نتایج جستجو برای: synthesis chemical

تعداد نتایج: 762625  

2011
Anatoliy N. Sokolov Sule Atahan-Evrenk Rajib Mondal Hylke B. Akkerman Roel S. Sánchez-Carrera Sergio Granados-Focil Joshua Schrier Stefan C.B. Mannsfeld Arjan P. Zoombelt Zhenan Bao Alán Aspuru-Guzik

For organic semiconductors to find ubiquitous electronics applications, the development of new materials with high mobility and air stability is critical. Despite the versatility of carbon, exploratory chemical synthesis in the vast chemical space can be hindered by synthetic and characterization difficulties. Here we show that in silico screening of novel derivatives of the dinaphtho[2,3-b:2',...

2014
Nadezhda Shchepina Viktor Avrorin Gennadii Badun Galina Alexandrova Irina Agafonova Nina Popova

In this study the compatible chemical and biological investigations of several N-phenylquinolinium derivatives have been carried out in order to find the most perspective quinolinium structures for the nuclear-chemical synthesis of tritium labeled biomarkers.

2014
Kayoko Yanagisawa Langzhou Chen Mark J. F. Gales

In practical scenarios for speaker adaptation of speech synthesis systems, the quality of adaptation audio data may be poor. In these situations, it is necessary to make use of the available audio to capture the speaker attributes, whilst aiming to obtain a synthesis voice which does not have any of the lowquality attributes of the audio. One approach to achieving this is to define a sub-space ...

Journal: :Drug discovery today 2013
Alexander G Godfrey Thierry Masquelin Horst Hemmerle

This article describes our experiences in creating a fully integrated, globally accessible, automated chemical synthesis laboratory. The goal of the project was to establish a fully integrated automated synthesis solution that was initially focused on minimizing the burden of repetitive, routine, rules-based operations that characterize more established chemistry workflows. The architecture was...

Journal: :Angewandte Chemie 2005
K C Nicolaou Paul G Bulger David Sarlah

With the exception of palladium-catalyzed cross-couplings, no other group of reactions has had such a profound impact on the formation of carbon-carbon bonds and the art of total synthesis in the last quarter of a century than the metathesis reactions of olefins, enynes, and alkynes. Herein, we highlight a number of selected examples of total syntheses in which such processes played a crucial r...

Journal: :Nature communications 2016
Xiumei Geng Weiwei Sun Wei Wu Benjamin Chen Alaa Al-Hilo Mourad Benamara Hongli Zhu Fumiya Watanabe Jingbiao Cui Tar-Pin Chen

Metallic-phase MoS2 (M-MoS2) is metastable and does not exist in nature. Pure and stable M-MoS2 has not been previously prepared by chemical synthesis, to the best of our knowledge. Here we report a hydrothermal process for synthesizing stable two-dimensional M-MoS2 nanosheets in water. The metal-metal Raman stretching mode at 146 cm(-1) in the M-MoS2 structure, as predicted by theoretical calc...

2008
Alexei V. Demchenko

Since the first attempts at the turn of the twentieth century, enormous progress has been made in the area of the chemical synthesis of O-glycosides. However, it was only in the past two decades that the scientific world had witnessed a dramatic improvement the methods used for chemical glycosylation. The development of new classes of glycosyl donors has not only allowed accessing novel types o...

2015
Chaoliang Tan Hua Zhang

Non-layer structured nanomaterials with single- or few-layer thickness have two-dimensional sheet-like structures and possess intriguing properties. Recent years have seen major advances in development of a host of non-layer structured ultrathin two-dimensional nanomaterials such as noble metals, metal oxides and metal chalcogenides. The wet-chemical synthesis has emerged as the most promising ...

Journal: :Science 2009
Carole Lartigue Sanjay Vashee Mikkel A Algire Ray-Yuan Chuang Gwynedd A Benders Li Ma Vladimir N Noskov Evgeniya A Denisova Daniel G Gibson Nacyra Assad-Garcia Nina Alperovich David W Thomas Chuck Merryman Clyde A Hutchison Hamilton O Smith J Craig Venter John I Glass

We recently reported the chemical synthesis, assembly, and cloning of a bacterial genome in yeast. To produce a synthetic cell, the genome must be transferred from yeast to a receptive cytoplasm. Here we describe methods to accomplish this. We cloned a Mycoplasma mycoides genome as a yeast centromeric plasmid and then transplanted it into Mycoplasma capricolum to produce a viable M. mycoides ce...

Journal: :Nano letters 2008
Ferdinand Kuemmeth Kirill I Bolotin Su-Fei Shi Daniel C Ralph

We form single-electron transistors from individual chemically synthesized gold nanoparticles, 5-15 nm in diameter, with monolayers of organic molecules serving as tunnel barriers. These devices allow us to measure the discrete electronic energy levels of individual gold nanoparticles that are, by virtue of chemical synthesis, well-defined in their composition, size and shape. We show that the ...

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