Stir bar sorptive-dispersive microextraction mediated by magnetic nanoparticles–nylon 6 composite for the extraction of hydrophilic organic compounds in aqueous media

2016 ◽  
Vol 926 ◽  
pp. 63-71 ◽  
Author(s):  
Juan L. Benedé ◽  
Alberto Chisvert ◽  
Dimosthenis L. Giokas ◽  
Amparo Salvador
Keyword(s):  
Magnetic Nanoparticles ◽  
Organic Compounds ◽  
Aqueous Media ◽  
Nylon 6 ◽  
Dispersive Microextraction

scholarly journals Non-Enzymatic Desymmetrization Reactions in Aqueous Media

Symmetry ◽  
2021 ◽  
Vol 13 (4) ◽  
pp. 720
Author(s):  
Satomi Niwayama
Keyword(s):  
Natural Products ◽  
Total Synthesis ◽  
Functional Groups ◽  
Organic Compounds ◽  
Recent Progress ◽  
Aqueous Media ◽  
Building Blocks ◽  
Organic Reactions ◽  
Environmentally Benign ◽  
Enzymatic Desymmetrization

Symmetric organic compounds are generally obtained inexpensively, and therefore they can be attractive building blocks for the total synthesis of various pharmaceuticals and natural products. The drawback is that discriminating the identical functional groups in the symmetric compounds is difficult. Water is the most environmentally benign and inexpensive solvent. However, successful organic reactions in water are rather limited due to the hydrophobicity of organic compounds in general. Therefore, desymmetrization reactions in aqueous media are expected to offer versatile strategies for the synthesis of a variety of significant organic compounds. This review focuses on the recent progress of desymmetrization reactions of symmetric organic compounds in aqueous media without utilizing enzymes.

Cooperative Assembly of Magnetic Nanoparticles and Block Copolypeptides in Aqueous Media

Nano Letters ◽  
2003 ◽  
Vol 3 (11) ◽  
pp. 1489-1493 ◽  
Author(s):  
Larken E. Euliss ◽  
Stephanie G. Grancharov ◽  
Stephen O'Brien ◽  
Timothy J. Deming ◽  
Galen D. Stucky ◽  
...  
Keyword(s):  
Magnetic Nanoparticles ◽  
Aqueous Media ◽  
Block Copolypeptides ◽  
Cooperative Assembly

Microstructure and Properties of Ferrite/Organic Nanocomposite Prepared with Microemulsion Method

2012 ◽  
Vol 722 ◽  
pp. 31-38 ◽  
Author(s):  
Xu Zheng ◽  
Shu Hui Yu ◽  
Rong Sun ◽  
Wen Hu Yang ◽  
Ru Xu Du
Keyword(s):  
Magnetic Nanoparticles ◽  
Saturation Magnetization ◽  
Organic Compounds ◽  
Nanocomposite Film ◽  
Volume Ratio ◽  
Tween 80 ◽  
Reducing Agent ◽  
Good Stability ◽  
Molar Ratio ◽  
Microemulsion Method

A magnetite composite composed of the organic compounds and Fe3O4nanoparticles was prepared with microemulsion method. The Tween 80 and ammonia were used as surfactant and reducing agent, respectively, in synthesizing the Fe3O4nanoparticles. The experimental results showed that the composite possessed good stability while the volume ratio of Tween 80 to butanol was 0.4 and the molar ratio of NH4OH to Fe3+was 14.6. The saturation magnetization of the composite depends on the molar ratio of NH4OH to Fe3+. The mechanism of this stable Fe3O4paste was realized by the Fe3O4nanocomposite film using TEM. The microstructures of the film show that the magnetic nanoparticles in the composite are surrounded by Tween 80, which separates the magnetic nanoparticles and leads to good stability.

scholarly journals Photodesorption of specific organic compounds from titanium dioxide particles in aqueous media

2013 ◽  
Vol 52 (4-6) ◽  
pp. 867-872 ◽  
Author(s):  
Mohammad Shahid ◽  
Ibrahim El Saliby ◽  
Andrew McDonagh ◽  
Jong-Ho Kim ◽  
Ho Kyong Shon
Keyword(s):  
Titanium Dioxide ◽  
Organic Compounds ◽  
Aqueous Media
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