Ratiometric fluorescence determination of the anthrax biomarker 2,6-dipicolinic acid using a Eu3+/Tb3+-doped nickel coordination polymer

2019 ◽  
Vol 43 (46) ◽  
pp. 18259-18267 ◽  
Author(s):  
Hang Lei ◽  
Cui-Xing Qi ◽  
Xuan-Bo Chen ◽  
Tian Zhang ◽  
Ling Xu ◽  
...  
Keyword(s):  
Coordination Polymer ◽  
Dipicolinic Acid ◽  
High Sensitivity ◽  
Fluorescence Sensor ◽  
Rapid Response ◽  
Ratiometric Fluorescence ◽  
Fluorescence Determination

Tb3+0.6/Eu3+0.4@Ni-BTC is a quantitative ratiometric fluorescence sensor for DPA detection with high sensitivity, anti-interference, rapid response and durability.

Ratiometric fluorescence detection of anthrax biomarker 2,6-dipicolinic acid using hetero MOF sensors through ligand regulation

2020 ◽  
Vol 8 (13) ◽  
pp. 4392-4400 ◽  
Author(s):  
Mei-Lin Shen ◽  
Bing Liu ◽  
Ling Xu ◽  
Huan Jiao
Keyword(s):  
Fluorescence Detection ◽  
Dipicolinic Acid ◽  
High Sensitivity ◽  
Rapid Response ◽  
Test Paper ◽  
Ratiometric Fluorescence ◽  
Fluorescence Sensors ◽  
Sensitivity And Selectivity ◽  
Ligand Regulation

Three hetero Eu/Tb-MOFs and their test paper are quantitative ratiometric fluorescence sensors to anthrax biomarker 2,6-dipicolinic acid with high sensitivity and selectivity, rapid response and convenience.

A quantitative ratiometric fluorescent Hddb-based MOF sensor and its on-site detection of the anthrax biomarker 2,6-dipicolinic acid

2020 ◽  
Vol 8 (48) ◽  
pp. 17325-17335
Author(s):  
Xuan-Bo Chen ◽  
Cui-Xing Qi ◽  
Yu-Bin Xu ◽  
Hong Li ◽  
Ling Xu ◽  
...  
Keyword(s):  
Dipicolinic Acid ◽  
High Sensitivity ◽  
Fluorescent Sensors ◽  
Rapid Response

Tb0.875Eu0.125-Hddb and its paper-based sensor are ratiometric fluorescent sensors for DPA with high sensitivity, selectivity, rapid response and durability.

Highly selective ratiometric fluorescence determination of Eu3+ ion based on (4E)-4-(2-phenyldiazenyl)-2-((E)-(2-aminoethylimino)methyl)phenol

2010 ◽  
Vol 30 (7) ◽  
pp. 929-933 ◽  
Author(s):  
Mohammad Reza Ganjali ◽  
Morteza Hosseini ◽  
Maryam Hariri ◽  
Parviz Norouzi ◽  
Ali Akbar Khandar ◽  
...  
Keyword(s):  
Ratiometric Fluorescence ◽  
Fluorescence Determination

scholarly journals A FRET-ICT Dual-Modulated Ratiometric Fluorescence Sensor for Monitoring and Bio-Imaging of Cellular Selenocysteine

Molecules ◽  
2020 ◽  
Vol 25 (21) ◽  
pp. 4999
Author(s):  
Zongcheng Wang ◽  
Chenhong Hao ◽  
Xiaofang Luo ◽  
Qiyao Wu ◽  
Chengliang Zhang ◽  
...  
Keyword(s):  
Real Time ◽  
Limit Of Detection ◽  
Resonance Energy Transfer ◽  
Resonance Energy ◽  
High Sensitivity ◽  
Fluorescence Sensor ◽  
Quantitative Detection ◽  
Fluorescence Signal ◽  
Ratiometric Fluorescence ◽  
Sensitivity And Selectivity

Since the fluctuation of cellular selenocysteine (Sec) concentration plays an all-important role in the development of numerous human disorders, the real-time fluorescence detection of Sec in living systems has attracted plenty of interest during the past decade. In order to obtain a faster and more sensitive small organic molecule fluorescence sensor for the Sec detection, a new ratiometric fluorescence sensor Q7 was designed based on the fluorescence resonance energy transfer (FRET) strategy with coumarin fluorophore as energy donor and 4-hydroxy naphthalimide fluorophore (with 2,4-dinitrobenzene sulfonate as fluorescence signal quencher and Sec-selective recognition site) as an energy acceptor. The sensor Q7 exhibited only a blue fluorescence signal, and displayed two well distinguished emission bands (blue and green) in the presence of Sec with ∆λ of 68 nm. Moreover, concentrations ranging of quantitative detection of Sec of Q7 was from 0 to 45 μM (limit of detection = 6.9 nM), with rapid ratiometric response, high sensitivity and selectivity capability. Impressively, the results of the living cell imaging test demonstrated Q7 has the potentiality of being an ideal sensor for real-time Sec detection in biosystems.

