Highly Sensitive and Selective Fluorescence Probe for 2,4‐Dinitrophenylhydrazine Detection in Wastewater Using Water‐Soluble CdTe QDs

2019 ◽  
Vol 95 (3) ◽  
pp. 895-900 ◽  
Author(s):  
Qiuyue Wang ◽  
Xuehan Wang ◽  
Yiwei Wu
Keyword(s):  
Fluorescence Probe ◽  
Water Soluble ◽  
Cdte Qds ◽  
Highly Sensitive

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>

scholarly journals Development of A New Water-soluble Fluorescence Probe for Hypochlorous Acid Detection in Drinking Water

2021 ◽  
pp. 100027
Author(s):  
Haoyuan Yin ◽  
Haijun Chi ◽  
Zhuye Shang ◽  
Ali Qaitoon ◽  
Jianfei Yu ◽  
...  
Keyword(s):  
Drinking Water ◽  
Hypochlorous Acid ◽  
Fluorescence Probe ◽  
Water Soluble

A reversible and colorimetric fluorescence probe for highly sensitive detection of toxic BF3 in air

2018 ◽  
Vol 276 ◽  
pp. 166-172 ◽  
Author(s):  
Yingzhe Wang ◽  
Yang Yang ◽  
Fangzhou Qiu ◽  
Yan Feng ◽  
Xuerui Song ◽  
...  
Keyword(s):  
Fluorescence Probe ◽  
Sensitive Detection ◽  
Highly Sensitive ◽  
Highly Sensitive Detection

Forming a water-soluble supramolecular polymer and an AIEE hydrogel: two novel approaches for highly sensitive detection and efficient adsorption of aldehydes

2019 ◽  
Vol 10 (47) ◽  
pp. 6489-6494 ◽  
Author(s):  
Yan-Qing Fan ◽  
Qing Huang ◽  
You-Ming Zhang ◽  
Jiao Wang ◽  
Xiao-Wen Guan ◽  
...  
Keyword(s):  
Water Soluble ◽  
Sensitive Detection ◽  
Supramolecular Polymer ◽  
Highly Sensitive ◽  
Novel Approaches ◽  
Highly Sensitive Detection

Two novel approaches for highly sensitive detection and efficient adsorption of aldehydes by forming a water-soluble supramolecular polymer and an AIEE hydrogel.

scholarly journals Rapid-Response and Highly Sensitive Boronate Derivative-Based Fluorescence Probe for Detecting H2O2 in Living Cells

2019 ◽  
Vol 2019 ◽  
pp. 1-12 ◽  
Author(s):  
Muthusamy Selvaraj ◽  
Kanagaraj Rajalakshmi ◽  
Yun-Sik Nam ◽  
Yeonhee Lee ◽  
Byoung Chan Kim ◽  
...  
Keyword(s):  
Functional Group ◽  
Fluorescence Probe ◽  
Limit Of Detection ◽  
High Sensitivity ◽  
Rapid Identification ◽  
Oxygen Species ◽  
Human Breast ◽  
Highly Sensitive ◽  
Whatman Paper ◽  
Mcf 7

Intracellular H2O2 monitoring is important and has driven researchers to pursue advancements for the rapid identification of H2O2, since H2O2 is short-lived in cell lines. An arylboronate derivative has been investigated as a chemospecific fluorescence recognition agent for H2O2. Triphenylimidazoleoxadiazolephenyl (TPIOP) boronate was contrived as a novel candidate for the rapid and sensitive recognition of H2O2. The probe was conjugated using the TPIOP functional group acting as an excellent fluorescent enhancer. The TPIOP group stimulated the polarization of C–B bond due to its extended π-conjugation, which included heteroatoms, and induced the production of rapid signal because of the highly polar C–B bond along with the corresponding boronate unit. While H2O2 reacts with TPIOP boronate, its nucleophilic addition to the boron generates a charged tetrahedral boronate complex, and then the C–B bond migrates toward one of the electrophilic peroxide oxygen atoms. The resulting boronate ester is then hydrolyzed by water into a phenol, which significantly enhances fluorescence through aggregation-induced emission. The TPIOP boronate probe responded to H2O2 rapidly, within 2 min, and exhibited high sensitivity with a limit of detection of 8 nM and a 1000-fold selectivity in the presence of other reactive oxygen species. Therefore, the developed TPIOP boronate chemodosimeter was successfully utilized to visualize and quantify intracellular H2O2 from human breast cancer (MCF-7) cells, as well as gaseous and aqueous H2O2 from environmental samples using Whatman paper strips coated with TPIOP boronate.

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