New detection method for nucleoside triphosphates based on carbon dots: The distance-dependent singlet oxygen trapping

2018 ◽  
Vol 1031 ◽  
pp. 145-151 ◽  
Author(s):  
Ying Ding ◽  
Qingyan Jia ◽  
Yongmei Wen ◽  
Weimin Liu ◽  
Jiechao Ge ◽  
...  
Keyword(s):  
Singlet Oxygen ◽  
Carbon Dots ◽  
Detection Method ◽  
Nucleoside Triphosphates ◽  
Oxygen Trapping

Reaction of Cyclooctenes with Singlet Oxygen. Trapping of a Perepoxide Intermediate

1995 ◽  
Vol 117 (29) ◽  
pp. 7611-7618 ◽  
Author(s):  
Thomas H. W. Poon ◽  
Kenneth Pringle ◽  
Christopher S. Foote
Keyword(s):  
Singlet Oxygen ◽  
Oxygen Trapping

scholarly journals Detection of Melamine Based on the Fluorescence Changes of Nitrogen-Doped Carbon Dots

2021 ◽  
Vol 2021 ◽  
pp. 1-9
Author(s):  
Wenzhi Yin ◽  
Chaoqun Ma ◽  
Tuo Zhu ◽  
Jiao Gu ◽  
Chun Zhu ◽  
...  
Keyword(s):  
Carbon Dots ◽  
Detection Method ◽  
Limit Of Detection ◽  
High Sensitivity ◽  
Mercury Ions ◽  
Measuring Range ◽  
Nitrogen Doped ◽  
One Step ◽  
Doped Carbon Dots ◽  
Nitrogen Doped Carbon

In order to determine the concentration of melamine, nitrogen-doped carbon dots (NCDs) were synthesized in one step as a fluorescent probe. Uric acid and diethylenetriamine were used as carbon source and nitrogen source, respectively. The experimental results showed that the fluorescence of NCDs can be quenched by mercury ions (Hg2+). Due to the strong coordination affinity between the carbon-nitrogen heterocyclic of melamine and Hg2+, part of Hg2+ coordinated with melamine when melamine was mixed with Hg2+. Then, the fluorescence of the added NCDs was quenched by the remaining Hg2+. Therefore, the concentration of melamine could be determined. The results show that the method has high sensitivity in wide measuring range that the linear ranges are 50–400 μg/L and 800–2500 μg/L, and the R2 is 0.997 and 0.988, respectively, with the limit of detection (LOD) of 21.76 μg/L. The NCDs are easy to fabricate, and the detection method is easy to implement. In this study, a new method for melamine detection was established, and the proposed method for melamine detection can provide some insights for food safety detection.

scholarly journals Construction of Photoelectrochemical DNA Biosensors Based on TiO2@Carbon Dots@Black Phosphorous Quantum Dots

Micromachines ◽  
2021 ◽  
Vol 12 (12) ◽  
pp. 1523
Author(s):  
Kai Song ◽  
Jianwei Lin ◽  
Yafeng Zhuang ◽  
Zhizhong Han ◽  
Jinghua Chen
Keyword(s):  
Quantum Dots ◽  
Carbon Dots ◽  
Detection Method ◽  
Black Phosphorus ◽  
Raw Material ◽  
Dna Biosensors ◽  
Detection Range ◽  
Transmission Electron ◽  
Target Dna ◽  
Black Phosphorus Quantum Dots

In this work, carbon dots (CDs) and black phosphorus quantum dots (BPQDs) were used to decorate titanium dioxide to enhance the photoelectrochemical (PEC) properties of the nanocomposites (TiO2@CDs@BPQDs), and the modified nanocomposites were used to sensitively detect DNA. We used the hydrothermal method and citric acid as a raw material to prepare CDs with good dispersion and strong fluorescence properties. BPQDs with a uniform particle size were prepared from black phosphorus crystals. The nanocomposites were characterized by fluorescence spectroscopy, UV-Vis absorption spectroscopy, Fourier transform infrared spectroscopy (FTIR) and transmission electron microscopy (TEM). The preparation method of the working electrode was explored, the detection conditions were optimized, and the sensitive detection of target DNA was achieved. The results demonstrate that CDs and BPQDs with good optical properties were successfully prepared, and they were successfully combined with TiO2 to improve the PEC performance of TiO2@CDs@BPQDs. The TiO2-based PEC DNA detection method was constructed with a detection limit of 8.39 nM. The constructed detection method has many advantages, including good sensitivity, a wide detection range, and good specificity. This work provides a promising PEC strategy for the detection of other biomolecules.

Riboflavin-Based Carbon Dots with High Singlet Oxygen Generation for Photodynamic Therapy

2021 ◽  
Author(s):  
Juan Yue ◽  
Li Li ◽  
Chenyu Jiang ◽  
Qian Mei ◽  
Wen-Fei Dong ◽  
...  
Keyword(s):  
Photodynamic Therapy ◽  
Singlet Oxygen ◽  
Effective Treatment ◽  
Carbon Dots ◽  
Oxygen Generation ◽  
Singlet Oxygen Generation

Photodynamic therapy, as an effective treatment for superficial tumors, has attracted more and more attention. The development of safe, biocompatible and in vivo photosensitive materials is helpful to promote photodynamic...

Confining Carbon Dots in Porous Wood: The Singlet Oxygen Enhancement Strategy for Photothermal Signal-Amplified Detection of Mn2+

2020 ◽  
Vol 8 (48) ◽  
pp. 17687-17696
Author(s):  
Junxia Su ◽  
Siyu Lu ◽  
Jun Hai ◽  
Kun Liang ◽  
Tianrong Li ◽  
...  
Keyword(s):  
Singlet Oxygen ◽  
Carbon Dots ◽  
Oxygen Enhancement

Sn4+ complexation with sulfonated-carbon dots in pursuit of enhanced fluorescence and singlet oxygen quantum yield

2020 ◽  
Vol 49 (21) ◽  
pp. 6950-6956
Author(s):  
Qinghua Luo ◽  
Haizhen Ding ◽  
Xiaolong Hu ◽  
Jiahui Xu ◽  
Anwar Sadat ◽  
...  
Keyword(s):  
Quantum Yield ◽  
Singlet Oxygen ◽  
Carbon Dots ◽  
Cross Linking ◽  
Enhanced Fluorescence

Cross-linking sulfonated carbon dots with Sn4+ can greatly enhance the fluorescence and lead to a higher singlet oxygen quantum yield.

Singlet oxygen trapping by DRD156 in micellar solutions

Life Sciences ◽  
2002 ◽  
Vol 72 (3) ◽  
pp. 321-328 ◽  
Author(s):  
Naoto Nishide ◽  
Norio Miyoshi
Keyword(s):  
Singlet Oxygen ◽  
Micellar Solutions ◽  
Oxygen Trapping
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