Construction of waste‐collagen modified superfine fiber substrates based on “click” chemistry: Moisture absorption and permeability

2021 ◽  
pp. 51440
Author(s):  
Na Xu ◽  
Yanmei Xing ◽  
Xuechuan Wang ◽  
Longfang Ren ◽  
Taotao Qiang
Keyword(s):  
Click Chemistry ◽  
Moisture Absorption ◽  
Superfine Fiber

Click Chemistry Expedited Radiosynthesis: Sulfur [18F]fluoride Exchange of Aryl Fluorosulfates

2019 ◽  
Author(s):  
Qinheng Zheng ◽  
Hongtao Xu ◽  
Hua Wang ◽  
Wen-Ge Han Du ◽  
Nan Wang ◽  
...  
Keyword(s):  
Click Chemistry ◽  
High Performance ◽  
Isotopic Exchange ◽  
Tumor Imaging ◽  
Radiochemical Yield ◽  
Exchange Method ◽  
Molar Activity ◽  
Positron Emission ◽  
Sulfur Fluoride

The lack of simple, efficient [<sup>18</sup>F]fluorination processes and new target-specific organofluorine probes remains the major challenge of fluorine-18-based positron emission tomography (PET). We report here a fast isotopic exchange method for the radiosynthesis of aryl [<sup>18</sup>F]fluorosulfate based PET agents enabled by the emerging sulfur fluoride exchange (SuFEx) click chemistry. The method has been applied to the fully-automated <sup>18</sup>F-radiolabeling of twenty-five structurally diverse aryl fluorosulfates with excellent radiochemical yield (83–100%) and high molar activity (up to 281 GBq µmol<sup>–1</sup>) at room temperature in 30 seconds. The purification of radiotracers requires no time-consuming high-performance liquid chromatography (HPLC), but rather a simple cartridge filtration. The utility of aryl [<sup>18</sup>F]fluorosulfate is demonstrated by the <i>in vivo</i> tumor imaging by targeting poly(ADP-ribose) polymerase 1 (PARP1).

Inter Layer Dielectric Defect Induced High Contact Resistance

2010 ◽  
Author(s):  
Re-Long Chiu ◽  
Jason Higgins ◽  
Toby Kinder ◽  
Juha Tyni ◽  
Sharon Ying ◽  
...  
Keyword(s):  
Contact Resistance ◽  
Failure Analysis ◽  
Failure Mode ◽  
Phosphorus Content ◽  
Moisture Absorption ◽  
Thermal Processes ◽  
Analysis Methods ◽  
Low Phosphorus

Abstract High contact resistance can be caused by moisture absorption in low phosphorus content BPTEOS. Moisture diffused through the TiN glue layer is absorbed by the BPTEOS during subsequent thermal processes resulting in increased contact resistance. This failure mode was studied by combining different failure analysis methods and was confirmed by duplication on experimental wafers.

Use of Click-Chemistry in the Development of Peptidomimetic Enzyme Inhibitors

2014 ◽  
Vol 21 (13) ◽  
pp. 1467-1477 ◽  
Author(s):  
P. Fabbrizzi ◽  
G. Menchi ◽  
A. Guarna ◽  
A. Trabocchi
Keyword(s):  
Click Chemistry ◽  
Enzyme Inhibitors

Synthesis of Porphyrin, Chlorin and Phthalocyanine Derivatives by Azide-Alkyne Click Chemistry

2015 ◽  
Vol 22 (28) ◽  
pp. 3217-3254 ◽  
Author(s):  
Samir Acherar ◽  
Ludovic Colombeau ◽  
Celine Frochot ◽  
Regis Vanderesse
Keyword(s):  
Click Chemistry
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