One-step rapid synthesis of fluorescent silicon nanodots for a hydrogen peroxide-related sensitive and versatile assay based on the inner filter effect

The Analyst ◽  
2019 ◽  
Vol 144 (13) ◽  
pp. 4006-4012 ◽  
Author(s):  
Haoyu Chen ◽  
Li Wu ◽  
Yuqi Wan ◽  
Lulu Huang ◽  
Ningxing Li ◽  
...  
Keyword(s):  
Hydrogen Peroxide ◽  
Synthesis Method ◽  
Inner Filter Effect ◽  
Rapid Synthesis ◽  
Biochemical Sensor ◽  
Filter Effect ◽  
New Synthesis ◽  
One Step

This work presents a new synthesis method of fluorescent SiNDs which was further applied in the construction of hydrogen peroxide-related sensitive and versatile biochemical sensor.

Facile, green and clean one-step synthesis of carbon dots from wool: Application as a sensor for glyphosate detection based on the inner filter effect

Talanta ◽  
2016 ◽  
Vol 160 ◽  
pp. 268-275 ◽  
Author(s):  
Long Wang ◽  
Yidan Bi ◽  
Juan Hou ◽  
Huiyu Li ◽  
Yuan Xu ◽  
...  
Keyword(s):  
Carbon Dots ◽  
Inner Filter Effect ◽  
Filter Effect ◽  
One Step

Glucose Oxidase Decorated Fluorescent Metal-Organic Frameworks as Biomimetic Cascade Nanozymes for Glucose Detection Through Inner Filter Effect

The Analyst ◽  
2021 ◽  
Author(s):  
Xiaohong Li ◽  
Wenjie Jing ◽  
Fanbo Kong ◽  
Sijia Tian ◽  
Mincong Yu ◽  
...  
Keyword(s):  
Glucose Oxidase ◽  
Metal Organic Frameworks ◽  
Inner Filter Effect ◽  
Glucose Detection ◽  
Peroxidase Mimic ◽  
Filter Effect ◽  
Metal Organic ◽  
One Step ◽  
Loading Amount

The metal-organic frameworks (MOFs) as a peroxidase mimic was applied for integrating glucose oxidase (GOx) to achieve one-step glucose detection. However, limited by the loading amount of GOx, the performance...

Nitrogen-doped carbon dots as fluorescent probe for detection of curcumin based on the inner filter effect

RSC Advances ◽  
2015 ◽  
Vol 5 (115) ◽  
pp. 95054-95060 ◽  
Author(s):  
Qingyan Zhang ◽  
Caihong Zhang ◽  
Zengbo Li ◽  
Jinyin Ge ◽  
Chenzhong Li ◽  
...  
Keyword(s):  
Citric Acid ◽  
Carbon Source ◽  
Nitrogen Source ◽  
Carbon Dots ◽  
Inner Filter Effect ◽  
Nitrogen Doped ◽  
Filter Effect ◽  
One Step ◽  
Doped Carbon Dots ◽  
Nitrogen Doped Carbon

A facile, economical and green one-step hydrothermal method for N-doped CDs was presented by using citric acid as carbon source and urea as nitrogen source. The fluorescence of N-doped CDs quenched dramatically from curcumin via inner filter effect.

Facile one-step synthesis of highly luminescent N-doped carbon dots as an efficient fluorescent probe for chromium(vi) detection based on the inner filter effect

2018 ◽  
Vol 42 (5) ◽  
pp. 3729-3735 ◽  
Author(s):  
Haitao Wang ◽  
Shan Liu ◽  
Yisha Xie ◽  
Jingran Bi ◽  
Yao Li ◽  
...  
Keyword(s):  
Fluorescent Probe ◽  
Carbon Dots ◽  
Inner Filter Effect ◽  
Fluorescence Assay ◽  
Assay System ◽  
Label Free ◽  
Chromium Vi ◽  
Filter Effect ◽  
One Step ◽  
Doped Carbon Dots

Label-free fluorescence assay system is designed for Cr(iv) detection.

