A Heterogeneous Nanoscale Covalent Organic Framework Fluorescence Probe for Sensitive Detection of Hydrogen Sulfide

ChemNanoMat ◽  
2021 ◽  
Author(s):  
Xuan Ge ◽  
Houyong Zhang ◽  
Chengxiao Zhang ◽  
Mingyue Du
Keyword(s):  
Hydrogen Sulfide ◽  
Fluorescence Probe ◽  
Sensitive Detection ◽  
Covalent Organic Framework ◽  
Organic Framework

A Three-Dimensional Tetraphenylethylene-Based Fluorescence Covalent Organic Framework for Molecular Recognition

2020 ◽  
Author(s):  
Junxia Ren ◽  
Yaozu Liu ◽  
Xin Zhu ◽  
Yangyang Pan ◽  
Yujie Wang ◽  
...  
Keyword(s):  
Molecular Recognition ◽  
Fluorescence Probe ◽  
Three Dimensional ◽  
Hazardous Substances ◽  
Covalent Organic Framework ◽  
Highly Sensitive ◽  
Volatile Organic ◽  
Polycyclic Aromatic ◽  
Better Than ◽  
Organic Framework

<p><a></a><a></a><a></a><a></a><a></a><a></a><a></a><a>The development of highly-sensitive recognition of </a><a></a><a></a><a></a><a></a><a>hazardous </a>chemicals, such as volatile organic compounds (VOCs) and polycyclic aromatic hydrocarbons (PAHs), is of significant importance because of their widespread social concerns related to environment and human health. Here, we report a three-dimensional (3D) covalent organic framework (COF, termed JUC-555) bearing tetraphenylethylene (TPE) side chains as an aggregation-induced emission (AIE) fluorescence probe for sensitive molecular recognition.<a></a><a> </a>Due to the rotational restriction of TPE rotors in highly interpenetrated framework after inclusion of dimethylformamide (DMF), JUC-555 shows impressive AIE-based strong fluorescence. Meanwhile, owing to the large pore size (11.4 Å) and suitable intermolecular distance of aligned TPE (7.2 Å) in JUC-555, the obtained material demonstrates an excellent performance in the molecular recognition of hazardous chemicals, e.g., nitroaromatic explosives, PAHs, and even thiophene compounds, via a fluorescent quenching mechanism. The quenching constant (<i>K</i><sub>SV</sub>) is two orders of magnitude better than those of other fluorescence-based porous materials reported to date. This research thus opens 3D functionalized COFs as a promising identification tool for environmentally hazardous substances.</p>

Naked-eye and ratiometric fluorescence probe for fast and sensitive detection of hydrogen sulfide and its application in bioimaging

2018 ◽  
Vol 42 (23) ◽  
pp. 19272-19278 ◽  
Author(s):  
Jianlong Ma ◽  
Feifei Li ◽  
Qiang Li ◽  
Yijing Li ◽  
Chaoxian Yan ◽  
...  
Keyword(s):  
Hydrogen Sulfide ◽  
Hela Cells ◽  
Fluorescence Probe ◽  
Sensitive Detection ◽  
Ratiometric Fluorescence ◽  
Naked Eye

A sensitive and ultrafast ratiometric fluorescence probe for the detection of hydrogen sulfide (H2S) in HeLa cells and zebrafish.

Facile synthesis of a covalent organic framework (COF) based on the reaction of melamine and trimesic acid incorporated electrospun nanofiber and its application as an electrochemical tyrosinamide aptasensor

2020 ◽  
Vol 44 (35) ◽  
pp. 14922-14927
Author(s):  
Masoumeh Sarabaegi ◽  
Mahmoud Roushani ◽  
Hadi Hosseini ◽  
S. Jafar Hoseini ◽  
Mehrangiz Bahrami
Keyword(s):  
Sensitive Detection ◽  
Electrospun Nanofiber ◽  
Facile Synthesis ◽  
Redox Probe ◽  
Covalent Organic Framework ◽  
Trimesic Acid ◽  
Highly Sensitive ◽  
Highly Sensitive Detection ◽  
Organic Framework

Schematic presentation of the COFCNF platform for the highly sensitive detection of tyrosinamide by using a solution containing [Fe(CN)6]3−/[Fe(CN)6]4− as a redox probe.

Heteroporous 3D covalent organic framework-based magnetic nanospheres for sensitive detection of bisphenol A

Talanta ◽  
2021 ◽  
Vol 231 ◽  
pp. 122343
Author(s):  
Feifei Lu ◽  
Jian Lin ◽  
Chenchen Lin ◽  
Guomin Qi ◽  
Xucong Lin ◽  
...  
Keyword(s):  
Bisphenol A ◽  
Sensitive Detection ◽  
Covalent Organic Framework ◽  
Magnetic Nanospheres ◽  
Organic Framework

A Three-Dimensional Tetraphenylethylene-Based Fluorescence Covalent Organic Framework for Molecular Recognition

2020 ◽  
Author(s):  
Junxia Ren ◽  
Yaozu Liu ◽  
Xin Zhu ◽  
Yangyang Pan ◽  
Yujie Wang ◽  
...  
Keyword(s):  
Molecular Recognition ◽  
Fluorescence Probe ◽  
Three Dimensional ◽  
Hazardous Substances ◽  
Covalent Organic Framework ◽  
Highly Sensitive ◽  
Volatile Organic ◽  
Polycyclic Aromatic ◽  
Better Than ◽  
Organic Framework

<p><a></a><a></a><a></a><a></a><a></a><a></a><a></a><a>The development of highly-sensitive recognition of </a><a></a><a></a><a></a><a></a><a>hazardous </a>chemicals, such as volatile organic compounds (VOCs) and polycyclic aromatic hydrocarbons (PAHs), is of significant importance because of their widespread social concerns related to environment and human health. Here, we report a three-dimensional (3D) covalent organic framework (COF, termed JUC-555) bearing tetraphenylethylene (TPE) side chains as an aggregation-induced emission (AIE) fluorescence probe for sensitive molecular recognition.<a></a><a> </a>Due to the rotational restriction of TPE rotors in highly interpenetrated framework after inclusion of dimethylformamide (DMF), JUC-555 shows impressive AIE-based strong fluorescence. Meanwhile, owing to the large pore size (11.4 Å) and suitable intermolecular distance of aligned TPE (7.2 Å) in JUC-555, the obtained material demonstrates an excellent performance in the molecular recognition of hazardous chemicals, e.g., nitroaromatic explosives, PAHs, and even thiophene compounds, via a fluorescent quenching mechanism. The quenching constant (<i>K</i><sub>SV</sub>) is two orders of magnitude better than those of other fluorescence-based porous materials reported to date. This research thus opens 3D functionalized COFs as a promising identification tool for environmentally hazardous substances.</p>

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