A dual-responsive luminescent sensor based on a water-stable Cd(ii)-MOF for the highly selective and sensitive detection of acetylacetone and Cr2O72− in aqueous solutions

CrystEngComm ◽  
2020 ◽  
Vol 22 (7) ◽  
pp. 1166-1175 ◽  
Author(s):  
Ying-Jie Yang ◽  
Yue-Hua Li ◽  
Dong Liu ◽  
Guang-Hua Cui
Keyword(s):  
Aqueous Solution ◽  
Aqueous Solutions ◽  
High Sensitivity ◽  
Sensitive Detection ◽  
Dual Function ◽  
Dual Responsive ◽  
Luminescent Sensor ◽  
Sensitivity And Selectivity

Two water-stable cadmium(ii) MOFs were synthesized and characterized. 1 is the first dual-function Cd(ii)-MOF luminescent sensor for sensing acetylacetone and Cr2O72− in aqueous solution with high sensitivity and selectivity and good recyclability.

scholarly journals Highly sensitive detection of nitrobenzene by a series of fluorescent 2D zinc(ii) metal–organic frameworks with a flexible triangular ligand

RSC Advances ◽  
2021 ◽  
Vol 11 (39) ◽  
pp. 23975-23984
Author(s):  
Xue Yang ◽  
Yixia Ren ◽  
Hongmei Chai ◽  
Xiufang Hou ◽  
Zhixiang Wang ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Metal Organic Frameworks ◽  
High Sensitivity ◽  
Fluorescent Sensors ◽  
Sensitive Detection ◽  
Donor Ligands ◽  
Highly Sensitive ◽  
Metal Organic ◽  
Highly Sensitive Detection

Four fluorescent 2D Zn-MOFs based on a flexible triangular ligand and linear N-donor ligands are hydrothermally prepared and used to detect nitrobenzene in aqueous solution with high sensitivity, demonstrating their potential as fluorescent sensors.

A highly sensitive and selective fluorescent turn-on chemosensor bearing a 7-diethylaminocoumarin moiety for the detection of cyanide in organic and aqueous solutions

2020 ◽  
Vol 44 (44) ◽  
pp. 19155-19165
Author(s):  
Burcu Aydıner ◽  
Ömer Şahin ◽  
Deniz Çakmaz ◽  
Gökhan Kaplan ◽  
Kerem Kaya ◽  
...  
Keyword(s):  
Aqueous Solutions ◽  
Emission Intensity ◽  
High Sensitivity ◽  
Turn On ◽  
Highly Sensitive ◽  
Sensitivity And Selectivity

Novel 7-diethylaminocoumarin based dyes showed high sensitivity and selectivity to cyanide anions in both organic and aqueous solutions, which was observed by a drastic increment in the emission intensity.

A rapid and naked-eye visible rhodamine 6G-based chemosensor for sensitive detection of copper(ii) ions in aqueous solution

2018 ◽  
Vol 10 (47) ◽  
pp. 5731-5737 ◽  
Author(s):  
Q. Huang ◽  
Y. T. Chen ◽  
Y. W. Ren ◽  
Z. Y. Wang ◽  
Y. X. Zhu ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Aqueous Solutions ◽  
High Selectivity ◽  
Rhodamine 6G ◽  
Sensitive Detection ◽  
Naked Eye ◽  
Eye Recognition

The chemosensor R6GHP showed high selectivity for Cu2+ with “naked-eye” recognition in aqueous solutions.

Highly Hg2+-sensitive and selective fluorescent sensors in aqueous solution and sensors-encapsulated polymeric membrane

RSC Advances ◽  
2016 ◽  
Vol 6 (13) ◽  
pp. 10401-10411 ◽  
Author(s):  
Sasiwimon Kraithong ◽  
Pattareeya Damrongsak ◽  
Kullatat Suwatpipat ◽  
Jitnapa Sirirak ◽  
Pattanawit Swanglap ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Detection Limits ◽  
High Sensitivity ◽  
Fluorescent Sensors ◽  
Polymeric Membranes ◽  
Polymeric Membrane ◽  
Sensitivity And Selectivity

The sensors in solutions and sensors encapsulated polymeric membranes exhibited high sensitivity and selectivity for Hg2+ detection, with detection limits of 0.2–49 ppb.

scholarly journals Selective colorimetric molecular probe for cyanide ion detection in aqueous solution

2018 ◽  
Vol 9 (4) ◽  
pp. 338-346
Author(s):  
Yousef Mohammad Hijji ◽  
Hani Darwish Tabba ◽  
Rajeesha Rajan ◽  
Hamzeh Mohammad Abdel-Halim ◽  
Musa Ibrahim El-Barghouthi ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Aqueous Solutions ◽  
Aqueous Media ◽  
Molecular Probe ◽  
Dihydrogen Phosphate ◽  
Cyanide Ion ◽  
Absorption Bands ◽  
Spectral Changes ◽  
Yellow Color ◽  
Sensitivity And Selectivity

5-Nitro-2-hydroxybenzaldehyde (1) demonstrated to be a sensitive, and a selective molecular probe for cyanide ion (CN-) in aqueous media. In acetonitrile, compound 1 shows sensitivity and selectivity for cyanide, acetate and fluoride, in comparison to other investigated anions using both visual and spectroscopic means. In aqueous solution, the color becomes intense yellow upon addition of cyanide, while acetate showed this effect to a much lower extent. Significant spectral changes were also detected with the appearance of two new absorption bands at 358 and 387 nm. This was accompanied by concomitant intensity decrease for the band at 314 nm. Fluoride, dihydrogen phosphate, chloride, bromide, perchlorate, and azide showed negligible color and spectral changes for the probe in aqueous solutions. On the other hand, hydrogen sulfate caused fainting of the yellow color and gave a spectrum similar to that of the sensor in polar aprotic solvents. The cyanide ion was detected at micro molar levels in aqueous solutions with a stoichiometry of 1:1 for CN: probe in acetonitrile as the solvent. Cyanide, hydroxide, acetate, fluoride and dihydrogen phosphate showed identical changes to color and spectra, indicating a hydrogen bonding and a deprotonation mechanism.

An “off–on–off” fluorescence chemosensor for the sensitive detection of Cu2+ in aqueous solution based on multiple fluorescence emission mechanisms

The Analyst ◽  
2021 ◽  
Vol 146 (8) ◽  
pp. 2670-2678
Author(s):  
Aimei Zhou ◽  
Shuhua Han
Keyword(s):  
Aqueous Solution ◽  
Chemical Sensor ◽  
Copper Ions ◽  
Fluorescence Emission ◽  
High Sensitivity ◽  
Sensitive Detection ◽  
New Type ◽  
Fluorescent Chemical Sensor ◽  
Pure Aqueous Solution

A new type of fluorescent chemical sensor (AHBH-PMOs) with AIE and ICT mechanisms is synthesized, which can detect copper ions in pure aqueous solution with good selectivity and high sensitivity.

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