Highly Selective Ratiometric Fluorescence Determination of Ag+Based on a Molecular Motif with One Pyrene and Two Adenine Moieties

2008 ◽  
Vol 10 (11) ◽  
pp. 2271-2274 ◽  
Author(s):  
Lei Liu ◽  
Deqing Zhang ◽  
Guanxin Zhang ◽  
Junfeng Xiang ◽  
Daoben Zhu
Keyword(s):  
Ratiometric Fluorescence ◽  
Fluorescence Determination

scholarly journals Molecular Imprinting Based Hybrid Ratiometric Fluorescence Sensor for the Visual Determination of Bovine Hemoglobin

ACS Sensors ◽  
2018 ◽  
Vol 3 (2) ◽  
pp. 378-385 ◽  
Author(s):  
Xiaoyan Wang ◽  
Shuangmei Yu ◽  
Wen Liu ◽  
Longwen Fu ◽  
Yunqing Wang ◽  
...  
Keyword(s):  
Molecular Imprinting ◽  
Fluorescence Sensor ◽  
Bovine Hemoglobin ◽  
Ratiometric Fluorescence

Ultrasensitive Silicon Nanoparticle Ratiometric Fluorescence Determination of Mercury(II)

2018 ◽  
Vol 51 (7) ◽  
pp. 1013-1028 ◽  
Author(s):  
Cuiyan Wu ◽  
Xue Peng ◽  
Qiujun Lu ◽  
Haitao Li ◽  
Youyu Zhang ◽  
...  
Keyword(s):  
Ratiometric Fluorescence ◽  
Silicon Nanoparticle ◽  
Fluorescence Determination

scholarly journals Terbium Functionalized Schizochytrium-Derived Carbon Dots for Ratiometric Fluorescence Determination of the Anthrax Biomarker

Nanomaterials ◽  
2019 ◽  
Vol 9 (9) ◽  
pp. 1234 ◽  
Author(s):  
Lina Zhang ◽  
Zhanwei Wang ◽  
Jingbo Zhang ◽  
Changliang Shi ◽  
Xiaoli Sun ◽  
...  
Keyword(s):  
Carbon Dots ◽  
Dipicolinic Acid ◽  
Green Emission ◽  
Ratiometric Fluorescence ◽  
Green Method ◽  
Lake Water Sample ◽  
Bacillus Anthracis Spores ◽  
Anthrax Spores ◽  
Emission Effect

Efficient and instant detection of biological threat-agent anthrax is highly desired in the fields of medical care and anti-terrorism. Herein, a new ratiometric fluorescence (FL) nanoprobe was elaborately tailored for the determination of 2,6-dipicolinic acid (DPA), a biomarker of anthrax spores, by grafting terbium ions (Tb3+) to the surface of carbon dots (CDs). CDs with blue FL were fabricated by a simple and green method using schizochytrium as precursor and served as an FL reference and a supporting substrate for coordination with Tb3+. On account of the absorbance energy transfer emission effect (AETE), green emission peaks of Tb3+ in CDs-Tb nanoprobe appeared at 545 nm upon the addition of DPA. Under optimal conditions, good linearity between the ratio FL intensity of F545/F445 and the concentrations of DPA was observed within the experimental concentration range of 0.5–6 μM with the detection limit of 35.9 nM, which is superior to several literature studies and significantly lower than the infectious dosage of the Bacillus anthracis spores. Moreover, the CDs-Tb nanoprobe could sensitively detect DPA in the lake water sample. This work offers an efficient self-calibrating and background-free method for the determination of DPA.

A colorimetric and ratiometric fluorescence sensor for sensitive detection of fluoride ions in water and toothpaste

RSC Advances ◽  
2016 ◽  
Vol 6 (54) ◽  
pp. 49158-49163 ◽  
Author(s):  
Bo Qiu ◽  
Yi Zeng ◽  
Lixia Cao ◽  
Rui Hu ◽  
Xiaohui Zhang ◽  
...  
Keyword(s):  
Detection Limit ◽  
Quantitative Determination ◽  
Direct Observation ◽  
Spectral Response ◽  
Fluorescence Sensor ◽  
Sensitive Detection ◽  
Ratiometric Fluorescence ◽  
Fluoride Ions ◽  
Ratiometric Sensor

The colorimetric and ratiometric sensor shows significant spectral response towards fluoride ions in water with a detection limit as low as 2.7 ppb, enabling direct observation with the bare eye as well as quantitative determination of F− in toothpaste.

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