Simple and sensitive fluorescence sensor for methotrexate detection based on the inner filter effect of N, S co-doped carbon quantum dots

2019 ◽  
Vol 1047 ◽  
pp. 179-187 ◽  
Author(s):  
Yanan Zhao ◽  
Shiying Zou ◽  
Danqun Huo ◽  
Changjun Hou ◽  
Mei Yang ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Inner Filter Effect ◽  
Carbon Quantum Dots ◽  
Fluorescence Sensor ◽  
Filter Effect ◽  
Co Doped

scholarly journals Carbon quantum dots as a fluorophore for “inner filter effect” detection of metronidazole in pharmaceutical preparations

RSC Advances ◽  
2019 ◽  
Vol 9 (65) ◽  
pp. 38174-38182 ◽  
Author(s):  
Jianghong Tang ◽  
Yaheng Zhang ◽  
Yuhai Liu ◽  
Dan Liu ◽  
Hengfei Qin ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Absorption Band ◽  
Hydrothermal Process ◽  
Pharmaceutical Preparations ◽  
Inner Filter Effect ◽  
Carbon Quantum Dots ◽  
Houttuynia Cordata ◽  
Filter Effect

CDs were prepared using Houttuynia cordata via hydrothermal process, the absorption band of MNZ can well overlap the excitation bands of CDs, a simple, rapid approach for detection of MNZ was established on the basis of IFE.

scholarly journals “Turn on” Fluorescence Sensor of Glutathione Based on Inner Filter Effect of Co-Doped Carbon Dot/Gold Nanoparticle Composites

2021 ◽  
Vol 23 (1) ◽  
pp. 190
Author(s):  
Thi-Hoa Le ◽  
Ji-Hyeon Kim ◽  
Sang-Joon Park
Keyword(s):  
Gold Nanoparticle ◽  
Fluorescence Intensity ◽  
Limit Of Detection ◽  
Inner Filter Effect ◽  
Fluorescence Sensor ◽  
Fluorescence Emission Spectrum ◽  
Nitrogen And Phosphorus ◽  
Carbon Dot ◽  
Filter Effect ◽  
Co Doped

Glutathione (GSH) is a thiol that plays a significant role in nutrient metabolism, antioxidant defense and the regulation of cellular events. GSH deficiency is related to variety of diseases, so it is useful to develop novel approaches for GSH evaluation and detection. In this study we used nitrogen and phosphorus co-doped carbon dot-gold nanoparticle (NPCD–AuNP) composites to fabricate a simple and selective fluorescence sensor for GSH detection. We employed the reductant potential of the nitrogen and phosphorus co-doped carbon dots (NPCDs) themselves to form AuNPs, and subsequently NPCD–AuNP composites from Au3+. The composites were characterized by using a range of spectroscopic and electron microscopic techniques, including electrophoretic light scattering and X-ray diffraction. The overlap of the fluorescence emission spectrum of NPCDs and the absorption spectrum of AuNPs resulted in an effective inner filter effect (IFE) in the composite material, leading to a quenching of the fluorescence intensity. In the presence of GSH, the fluorescence intensity of the composite was recovered, which increased proportionally to increasing the GSH concentration. In addition, our GSH sensing method showed good selectivity and sensing potential in human serum with a limit of detection of 0.1 µM and acceptable results.

Biomass-based quantum dots co-doped with sulfur and nitrogen for highly sensitive detection of thrombin and its inhibitor

2019 ◽  
Vol 43 (29) ◽  
pp. 11510-11516 ◽  
Author(s):  
Yuefang Hu ◽  
Jingjin Zhao ◽  
Xuefeng Li ◽  
Shulin Zhao
Keyword(s):  
Quantum Dots ◽  
Inner Filter Effect ◽  
Sensitive Detection ◽  
Filter Effect ◽  
Highly Sensitive ◽  
Highly Sensitive Detection ◽  
Co Doped

A biomass-based quantum dots co-doped with sulfur and nitrogen was prepared by using garlic and ginger as precursors, and used for the detection of thrombin and its inhibitor based on the inner filter effect (IFE).

Fluorometric discrimination of tyrosine isomers based on the inner filter effect of chiral Au nanoparticles on MoS2 quantum dots

2021 ◽  
Author(s):  
Qianqian Zhao ◽  
Datong Wu ◽  
Zhengzhi Yin ◽  
Wenrong Cai ◽  
Haifeng Zhou ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Au Nanoparticles ◽  
Inner Filter Effect ◽  
Filter Effect

A fluorescent chiral sensor is proposed based on the inner filter effect (IFE) of chiral Au nanoparticles (AuNPs) on MoS2 quantum dots (MoS2 QDs), which can be used for the...

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