Aptamer-mediated N/Ce-doped carbon dots as a fluorescent and resonance Rayleigh scattering dual mode probe for arsenic(III)

2019 ◽  
Vol 186 (9) ◽  
Author(s):  
Zhihao Zhang ◽  
Jiao Li ◽  
Xiyin Wang ◽  
Aihui Liang ◽  
Zhiliang Jiang
Keyword(s):  
Carbon Dots ◽  
Rayleigh Scattering ◽  
Resonance Rayleigh Scattering ◽  
Dual Mode ◽  
Doped Carbon Dots

scholarly journals Aptamer Turn-On SERS/RRS/Fluorescence Tri-mode Platform for Ultra-trace Urea Determination Using Fe/N-Doped Carbon Dots

2021 ◽  
Vol 9 ◽  
Author(s):  
Chongning Li ◽  
Jiao Li ◽  
Aihui Liang ◽  
Guiqing Wen ◽  
Zhiliang Jiang
Keyword(s):  
Carbon Dots ◽  
Rayleigh Scattering ◽  
High Sensitivity ◽  
Resonance Rayleigh Scattering ◽  
Indicator Reaction ◽  
Turn On ◽  
Surface Enhanced Raman ◽  
Ultra Trace ◽  
Doped Carbon Dots

Sensitive and selective methods for the determination of urea in samples such as dairy products are important for quality control and health applications. Using ammonium ferric citrate as a precursor, Fe/N-codoped carbon dots (CDFeN) were prepared by a hydrothermal procedure and characterized in detail. CDFeN strongly catalyzes the oxidation of 3,3′,5,5′-tetramethylbenzidine (TMB) by H2O2 to turn on an indicator molecular reaction, forming an oxidized tetramethylbenzidine (TMBox) probe with surface-enhanced Raman scattering, resonance Rayleigh scattering, and fluorescence (SERS, RRS, and FL) signals at 1,598 cm−1, 370 nm, and 405 nm, respectively. The urea aptamer (Apt) can turn off the indicator reaction to reduce the tri-signals, and the addition of urea turns on the indicator reaction to linearly enhance the SERS/RRS/FL intensity. Thus, a novel Apt turn-on tri-mode method was developed for the assay determination of ultra-trace urea with high sensitivity, good selectivity, and accuracy. Trace adenosine triphosphate and estradiol can also be determined by the Apt-CDFeN catalytic analytical platform.

A novel N/Au co-doped carbon dot probe for continuous detection of silicate and phosphate by resonance Rayleigh scattering

The Analyst ◽  
2019 ◽  
Vol 144 (17) ◽  
pp. 5090-5097 ◽  
Author(s):  
Jiao Li ◽  
Chongning Li ◽  
Zhihao Zhang ◽  
Xiyin Wang ◽  
Aihui Liang ◽  
...  
Keyword(s):  
Carbon Dots ◽  
Rayleigh Scattering ◽  
Carbon Nanomaterials ◽  
Resonance Rayleigh Scattering ◽  
Dot Probe ◽  
Carbon Dot ◽  
Doped Carbon Dots ◽  
Co Doped

Co-doped carbon dots are new multifunctional carbon nanomaterials.

scholarly journals Spectrofluorimetric Determination of Hydrochlorothiazide by a Carbon Dots-Based Probe via Inner Filtering Effect and Resonance Rayleigh Scattering

2022 ◽  
Author(s):  
Ali Ghafarloo ◽  
Reza Sabzi ◽  
Naser Samadi ◽  
Hamed Hamishehkar
Keyword(s):  
Carbon Dots ◽  
Rayleigh Scattering ◽  
Limit Of Detection ◽  
Fluorescent Sensor ◽  
Emission Spectra ◽  
Cost Effective ◽  
Inner Filter Effect ◽  
Resonance Rayleigh Scattering ◽  
Excitation Spectra ◽  
One Pot

Synthesis of carbon dots (CDs) from natural resources not only enables green synthesis and production of environmentally friendly materials, but also provides a cost-effective probe as a fluorescence nanosensor. The proposed sensor introduces a unique one-pot hydrothermal CDs synthesis from alfalfa leaves, which is promising for sensing hydrochlorothiazide (HCTZ) via inner filter effect (IFE) and resonance Rayleigh scattering (RRS). The as-prepared CDs had wide emission spectra, excitation-dependent emission, high solubility, high stability, and visible fluorescence light with a quantum yield of up to 11%. The absorption of HCTZ overlapped with the excitation spectra of CDs. Therefore, CDs represented excellent quenching due to IFE when HCTZ was gradually added. Furthermore, this fluorescent sensor was successfully used to quantify HCTZ in the linear ranges (0.17-2.50 μg mL-1) with the limit of detection of 0.11 μg mL-1. The sensing system was simple as no surface functionalization was required for CDs, leading to less laborious steps and more cost-effective synthesis. The reaction time was short, i.e., less than 2 min, indicating a simple approach for rapid analysis of HCTZ. By optimizing conditions, successful measurements were carried out on pharmaceutical tablets.

Red Emission B, N, S-co-Doped Carbon Dots for Colorimetric and Fluorescent Dual Mode Detection of Fe3+ Ions in Complex Biological Fluids and Living Cells

2017 ◽  
Vol 9 (14) ◽  
pp. 12663-12672 ◽  
Author(s):  
Yinghua Liu ◽  
Wenxiu Duan ◽  
Wei Song ◽  
Juanjuan Liu ◽  
Cuiling Ren ◽  
...  
Keyword(s):  
Carbon Dots ◽  
Biological Fluids ◽  
Living Cells ◽  
Dual Mode ◽  
Red Emission ◽  
Mode Detection ◽  
Doped Carbon Dots ◽  
Co Doped

A new strategy for determination of trace PO43− using CNDAu as resonance Rayleigh scattering and fluorescence dual-mode probe

2020 ◽  
Vol 157 ◽  
pp. 104892 ◽  
Author(s):  
Zhenghong Wang ◽  
Chongning Li ◽  
Aihui Liang ◽  
Zhiliang Jiang
Keyword(s):  
Rayleigh Scattering ◽  
Resonance Rayleigh Scattering ◽  
Dual Mode ◽  
New Strategy
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