A dual-emission ratiometric fluorescent nanoprobe based on silicon nanoparticles and carbon dots for efficient detection of Cu(II)

CrystEngComm ◽  
2021 ◽  
Author(s):  
Huiyuan Kou ◽  
Shujie Pang ◽  
Boyu Yang ◽  
Mao Wang ◽  
Juan Ding ◽  
...  
Keyword(s):  
Carbon Dots ◽  
Silicon Nanoparticles ◽  
Dual Emission ◽  
Emission Properties ◽  
Fluorescent Nanoprobe ◽  
Fluorescent Silicon Nanoparticles ◽  
Efficient Detection ◽  
New Type

In this work, a new type of ratiometric fluorescent nanoprobe with dual-emission properties is designed and constructed. The dual-emission nanoprobe is prepared from fluorescent silicon nanoparticles (Si NPs) and carbon...

Interparticle distance as a key factor for controlling the dual-emission properties of carbon dots

2020 ◽  
Vol 22 (36) ◽  
pp. 20227-20237
Author(s):  
Hyo Jeong Yoo ◽  
Byeong Eun Kwak ◽  
Do Hyun Kim
Keyword(s):  
Carbon Dots ◽  
Interparticle Distance ◽  
Excitation Source ◽  
Dual Emission ◽  
Emission Properties ◽  
Emission Color ◽  
Key Factor

The dominant emission color of multi-color emissive carbon dots under a single excitation source is governed by the interparticle distance.

A Novel Nitrogen-Doped Dual-Emission Carbon Dots as an Effective Fluorescent Probe for Ratiometric Detection Dopamine

NANO ◽  
2021 ◽  
pp. 2150030
Author(s):  
Jianliang Bai ◽  
Xu Chen ◽  
Guojun Yuan ◽  
Lu Zhang ◽  
Zhujun Huang ◽  
...  
Keyword(s):  
Carbon Dots ◽  
Uv Light ◽  
Dual Emission ◽  
Nitrogen Doped ◽  
Ratiometric Detection ◽  
Orange Fluorescence ◽  
New Type ◽  
Doped Carbon Dots ◽  
Nitrogen Doped Carbon ◽  
Fluorescent Carbon Dots

Fluorescent carbon dots (CDs) as a new-type kind of zero-venami material have attracted growing interest. Herein, we developed a novel and convenient method to prepare dual emission nitrogen-doped carbon dots (N-CDs). Under ultraviolet (UV) light, N-CDs show blue and orange fluorescence centered at 435[Formula: see text]nm and 595[Formula: see text]nm, respectively. Because the two emission peaks of N-CDs exhibit different sensitivity to dopamine (DA), the N-CDs can serve as ratiometric fluorescent probes for DA measurement. The ratio ([Formula: see text]/[Formula: see text]) exhibits good linear relationship with DA concentration within the scope of 45–80[Formula: see text][Formula: see text]M. The quenching mechanism of N-CDs toward DA is also proposed, and it is suggested that the quenching may start because by the electrostatic interaction between N-CDs and DA.

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.

Ratiometric Dual-emission of Rhodamine-B Grafted Carbon Dots for Full-range Solvent Components Detection

2021 ◽  
pp. 338743
Author(s):  
Qian He ◽  
Shengyi Zhuang ◽  
Yuxiu Yu ◽  
Haojie Li ◽  
Yaodong Liu
Keyword(s):  
Rhodamine B ◽  
Carbon Dots ◽  
Full Range ◽  
Dual Emission

Exploration of synthesizing fluorescent silicon nanoparticles and label-free detection of sulfadiazine sodium

Talanta ◽  
2020 ◽  
Vol 220 ◽  
pp. 121410
Author(s):  
Yunfeng Bai ◽  
Qian Su ◽  
Jimei Xiao ◽  
Feng Feng ◽  
Xiaoming Yang
Keyword(s):  
Silicon Nanoparticles ◽  
Label Free ◽  
Fluorescent Silicon Nanoparticles ◽  
Label Free Detection

Ratiometric target-triggered fluorescent silicon nanoparticles probe for quantitative visualization of tyrosinase activity

Talanta ◽  
2019 ◽  
Vol 197 ◽  
pp. 113-121 ◽  
Author(s):  
Yu-Zhu Ding ◽  
Wei-Feng Wang ◽  
Tian Chai ◽  
Yin Qiang ◽  
Yan-Ping Shi ◽  
...  
Keyword(s):  
Silicon Nanoparticles ◽  
Tyrosinase Activity ◽  
Fluorescent Silicon Nanoparticles ◽  
Quantitative Visualization
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