Synthesis, structures and applications as fluorescence probes of novel Hg(II)/Ag(I) functional supramolecular compounds based on nitrogen heterocyclic cations

2018 ◽  
Vol 17 (4) ◽  
pp. 273-283 ◽  
Author(s):  
Wen-Ming Huang ◽  
Ya-Bin Lu ◽  
Min Xiao ◽  
Ben-Lai Wu ◽  
Zhen-Ning Yan ◽  
...  
Keyword(s):  
Fluorescence Probes ◽  
Supramolecular Compounds ◽  
Heterocyclic Cations ◽  
Nitrogen Heterocyclic

scholarly journals Supramolecular networks derived from hexacyanoferrates and nitrogen heterocyclic cations

Polyhedron ◽  
2019 ◽  
Vol 157 ◽  
pp. 341-357 ◽  
Author(s):  
Pantelis Xydias ◽  
Smaragda Lymperopoulou ◽  
Vasiliki Dokorou ◽  
Manolis Manos ◽  
John C. Plakatouras
Keyword(s):  
Supramolecular Networks ◽  
Heterocyclic Cations ◽  
Nitrogen Heterocyclic

Lanthanide-doped Fluorescence Probes for NIR-Ⅱ Fluorescence Imaging

2020 ◽  
Vol 41 (12) ◽  
pp. 1460-1478
Author(s):  
Song-tao ZHANG ◽  
◽  
Ying-hui WANG ◽  
Hong-jie ZHANG ◽  
◽  
...  
Keyword(s):  
Fluorescence Imaging ◽  
Fluorescence Probes

Recent Progress in Chemosensors Using Aldehyde-bearing Fluorophores for the Detection of Specific Analytes and their Bioimaging

2019 ◽  
Vol 26 (21) ◽  
pp. 4003-4028 ◽  
Author(s):  
Fangjun Huo ◽  
Yaqiong Zhang ◽  
Caixia Yin
Keyword(s):  
Biomedical Research ◽  
Nucleophilic Addition ◽  
Recent Progress ◽  
Biological Imaging ◽  
Tissue Imaging ◽  
Fluorescence Probes ◽  
Biological Applications ◽  
Convenient Procedure ◽  
Nucleophilic Mechanism

In recent years, aldehyde-appended fluorescence probes have attracted increasing attention. Fluorescent biological imaging includes many modern applications for cell and tissue imaging in biomedical research. Meanwhile, the nucleophilic mechanism is a very simple and convenient procedure for the preparation of aldehyde-sensing probes. This tutorial review focuses on aldehyde-bearing chemosensors based on nucleophilic addition mechanism with biological applications.

Application of Nitrogen Heterocyclic Carbenes in Organocatalysis

2020 ◽  
Vol 09 ◽  
Author(s):  
Minita Ojha ◽  
R. K. Bansal
Keyword(s):  
Asymmetric Catalysis ◽  
Building Blocks ◽  
Structural Features ◽  
Heterocyclic Carbenes ◽  
Stetter Reaction ◽  
Metal Pollutants ◽  
Synthetic Strategy ◽  
Wide Range ◽  
Benzoin Condensation ◽  
Nitrogen Heterocyclic

Background: During the last two decades, horizon of research in the field of Nitrogen Heterocyclic Carbenes (NHC) has widened remarkably. NHCs have emerged as ubiquitous species having applications in a broad range of fields, including organocatalysis and organometallic chemistry. The NHC-induced non-asymmetric catalysis has turned out to be a really fruitful area of research in recent years. Methods: By manipulating structural features and selecting appropriate substituent groups, it has been possible to control the kinetic and thermodynamic stability of a wide range of NHCs, which can be tolerant to a variety of functional groups and can be used under mild conditions. NHCs are produced by different methods, such as deprotonation of Nalkylhetrocyclic salt, transmetallation, decarboxylation and electrochemical reduction. Results: The NHCs have been used successfully as catalysts for a wide range of reactions making a large number of building blocks and other useful compounds accessible. Some of these reactions are: benzoin condensation, Stetter reaction, Michael reaction, esterification, activation of esters, activation of isocyanides, polymerization, different cycloaddition reactions, isomerization, etc. The present review includes all these examples published during the last 10 years, i.e. from 2010 till date. Conclusion: The NHCs have emerged as versatile and powerful organocatalysts in synthetic organic chemistry. They provide the synthetic strategy which does not burden the environment with metal pollutants and thus fit in the Green Chemistry.

scholarly journals Molecular design strategy to alleviate environmental interference on two-photon fluorescence probes

2021 ◽  
Vol 2 (6) ◽  
pp. 100471
Author(s):  
Xingxing Zhang ◽  
Tianbing Ren ◽  
Qianling Zhang ◽  
Ting Zeng ◽  
Zhe Li ◽  
...  
Keyword(s):  
Molecular Design ◽  
Design Strategy ◽  
Fluorescence Probes ◽  
Two Photon ◽  
Two Photon Fluorescence ◽  
Photon Fluorescence ◽  
Environmental Interference

scholarly journals Quaternary Alloy Quantum Dots as Fluorescence Probes for Total Acidity Detection of Paper-Based Relics

Nanomaterials ◽  
2021 ◽  
Vol 11 (7) ◽  
pp. 1726
Author(s):  
Zhuorui Wang ◽  
Cong Cheng ◽  
Yongjuan Cheng ◽  
Lizhen Zheng ◽  
Daodao Hu
Keyword(s):  
Quantum Dots ◽  
Extraction Method ◽  
Quaternary Alloy ◽  
New Method ◽  
Fluorescence Probes ◽  
Total Acidity ◽  
Weak Acids ◽  
Paper Sample ◽  
Composition And Structure ◽  
Alloy Quantum Dots

Traditionally, the acidity of paper-based relics was determined by an extraction method and using a pH meter. This method could not obtain the total acidity of the paper-based relics because it only detected the concentration of free protons in the aqueous soaking solution. To overcome this defect, a new method for determining the total acidity of paper-based relics has been established by using quaternary alloy quantum dots. The quantum dots, CdZnSeS, modified by p-Aminothiophenol (pATP) were prepared, and their composition and structure were characterized. The fluorescence behavior of prepared quantum dots with acidity was investigated. The following results were obtained. The fluorescence of CdZnSeS-pATP quantum dots could decrease with increases in acidity because pATP dissociated from the surfaces of the quantum dots due to protons or undissociated weak acids. Based on this feature, a method for determining the acidity of paper-based relics was constructed, and this method was used to evaluate the acidity of actual paper-based relics. Obviously, for a given paper sample, since both free protons and bound protons can be determined by this method, the acidity measured by this method is more reasonable than that by pH meter.

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