نتایج جستجو برای: solution phase synthesis

تعداد نتایج: 1406841  

Journal: :Chemistry Central Journal 2007
Zhengcui Wu Kuai Yu Yaobin Huang Cheng Pan Yi Xie

BACKGROUND A lot of effort has been focused on the integration of nanorods/nanowire as building blocks into three-dimensional (3D) complex superstructures. But, the development of simple and effective methods for creating novel assemblies of self-supported patterns of hierarchical architectures to designed materials using a suitable chemical method is important to technology and remains an attr...

Journal: :Chemical communications 2008
Shokaku Kim Ai Tsuruyama Akihiro Ohmori Kazuhiro Chiba

The cycloalkane-based thermomorphic (CBT) system is a convenient and practical method for oligosaccharide synthesis, and hydrophobically modified oligosaccharides have a remarkable affinity for CBT solutions composed of methylcyclohexane and propionitrile.

Journal: :ACS nano 2015
Nikolay Kornienko Desiré D Whitmore Yi Yu Stephen R Leone Peidong Yang

The tunable physical and electronic structure of III-V semiconductor alloys renders them uniquely useful for a variety of applications, including biological imaging, transistors, and solar energy conversion. However, their fabrication typically requires complex gas phase instrumentation or growth from high-temperature melts, which consequently limits their prospects for widespread implementatio...

Journal: :Journal of the American Chemical Society 2002
Todd Bosanac Craig S Wilcox

Precipitons are molecular phase tags for chemical separations. They can be switched from a high-solubility to a low-solubility state to facilitate product, reagent, or catalyst isolation. This paper presents the first photoactivated precipiton and demonstrates that this precipiton is an efficient amine scavenging agent in solution-phase syntheses of amides, ureas, and imines. This approach to a...

2017
Xiaoliang Wang Mashkoor Ahmad Hongyu Sun

Zinc oxide (ZnO) nanostructures have been studied extensively in the past 20 years due to their novel electronic, photonic, mechanical and electrochemical properties. Recently, more attention has been paid to assemble nanoscale building blocks into three-dimensional (3D) complex hierarchical structures, which not only inherit the excellent properties of the single building blocks but also provi...

Journal: :Beilstein Journal of Organic Chemistry 2008
Vladimir V Ryakhovsky Georgy A Khachiyan Nina F Kosovova Elena F Isamiddinova Andrey S Ivanov

Melanotan II is a synthetic cyclic heptapeptide used to prevent a sunlight-induced skin cancer by stimulating the skin tanning process. In this paper we report the first solution phase synthesis of the title compound. The hexapeptide sequence has been assembled by [(2+2)+1+1] scheme. After removing the orthogonal protection, a carbodiimide mediated lactamization, involving the epsilon-amino gro...

2012
P. Anantha Reddy Sean T. Jones Anita H. Lewin F. Ivy Carroll

A fragment condensation solution phase assembly of the naturally occurring CB(1) inverse agonist nonapeptides, Pro-Val-Asn-Phe-Lys-Phe/Leu-Leu-Ser-His-OH (hemopressins), and two other homologues: N-terminal 2-amino acid (dipeptide) extended undecapeptide, Val-Asp-Pro-Val-Asn-Phe-Lys-Leu-Leu-Ser-His-OH, and three-amino acid (tripeptide) extended dodecapeptide, Arg-Val-Asp-Pro-Val-Asn-Phe-Lys-Leu...

2016
Sunil Chavan Rahul Watpade Raghunath Toche

The KF, sucrose (table sugar) exploited as quenching system in solution phase parallel synthesis. Excess of electrophiles were covalently trapped with hydroxyl functionality of sucrose and due to polar nature of sucrose derivative was solubilize in water. Potassium fluoride used to convert various excess electrophilic reagents such as acid chlorides, sulfonyl chlorides, isocyanates to correspon...

2012
Sen Zhang Jonghun Lee Shouheng Sun

Magnetic nanoparticles (NPs) show interesting size/shape-dependent magnetism and magnetic transition from ferromagnetism to superparamagnetism. Such unique nanomagnetism has been studied extensively in the hope to optimize magnetic NPs for future magnetic data storage, energy storage and biomedicine applications. To achieve any of these application goals, the size, composition, shape and surfac...

2008
Jianfeng YE Limin QI

Limin Qi received his B.S. degree in Chemistry from Peking University in 1990 and his Ph.D degree in Physical Chemistry from Peking University under the supervision of Prof. Jiming Ma in 1998. He then went to the Max Planck Institute of Colloids and Interfaces, Germany to do his postdoctoral work with Prof. Markus Antonietti and Dr. Helmut Cölfen on biomimetic mineralization. In 2000, he joined...

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