Exploring the tunable excitation of QDs to maximize the overlap with the absorber for inner filter effect-based phosphorescence sensing of alkaline phosphatase

Nanoscale ◽  
2017 ◽  
Vol 9 (40) ◽  
pp. 15606-15611 ◽  
Author(s):  
Jinyi Zhang ◽  
Xiaomei Lu ◽  
Yu Lei ◽  
Xiandeng Hou ◽  
Peng Wu
Keyword(s):  
Quantum Dots ◽  
Alkaline Phosphatase ◽  
Inner Filter Effect ◽  
Filter Effect ◽  
Mn Doped

The tunable excitation of quantum dots was explored to screen the best inner filter effect pair for alkaline phosphatase sensing, yielding the best sensitivity with phosphorescent Mn-doped ZnS QDs.

Phosphorescent inner filter effect-based sensing of xanthine oxidase and its inhibitors with Mn-doped ZnS quantum dots

Nanoscale ◽  
2018 ◽  
Vol 10 (18) ◽  
pp. 8477-8482 ◽  
Author(s):  
Dandan Tang ◽  
Jinyi Zhang ◽  
Rongxin Zhou ◽  
Ya-Ni Xie ◽  
Xiandeng Hou ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Uric Acid ◽  
Xanthine Oxidase ◽  
Inner Filter Effect ◽  
Filter Effect ◽  
Spectral Overlap ◽  
Mn Doped ◽  
Enzymatic Product

Large bandgap semiconductor ZnS QDs (Mn-doped) were explored for inner filter effect-based sensing of xanthine oxidase and its inhibitors, due to the maximum spectral overlap between the absorption of uric acid (the enzymatic product of xanthine oxidase) and the excitation of Mn-doped ZnS QDs.

Water-soluble MoS2 quantum dots for facile and sensitive fluorescence sensing of alkaline phosphatase activity in serum and live cells based on the inner filter effect

Nanoscale ◽  
2018 ◽  
Vol 10 (45) ◽  
pp. 21298-21306 ◽  
Author(s):  
Yaping Zhong ◽  
Fengfeng Xue ◽  
Peng Wei ◽  
Ruohan Li ◽  
Chunyan Cao ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Alkaline Phosphatase ◽  
Phosphatase Activity ◽  
Alkaline Phosphatase Activity ◽  
Inner Filter Effect ◽  
Water Soluble ◽  
Live Cells ◽  
Fluorescence Sensing ◽  
Filter Effect ◽  
Sensitive Method

We report a facile and sensitive method for the detection of alkaline phosphatase (ALP) activity in serum and live cells using molybdenum disulfide quantum dots (MoS2 QDs) 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...

Dual mode detection of amifostine based on gold nanoparticles and sulfanilic acid functionalized graphene quantum dots

2018 ◽  
Vol 42 (14) ◽  
pp. 12126-12133 ◽  
Author(s):  
Ning Li ◽  
Weidan Na ◽  
Hua Liu ◽  
Xingguang Su
Keyword(s):  
Quantum Dots ◽  
Gold Nanoparticles ◽  
Fluorescence Detection ◽  
Graphene Quantum Dots ◽  
Inner Filter Effect ◽  
Sulfanilic Acid ◽  
Functionalized Graphene ◽  
Dual Mode ◽  
Mode Detection ◽  
Filter Effect

Visual and fluorescence detection of amifostine based on the inner filter effect of gold nanoparticles on sulfanilic acid functionalized graphene quantum dots.

Glutathione Regulated Inner Filter Effect of MnO2Nanosheets on Boron Nitride Quantum Dots for Sensitive Assay

2019 ◽  
Vol 91 (9) ◽  
pp. 5762-5767 ◽  
Author(s):  
Chao Peng ◽  
Huanhuan Xing ◽  
Xiushuang Fan ◽  
Yuan Xue ◽  
Jing Li ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Boron Nitride ◽  
Inner Filter Effect ◽  
Sensitive Assay ◽  
Filter Effect

UV-emitting polyelectrolyte-modified MoS2 quantum dots for selective determination of nitrophenol in water samples based on inner filter effect

2020 ◽  
Vol 98 (5) ◽  
pp. 222-227
Author(s):  
Keke Ning ◽  
Guoqiang Xiang ◽  
Cuicui Wang ◽  
Jingxing Wang ◽  
Xiaohong Qiao ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Water Samples ◽  
Sodium Molybdate ◽  
Inner Filter Effect ◽  
Pond Water ◽  
Emission Peak ◽  
Selective Determination ◽  
Uv Emission ◽  
Filter Effect

In this work, poly(sodium 4-styrenesulfonate) (PSS) modified molybdenum disulfide quantum dots (MoS2-PSS QDs) were synthesized via a simple hydrothermal method using l-cysteine and anhydrous sodium molybdate as precursors and PSS as a modification reagent, and a selective and sensitive fluorescent sensing method for the determination of p-nitrophenol (p-NP) based on their UV emission was developed. The obtained MoS2-PSS QDs have an obvious UV emission peak (390 nm) with quantum yield of 5.13%. The strong absorption peak of p-NP at 400 nm has large spectral overlap with the UV emission peak (390 nm) of MoS2-PSS QDs. Because of this p-NP absorption, the fluorescence of MoS2-PSS QDs at 390 nm is quenched with the introduction of p-NP via the inner filter effect (IFE) and the decreased fluorescence intensity was linearly proportional to the p-NP concentration in the range of 1–20 μmol/L, leading to a detection limit of 0.13 μmol/L for p-NP. The MoS2 QDs-based fluorescent probe for p-NP is sensitive and selective and was successfully applied in the determination of p-NP in the pond water samples with satisfactory results.

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