Visual and fluorescent detection of mercury ions using a dual-emission ratiometric fluorescence nanomixture of carbon dots cooperating with gold nanoclusters

2019 ◽  
Vol 223 ◽  
pp. 117364 ◽  
Author(s):  
Jinghan Liu ◽  
Hanyue Xue ◽  
Yingnan Liu ◽  
Tong Bu ◽  
Pei Jia ◽  
...  
Keyword(s):  
Carbon Dots ◽  
Gold Nanoclusters ◽  
Fluorescent Detection ◽  
Mercury Ions ◽  
Ratiometric Fluorescence ◽  
Dual Emission

Visual and ratiometric fluorescence detection of Hg2+ based on a dual-emission carbon dots-gold nanoclusters nanohybrid

2018 ◽  
Vol 259 ◽  
pp. 1082-1089 ◽  
Author(s):  
Huizhi Xie ◽  
Jing Dong ◽  
Junling Duan ◽  
Geoffrey I.N. Waterhouse ◽  
Juying Hou ◽  
...  
Keyword(s):  
Fluorescence Detection ◽  
Carbon Dots ◽  
Gold Nanoclusters ◽  
Ratiometric Fluorescence ◽  
Dual Emission

A colorimetric paper sensor for visual detection of mercury ions constructed with dual-emission carbon dots

2018 ◽  
Vol 42 (19) ◽  
pp. 15671-15677 ◽  
Author(s):  
Yifan Wang ◽  
Liang Yang ◽  
Bianhua Liu ◽  
Shaoming Yu ◽  
Changlong Jiang
Keyword(s):  
Carbon Dots ◽  
Visual Detection ◽  
Mercury Ions ◽  
Ratiometric Fluorescence ◽  
Blue Fluorescence ◽  
Internal Reference ◽  
Dual Emission ◽  
Paper Sensor ◽  
Fluorescent Carbon Dots ◽  
Fluorescent Carbon

A ratiometric fluorescence nanosensor has been developed by mixing blue fluorescent carbon dots and red fluorescent carbon dots, where the blue fluorescence can be selectively quenched by Hg2+, while the red fluorescence is an internal reference.

scholarly journals Noval Dual-Emission Fluorescence Carbon Dots as a Ratiometric Probe for Cu2+ and ClO− Detection

Nanomaterials ◽  
2021 ◽  
Vol 11 (5) ◽  
pp. 1232
Author(s):  
Jiaqing Guo ◽  
Aikun Liu ◽  
Yutian Zeng ◽  
Haojie Cai ◽  
Shuai Ye ◽  
...  
Keyword(s):  
Carbon Dots ◽  
Background Noise ◽  
Good Recovery ◽  
Ratiometric Fluorescence ◽  
Dual Emission ◽  
Simple Method ◽  
Real Samples ◽  
Nitrogen Doped ◽  
Probe Concentration ◽  
Ratiometric Probe

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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