Fluorescent Recognition of Adenosine Triphosphate and Uric Acid by two Eu-Based Metal-Organic Frameworks

2021 ◽  
Author(s):  
Li-Juan Han ◽  
Ya-jie Kong ◽  
Xing-Min Zhang ◽  
Guo-Zheng Hou ◽  
Hua-Chong Chen ◽  
...  
Keyword(s):  
Uric Acid ◽  
Adenosine Triphosphate ◽  
Rapid Detection ◽  
Metal Organic Frameworks ◽  
Fluorescent Sensors ◽  
Metal Organic ◽  
Oxalate Group ◽  
Fluorescent Recognition ◽  
Cyclohexanedicarboxylic Acid

Two Eu-based MOF fluorescent sensors, Eu2(CHDA)2(C2O4)(H2O)4 (1) (CHDA = 1,4-cyclohexanedicarboxylic acid, C2O4 = oxalate group) and Eu2(PDA)3(H2O)3 (2) (p-Phenylenediacetic acid = PDA), were prepared for the rapid detection of uric...

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.

Turn-off/on fluorescent sensors for Cu2+ and ATP in aqueous solution based on a tetraphenylethylene derivative

2019 ◽  
Vol 7 (9) ◽  
pp. 2640-2645 ◽  
Author(s):  
Lai-Yao Geng ◽  
Yang Zhao ◽  
Edward Kamya ◽  
Jin-Tang Guo ◽  
Bin Sun ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Adenosine Triphosphate ◽  
Rapid Detection ◽  
Fluorescent Sensors ◽  
Cupric Ion

Two novel fluorescent sensors based on a tetraphenylethylene derivative (TPE-COOH) were designed and prepared for the rapid detection of cupric ion and adenosine triphosphate (ATP) in 100% aqueous solution.

Metal–organic frameworks constructed from tib and carboxylate acid ligands: selective sensing of nitro explosives and magnetic properties

2017 ◽  
Vol 46 (23) ◽  
pp. 7567-7576 ◽  
Author(s):  
Liu Yang ◽  
Li Cao ◽  
Xiao Li ◽  
Chao Qin ◽  
Liang Zhao ◽  
...  
Keyword(s):  
Magnetic Properties ◽  
Small Molecule ◽  
High Selectivity ◽  
Metal Organic Frameworks ◽  
Fluorescent Sensors ◽  
Nitro Explosives ◽  
Metal Organic

Four novel metal–organic frameworks have been synthesized under certain conditions. 1 and 2 can be used as fluorescent sensors for small-molecule sensing with high selectivity. Meanwhile, 3 and 4 are both antiferromagnetic substances.

scholarly journals Cinnamal Sensing and Luminescence Color Tuning in a Series of Rare-Earth Metal−Organic Frameworks with Trans-1,4-cyclohexanedicarboxylate

Molecules ◽  
2021 ◽  
Vol 26 (17) ◽  
pp. 5145
Author(s):  
Pavel A. Demakov ◽  
Alena A. Vasileva ◽  
Sergey S. Volynkin ◽  
Alexey A. Ryadun ◽  
Denis G. Samsonenko ◽  
...  
Keyword(s):  
Metal Organic Frameworks ◽  
Earth Metal ◽  
Quantum Yields ◽  
Accessible Volume ◽  
Emission Color ◽  
Metal Organic ◽  
Cyclohexanedicarboxylic Acid ◽  
Bright Luminescence ◽  
Luminescence Color ◽  
Tunable Emission

Three isostructural metal–organic frameworks ([Ln2(phen)2(NO3)2(chdc)2]·2DMF (Ln3+ = Y3+ for 1, Eu3+ for 2 or Tb3+ for 3; phen = 1,10-phenanthroline; H2chdc = trans-1,4-cyclohexanedicarboxylic acid) were synthesized and characterized. The compounds are based on a binuclear block {M2(phen)2(NO3)2(OOCR)4} assembled into a two-dime nsional square-grid network containing tetragonal channels with 26% total solvent-accessible volume. Yttrium (1)-, europium (2)- and terbium (3)-based structures emit in the blue, red and green regions, respectively, representing the basic colors of the standard RGB matrix. A doping of Eu3+ and/or Tb3+ centers into the Y3+-based phase led to mixed-metal compositions with tunable emission color and high quantum yields (QY) up to 84%. The bright luminescence of a suspension of microcrystalline 3 in DMF (QY = 78%) is effectively quenched by diluted cinnamaldehyde (cinnamal) solutions at millimolar concentrations, suggesting a convenient and analytically viable sensing method for this important chemical.

scholarly journals Recent Advances in Developing Lanthanide Metal–Organic Frameworks for Ratiometric Fluorescent Sensing

2021 ◽  
Vol 8 ◽  
Author(s):  
Tianying Sun ◽  
Yaobin Gao ◽  
Yangyang Du ◽  
Lei Zhou ◽  
Xian Chen
Keyword(s):  
Metal Organic Frameworks ◽  
Fluorescent Sensors ◽  
Lanthanide Ions ◽  
Fluorescent Sensing ◽  
Sensing Systems ◽  
Fluorescent Response ◽  
Metal Organic ◽  
Lanthanide Metal ◽  
Construction Strategies ◽  
Single Emission

Fluorescent probes have attracted special attention in developing optical sensor systems due to their reliable and rapid fluorescent response upon reaction with the analyte. Comparing to traditional fluorescent sensing systems that employ the intensity of only a single emission, ratiometric fluorescent sensors exhibit higher sensitivity and allow fast visual screening of analytes because of quantitatively analyzing analytes through the emission intensity ratio at two or more wavelengths. Lanthanide metal–organic frameworks (LnMOFs) are highly designable multifunctional luminescent materials as lanthanide ions, organic ligands, and guest metal ions or chromophores are all potential sources for luminescence. They thus have been widely employed as ratiometric fluorescent sensors. This mini review summarized the basic concept, optical features, construction strategies, and the ratiometric fluorescent sensing mechanisms of dual-emitting LnMOFs. The review ends with a discussion on the prospects, challenges, and new direction in designing LnMOF-based ratiometric fluorescent sensors.

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