scholarly journals On–off–on fluorescent oligomer as a chemosensor for the detection of manganese(vii), sulfur(ii) and aldehydes based on the inner filter effect

RSC Advances ◽  
2017 ◽  
Vol 7 (6) ◽  
pp. 3051-3058 ◽  
Author(s):  
Peng Ding ◽  
Xia Xin ◽  
Lingli Zhao ◽  
Zengchun Xie ◽  
Qinghong Zhang ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Inner Filter Effect ◽  
Water Soluble ◽  
Label Free ◽  
Filter Effect ◽  
Label Free Detection

In this article, a sensitive and selective on–off–on fluorescence chemosensor, Tyloxapol (one kind of water soluble oligomer), was developed for the label-free detection of MnO4− ions in aqueous solution.

Inner filter effect based selective detection of picric acid in aqueous solution using green luminescent copper nanoclusters

2018 ◽  
Vol 42 (9) ◽  
pp. 7223-7229 ◽  
Author(s):  
Krishnamoorthy Shanmugaraj ◽  
S. Abraham John
Keyword(s):  
Aqueous Solution ◽  
Environmental Protection ◽  
Homeland Security ◽  
Picric Acid ◽  
Inner Filter Effect ◽  
Selective Detection ◽  
Copper Nanoclusters ◽  
Filter Effect

Designing superior probes to detect trace amounts of picric acid (PA) is of huge importance for homeland security and environmental protection.

Modulating an in situ fluorogenic reaction for the label-free ratiometric detection of biothiols

The Analyst ◽  
2019 ◽  
Vol 144 (15) ◽  
pp. 4520-4525 ◽  
Author(s):  
Haiqing Zhang ◽  
Yan Xiao ◽  
Xiuhua Zhang ◽  
Shengfu Wang
Keyword(s):  
Inner Filter Effect ◽  
Label Free ◽  
Filter Effect ◽  
Ratiometric Detection ◽  
Fluorogenic Reaction

A label-free ratiometric method for biothiol detection is developed based on the modulation of fluorogenic reaction and the inner filter effect.

Bifunctional Nanoparticles as a Recyclable Fluorescent Sensor for pH and Cu2+ Detection and Removal of Heavy Metal Ions

NANO ◽  
2020 ◽  
Vol 15 (04) ◽  
pp. 2050048
Author(s):  
Yong Qian ◽  
Xiangfu Meng ◽  
Hongji Liu ◽  
Xingyu Wang ◽  
Hui Wang
Keyword(s):  
Aqueous Solution ◽  
Heavy Metal Ions ◽  
High Efficiency ◽  
Fluorescent Sensor ◽  
High Sensitivity ◽  
Label Free ◽  
Practical Applications ◽  
Surrounding Environment ◽  
Label Free Detection ◽  
Recyclable Adsorbent

Magnetic and fluorescent-based sensors have demonstrated widely applications due to their easily recycle and quickly optical response. However, the complex synthesis and weaker function of these sensors limit their practical applications. Herein, an unmodified, magnetic-functionalized carbon dots-based fluorescent sensor has been developed for label-free detection of pH and Cu[Formula: see text] with high sensitivity. The sensors can not only reversibly quench and recover the fluorescence signals in response to the variation of surrounding environment including pH and Cu[Formula: see text], but also be used as a high-efficiency recyclable adsorbent for removing Cu[Formula: see text], Hg[Formula: see text], Cr[Formula: see text] and Pb[Formula: see text] from aqueous solution.

scholarly journals A close analysis of metal-enhanced fluorescence of tryptophan induced by silver nanoparticles: wavelength emission dependence

2013 ◽  
Vol 11 (1) ◽  
pp. 111-115 ◽  
Author(s):  
Anderson Caires ◽  
Luciano Costa ◽  
Joelson Fernandes
Keyword(s):  
Silver Nanoparticles ◽  
Inner Filter Effect ◽  
Label Free ◽  
Enhanced Fluorescence ◽  
Metal Enhanced Fluorescence ◽  
Promising Alternative ◽  
Close Analysis ◽  
Label Free Detection ◽  
Nanoparticles Concentration ◽  
Wavelength Emission

AbstractIn the last few years, silver nanoparticles have been proposed as a promising alternative for the label-free detection of proteins via metal-enhanced fluorescence. Generally, the aromatic amino acid tryptophan is most frequently used in this type of studies, because the intrinsic fluorescence of proteins is usually dominated by tryptophan emissions. In the present study, we evaluated the fluorescence behavior of tryptophan in the presence of a silver colloid with nanoparticles of 100 nm in diameter. The results showed that a nanoparticles concentration of 32 mg L−1 induced maximum fluorescence enhancement. However, the metal-enhanced fluorescence was dependent on the emission wavelength of tryptophan, and this phenomenon was closely related to the metal surface reabsorption process (inner filter effect), suggesting that the plasmon resonance reabsorption effect should be taken into account in analyses involving protein studies by metal-enhanced fluorescence.

High sensitivity label-free detection of Fe3+ ion in aqueous solution using fluorescent MoS2 quantum dots

2019 ◽  
Vol 281 ◽  
pp. 989-997 ◽  
Author(s):  
Jian Ma ◽  
Haihu Yu ◽  
Xin Jiang ◽  
Zhuozhao Luo ◽  
Yu Zheng
Keyword(s):  
Aqueous Solution ◽  
Quantum Dots ◽  
High Sensitivity ◽  
Label Free ◽  
Label Free Detection

Inner Filter Effect Based Selective Detection of Nitroexplosive-Picric Acid in Aqueous Solution and Solid Support Using Conjugated Polymer

ACS Sensors ◽  
2016 ◽  
Vol 1 (8) ◽  
pp. 1070-1077 ◽  
Author(s):  
Arvin Sain Tanwar ◽  
Sameer Hussain ◽  
Akhtar Hussain Malik ◽  
Mohammad Adil Afroz ◽  
Parameswar Krishnan Iyer
Keyword(s):  
Aqueous Solution ◽  
Conjugated Polymer ◽  
Picric Acid ◽  
Inner Filter Effect ◽  
Solid Support ◽  
Selective Detection ◽  
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.

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