Rapid synthesis and bioactivities of 3-(nitromethylene)indolin-2-one analogues

2010 ◽  
Vol 64 (5) ◽  
Author(s):  
Gang Chen ◽  
Xiao-Jiang Hao ◽  
Qian-Yun Sun ◽  
Jian Ding
Keyword(s):  
Lung Cancer ◽  
Pc12 Cells ◽  
Synthesis Method ◽  
Base Catalyst ◽  
Henry Reaction ◽  
Lung Cancer Cell ◽  
Chromatographic Purification ◽  
Rapid Synthesis ◽  
New Synthesis ◽  
Induced Apoptosis

AbstractA new synthesis method of 3-(nitromethylene)indolin-2-one analogues is described, using the Henry reaction of isatin and N-substituted isatins with nitromethane followed by dehydration of the nitroaldol adduct with mesyl chloride. The use of diethylamine (rather than DBU) as the base catalyst in a solvent-free Henry reaction gave the nitroaldol adduct in sufficient purity as to allow its direct dehydration to nitroalkene. Overall yields for this two-step synthesis are satisfactory (typically 50–77 % after chromatographic purification). 3-(Nitromethylene)indolin-2-one analogues are valued protective agents against H2O2-induced apoptosis using PC12 cells, and for their cytotoxicity against the A549 and P388 lung cancer cell lines. One compound, (E)-1-benzyl-3-(nitromethylene)indolin-2-one (VIII), exhibited potent activity in the latter assay.

scholarly journals Characterisation of hexagonal birnessite with a new and rapid synthesis method—comparison with traditional synthesis

RSC Advances ◽  
2019 ◽  
Vol 9 (45) ◽  
pp. 25951-25956 ◽  
Author(s):  
Zhangjie Qin ◽  
Xinmin Chen ◽  
Nanqi Ouyang ◽  
Shuai Lan ◽  
Guanjie Jiang ◽  
...  
Keyword(s):  
Low Cost ◽  
Synthesis Method ◽  
Method Comparison ◽  
Physicochemical Characteristics ◽  
Rapid Synthesis ◽  
New Synthesis ◽  
Cost Characteristics

The new synthesis method of birnessite with rapid, simple, and low cost characteristics proposed in this work can be applied to industry products. Bir-H2O2 have a better physicochemical characteristics than Bir-HCl using traditional synthesis.

Bacterium-Derived Carbon Dots as a Novel “Turn-On-On-Off-On” Sensor for Cr(VI) and 4-Nitrophenol Detection Based on Inner Filter Effect Mechanism

NANO ◽  
2020 ◽  
Vol 15 (06) ◽  
pp. 2050074
Author(s):  
Suping Wang ◽  
Yujiao Tu ◽  
Kunhao Qin ◽  
Xiaotian Yuan ◽  
Wei Chen ◽  
...  
Keyword(s):  
Environmental Pollutants ◽  
Inner Filter Effect ◽  
Environmental Pollutant ◽  
Turn On ◽  
Chromium Vi ◽  
Filter Effect ◽  
Novel Approach ◽  
Fluorescence Nanoprobe ◽  
One Step ◽  
Sensitive Sensor

Phenolic compounds, especially 4-nitrophenol (4-NP), and chromium (VI) are highly toxic environmental pollutants. Thus, it is significantly important to establish a rapid and sensitive sensor for 4-NP and Cr(VI) monitoring in environment. In this paper, a novel approach has been adopted where E. coli-derived CDs (CDs-WT) prepared by one step hydrothermal method previously and sensitized by ampicillin (turn-on) were used as fluorescence nanoprobe (CDs-WT-Amp) for 4-NP and Cr(VI) determination based on the inner filter effect quenching mechanism (turn-off). Then, the quenching fluorescence was reversed by addition of ampicillin (turn-on). The linear ranges of 4-NP and Cr(VI) detection were 0–50[Formula: see text][Formula: see text]M and 0–25[Formula: see text][Formula: see text]M, with the limits of detection 88.89[Formula: see text]nM and 64.75[Formula: see text]nM, respectively. The “turn-on-on-off-on” fluorescent nanosensor system was successfully used to determine Cr(VI) and 4-NP in water with satisfactory results. It shows that the “turn-on-off-on” nanoprobe has great promising potential for application to environmental pollutant detection.

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