A ready‐to‐use fluorescence probe of Pd 2+ in water: novel tricyclic heterocyclic base on 1,3,4‐ Oxadiazole

Luminescence ◽  
2021 ◽  
Author(s):  
Ke Su ◽  
Xiaomei Huang ◽  
Wei Wei ◽  
Xiaotong Zeng ◽  
Siyu Xiang ◽  
...  
Keyword(s):  
Fluorescence Probe ◽  
Heterocyclic Base

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>

Determination of Protein in Biological Samples Using a Thiosemicarbazone Derivative as a Fluorescence Probe

2013 ◽  
Vol 30 (5) ◽  
pp. 555
Author(s):  
Shaoguang GENG ◽  
Xiaoying JIANG ◽  
Fengling CUI ◽  
Lei SHI
Keyword(s):  
Biological Samples ◽  
Fluorescence Probe

The effect of acceptor modification upon the synthesis of dinucleoside phosphates catalyzed by non-specific ribonucleases of Penicillium claviforme

1979 ◽  
Vol 44 (2) ◽  
pp. 613-625 ◽  
Author(s):  
Valentina I. Gulyaeva ◽  
Antonín Holý
Keyword(s):  
Reaction Center ◽  
Hydroxy Group ◽  
Pyrimidine Ring ◽  
Phosphate Group ◽  
Mutual Orientation ◽  
Acceptor Molecule ◽  
Heterocyclic Base ◽  
Sugar Moiety ◽  
Cyclic Phosphate ◽  
Penicillium Claviforme

The present paper studies the effect of the modification of heterocyclic base, sugar moiety and the presence of phosphate group on the nucleoside acceptors in the synthesis of dinucleoside phosphates from adenosine 2',3'-cyclic phosphate as donor, catalyzed by nonspecific acidic extracellular and intracellular ribonucleases from Penicillium claviforme. The enzyme binds specifically the acceptor molecule, preferring cytosine nucleosides. It requires the presence of the whole sugar moiety, an exact mutual orientation of the heterocyclic base and the reaction center (5'-hydroxy group), and a suitable conformation of the acceptor molecule. The enzyme-acceptor bond is homochiral and the presence of the N3-H group in the pyrimidine ring is important. The reaction between the donor and the acceptor is bimolecular and is competitively inhibited by some purine nucleosides.

Nanoparticle-based fluorescence probe for detection of NF-κB transcription factor in single cell via steric hindrance

2021 ◽  
Vol 188 (7) ◽  
Author(s):  
Yuedi Ding ◽  
Zhenqiang Fan ◽  
Bo Yao ◽  
Dong Xu ◽  
Minhao Xie ◽  
...  
Keyword(s):  
Transcription Factor ◽  
Single Cell ◽  
Steric Hindrance ◽  
Fluorescence Probe

Ultrastable MAPbBr3@ZIF-8Co5% as a novel fluorescence probe for highly selectively sensing Fe3+ in water

2021 ◽  
Vol 235 ◽  
pp. 118056
Author(s):  
Rongzhi Chen ◽  
Kuo Zhan ◽  
Yizhou Xing ◽  
Zhaolong Wang ◽  
Yabin Zhu ◽  
...  
Keyword(s):  
Fluorescence Probe

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

High-Specific Fluorescence Probe for SO32− Detection and Bioimaging

2021 ◽  
Author(s):  
Jianbin Chao ◽  
Jiamin Zhao ◽  
Yongbin Zhang ◽  
Fangjun Huo ◽  
Caixia Yin ◽  
...  
Keyword(s):  
Fluorescence Probe ◽  
Specific Fluorescence
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