help avoid interference from background noise, probe concentration, and complexity. Herein, novel dual-emission nitrogen-doped CDs (NCDs) were prepared by a simple method for Cu2+ and ClO- detection. The NCDs showed excellent anti-interference ability and selectivity for different emissions. In addition, a good linear relationship was observed between the fluorescence intensity (FI) of the NCD solutions in different emissions with Cu2+ (0–90 μM) and ClO- (0–75 μM). The limits of both Cu2+ detection and ClO- were very low, at 17.7 and 11.6 nM, respectively. The NCDs developed herein also showed a good recovery rate in water for Cu2+ and ClO− detection. Hence, they are expected to have a more extensive application prospect in real samples.


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