Fluorescence probe studies during the curing of epoxy systems

2007 ◽  
pp. 83-87 ◽  
Author(s):  
B. Strehmel ◽  
M. Younes ◽  
V. Strehmel ◽  
S. Wartewig
Keyword(s):  
Fluorescence Probe ◽  
Epoxy Systems

Shape memory epoxy systems with a wide range of switching temperature

2017 ◽  
Vol 39 (1) ◽  
pp. 7-13
Author(s):  
Ye.P. Mamunya ◽  
◽  
O.K. Matkovska ◽  
O.V. Zinchenko ◽  
E.V. Lebedev ◽  
...  
Keyword(s):  
Shape Memory ◽  
Wide Range ◽  
Switching Temperature ◽  
Epoxy Systems

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

scholarly journals Studies on the Modification of Commercial Bisphenol-A-Based Epoxy Resin Using Different Multifunctional Epoxy Systems

2021 ◽  
Vol 2 (2) ◽  
pp. 419-430
Author(s):  
Ankur Bajpai ◽  
James R. Davidson ◽  
Colin Robert
Keyword(s):  
Mechanical Properties ◽  
Glass Transition ◽  
Transition Temperature ◽  
Glass Transition Temperature ◽  
Bisphenol A ◽  
Epoxy Resin ◽  
Tensile Fracture ◽  
Chemical Structures ◽  
Amino Phenol ◽  
Epoxy Systems

The tensile fracture mechanics and thermo-mechanical properties of mixtures composed of two kinds of epoxy resins of different chemical structures and functional groups were studied. The base resin was a bi-functional epoxy resin based on diglycidyl ether of bisphenol-A (DGEBA) and the other resins were (a) distilled triglycidylether of meta-amino phenol (b) 1, 6–naphthalene di epoxy and (c) fluorene di epoxy. This research shows that a small number of multifunctional epoxy systems, both di- and tri-functional, can significantly increase tensile strength (14%) over neat DGEBA while having no negative impact on other mechanical properties including glass transition temperature and elastic modulus. In fact, when compared to unmodified DGEBA, the tri-functional epoxy shows a slight increase (5%) in glass transition temperature at 10 wt.% concentration. The enhanced crosslinking of DGEBA (90 wt.%)/distilled triglycidylether of meta-amino phenol (10 wt.%) blends may be the possible reason for the improved glass transition. Finally, the influence of strain rate, temperature and moisture were investigated for both the neat DGEBA and the best performing modified system. The neat DGEBA was steadily outperformed by its modified counterpart in every condition.

scholarly journals Highly ductile glassy epoxy systems obtained by network topology modification using partially reacted substructures

Polymer ◽  
2021 ◽  
Vol 212 ◽  
pp. 123260 ◽  
Author(s):  
J. Gao ◽  
X. Chu ◽  
C.K. Henry ◽  
S.C. Santos ◽  
G.R. Palmese
Keyword(s):  
Network Topology ◽  
Epoxy Systems ◽  
Topology Modification

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
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