scholarly journals Sensitive and selective determination of tetracycline in milk based on sulfur quantum dot probes

RSC Advances ◽  
2021 ◽  
Vol 11 (37) ◽  
pp. 22960-22968
Author(s):  
Haixin Lu ◽  
Hanqiang Zhang ◽  
Yufei Li ◽  
Feng Gan
Keyword(s):  
Surface Modification ◽  
Quantum Dot ◽  
Fluorescent Probe ◽  
Inner Filter Effect ◽  
Static Quenching ◽  
Selective Determination ◽  
Quenching Effect ◽  
Filter Effect ◽  
First Time

A SQD-based fluorescent probe was applied to detect TC based on the inner filter effect (IFE) and static quenching effect (SQE) without any extra surface modification for the first time.

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.

N-doped carbon dots as a fluorescent probe for the sensitive and facile detection of carbamazepine based on the inner filter effect

2018 ◽  
Vol 42 (11) ◽  
pp. 8992-8997 ◽  
Author(s):  
Yujie Ma ◽  
Yueyue Song ◽  
Yunsu Ma ◽  
Fangdi Wei ◽  
Guanhong Xu ◽  
...  
Keyword(s):  
Fluorescent Probe ◽  
Carbon Dots ◽  
Inner Filter Effect ◽  
Filter Effect ◽  
Doped Carbon Dots

N-doped carbon dots are used as a fluorescent probe for the sensitive and facile determination of carbamazepine based on the inner filter effect.

scholarly journals Highly Luminescent and Biocompatible P and N Co-Doped Passivated Carbon Nanodots for the Sensitive and Selective Determination of Rifampicin Using the Inner Filter Effect

Materials ◽  
2020 ◽  
Vol 13 (10) ◽  
pp. 2275 ◽  
Author(s):  
Baraa Al-Hashimi ◽  
Heshu Sulaiman Rahman ◽  
Khalid Mohammad Omer
Keyword(s):  
Limit Of Detection ◽  
Low Cost ◽  
Fluorescence Emission ◽  
Inner Filter Effect ◽  
Single Step ◽  
Carbon Nanodots ◽  
Pharmaceutical Dosage Forms ◽  
Selective Determination ◽  
Filter Effect

The determination of rifampicin in pharmaceutical dosage forms using a rapid, sensitive, selective, biocompatible, and low-cost method is of vital importance in the pharmaceutical analysis field to ensure its concentration is within the effective range when administered. In this study, nitrogen-and-phosphorous-doped carbon nanodots (CNDs) were prepared using a single-step hydrothermal method with ciprofloxacin as the starting material. The CNDs showed a highly intense blue fluorescence emission centered at 450 nm, with a photoluminescence quantum yield of about 51%. Since the absorption of rifampicin was the same as the excitation spectrum of CNDs, inner filter effect (IFE) quenching occurred and it was used as a successful detection platform for the analysis of rifampicin in capsules. The detection platform showed a dynamic linear range from 1 to 100 μM (R2 = 0.9940) and the limit of detection was 0.06 μM (when S/N = 3). The average spike recovery percentage for rifampicin in the capsule samples was 100.53% (n = 5). Moreover, the sub-chronic cytotoxicity of CNDs was evaluated on healthy male mice (Balb/c) drenched with different amounts of CNDs (10 and 50 mg/kg). During this study period, no mortalities or toxicity signs were recorded in any of the experimental subjects. Based on the cytotoxicity experiment, the proposed nano-probe is considered safe and biocompatible.

Selective determination of acetone by carbon nanodots based on inner filter effect

2019 ◽  
Vol 216 ◽  
pp. 290-295 ◽  
Author(s):  
Liman Sai ◽  
Xingyang Wang ◽  
Quanhong Chang ◽  
Wangzhou Shi ◽  
Lei Huang
Keyword(s):  
Inner Filter Effect ◽  
Carbon Nanodots ◽  
Selective Determination ◽  
Filter Effect

Polyethyleneimine-functionalized carbon dots as a fluorescent probe for doxorubicin hydrochloride by an inner filter effect

2021 ◽  
Vol 112 ◽  
pp. 110743
Author(s):  
Min Yang ◽  
Yujia Yan ◽  
Enzhou Liu ◽  
Xiaoyun Hu ◽  
Hong Hao ◽  
...  
Keyword(s):  
Fluorescent Probe ◽  
Carbon Dots ◽  
Inner Filter Effect ◽  
Doxorubicin Hydrochloride ◽  
Filter Effect

Selective determination of Ag+ using Salecan derived nitrogen doped carbon dots as a fluorescent probe

2017 ◽  
Vol 77 ◽  
pp. 508-512 ◽  
Author(s):  
Junjian Li ◽  
Gancheng Zuo ◽  
Xiaoliang Qi ◽  
Wei Wei ◽  
Xiaohao Pan ◽  
...  
Keyword(s):  
Fluorescent Probe ◽  
Carbon Dots ◽  
Selective Determination ◽  
Nitrogen Doped ◽  
Doped Carbon Dots ◽  
Nitrogen Doped Carbon

scholarly journals A novel ratiometric fluorescent probe for the selective determination of HClO based on the ESIPT mechanism and its application in real samples

RSC Advances ◽  
2019 ◽  
Vol 9 (53) ◽  
pp. 30943-30951 ◽  
Author(s):  
Jingrui Li ◽  
Aijun Gong ◽  
Guoqing Shi ◽  
Chengwen Chai
Keyword(s):  
Fluorescent Probe ◽  
Real Samples ◽  
Selective Determination ◽  
Ratiometric Fluorescent Probe

Based on the ESIPT fluorescence mechanism, herein, a novel ratiometric fluorescent probe was designed and synthesized for the detection of HClO.

Sign in / Sign up

Export Citation Format

Share Document