molecules

Our approach is therefore broadly applicable and, unlike traditional single-molecule microscopy, does not rely on the addition of labels to make molecules visible.' The researchers say the technique -- which they call interferometric scattering mass spectrometry (iSCAMS) -- could have applications ranging ...

Clever catalyst repurposes classic nucleophilic substitution to make chiral quaternary carbon centres. A substitution reaction known for destroying stereochemistry has been converted into a chirality-creating reaction to tackle one of the toughest organic chemistry challenges: making quaternary carbon ...

The mass of entire molecules, but also of defined fragments is determined. If the library of the 130 possible initial components is known, conclusions can be drawn with respect to the molecule and the password for decryption can be read out. "The idea to send information via secret channels is not new.

Linear polyenes are hydrocarbon chains with unusual optical and electrical properties. They have become a paradigm for studying photoisomerization—when molecular structures rearrange from absorbing light—because of their straightforward molecular structure, potential for electrical conductivity, and ...

Certain organic molecules become activated and react when they absorb sunlight. They often go through a reactive intermediate called a "radical," which initiates a chain reaction leading to the formation of more complex chemicals. This "radical initiator" pathway is important for understanding which ...

With summer approaching, "sea and sun" might conjure up images of a beach trip. But for scientists, the interactions of the two have big implications for the climate and for the formation of tiny droplets, or aerosols, that lead to clouds. In ACS Central Science, researchers demonstrate that sunlight can cause ...

UNR doctor discovers molecule that could be the key to curing type 2 diabetes. by Kristen ... The funding came after Dr. Ro discovered a molecule that plays a crucial role in the disease. He said ... Dr. Ro and his team are using the funding to search for an FDA- approved chemical compound that will turn the molecule "on".

The combination of the two atoms remarkably resulted in an alloy-like molecule. Most especially of all, however, it becomes a material that can advance the use of quantum computing. As a rule, molecules are only made when numerous atoms are bonded together during a chemical reaction. In the past ...

Muscat: The Ministry of Commerce and Industry has registered a patent for a device producing energy from water molecules. The ministry is trying to create a competitive business environment for the private sector to contribute effectively to the development of the national economy. In light of this vision, the ...

A molecule is the smallest particle in an element or compound. Usually, molecules are made up of many atoms that are held together by chemical bonds. In the latest work, researchers have used laser and optical tweezers to capture two atoms and merged them to form a single molecule. The new dipolar ...

You may make fun, but Ivanka Trump's very dumb science photo op is actually what most people think when they hear “chemistry.” And it's not a wrong idea. You mix some chemicals with some other chemicals, and you get molecules—multiple atoms bonded together. But a lab at Harvard is trying to add ...

His close call inspired his research team to design a new molecule, called a polymer, that targets five deadly types of drug-resistant microbes and kills them like ninja assassins. Their research, a collaboration with Singapore's Institute of Bioengineering and Nanotechnology, was reported in the journal ...

A longstanding mystery in biology is how the millions of molecules bumping around in a cell "find" one another and organize into functional structures. So it was a big surprise in 2008 when participants in the Marine Biological Laboratory (MBL) Physiology course realized that simple phase separations ...

Nitric oxide is a small signalling molecule employed throughout the body for a range of different bodily functions. Thanks to its small size it is diffusible, meaning it can work as a messenger between cells and tissues. It has a key role in maintaining blood pressure and blood flow and is known to be utilized ...

Until now making molecules meant putting atoms or molecules in close proximity and hoping that they would react with each other by colliding. The final outcome of such random pairings would then be analysed to see if the desired molecule is created. This laser tool now can make molecules perfectly and ...

Scientists have hand-built a designer molecule using optical tweezers, in the process pioneering an entirely new form of chemical reaction. A team at Harvard University in the US trapped two individual atoms in separate laser beams, then brought them together and triggered a reaction between them with a ...

... inorganic devices, including much lower potential production costs and broader substrate compatibility. These devices incorporate organic molecules and metal components, and one of the major challenges in this field is understanding the charge transport behaviors across the metal-molecule interface.

Pyrene molecules, which are four-ring, 16-carbon polycyclic hydrocarbons, are likely formed around giant stars. ... At the ALS, they then injected a mix of 4-phenanthrenyl and acetylene – a simple two-carbon molecule – into a microreactor that heated the sample to a high temperature like they might ...

When mice with UTIs were given the mannosides, the E. coli in their bladders grabbed hold of those molecules and were swept away. Recently, Matthew Conover, PhD, a postdoctoral researcher in Hultgren's lab, and colleagues showed that E. coli also can latch onto galactose, another sugar molecule ...

“They are brand new molecules,” says Brady. “They have never been seen before.” Nonetheless, malacidins are very common in nature—the researchers found them in one out of every ten soil samples they tested. Brady's team is now studying variants of the newly discovered malacidin molecule to see if ...

The study, published in the journal Nature and led by scientists at the US Department of Energy's SLAC National Accelerator Laboratory and Stanford University, describes how minuscule pieces of diamond and other super-hard materials can squeeze and twist molecules, causing chemical bonds to snap ...

Myriads of molecules react in highly specific ways to light of certain wavelengths in the mid-infrared region. By absorbing particular wavelengths, each type of molecule in a sample imprints a specific signature on the transmitted beam, which serves as a molecular fingerprint. With a source of broadband ...

They report that they've directly detected the molecule at around 0.4-0.8 parts per million as ice in its cloud tops. They measured more hydrogen sulfide than ammonia, and also the exact concentration of hydrogen sulfide required to produce a rotten-egg fart smell. They published their paper today in Nature ...

IBM researchers at a lab in San Jose say they have created a plastic molecule that could be effective in combating antibiotic resistant superbugs. “I think we ... “We make a synthetic molecule that is specifically designed to attract the bacteria's surface like a magnet, and once it latches on it effectively kills it.” ...

The twisted molecules are more than a mere academic oddity. Like other helical structures, they are chiral and they possess compelling optical properties that might be useful for materials applications. Kilway's team calculated that the next bigger twistacene – a molecule with seven fused benzene rings ...

Solid surfaces are common sites of molecular reaction: gas molecules congregate there and react, for example on many solid catalysts. But a new study claims that such reactions might be influenced more by the vibrational state of the incoming molecules than was thought. When a molecule sticks to a ...

Researchers have found a way to convert single bonds between carbon and hydrogen atoms in a chemical molecule into carbon-carbon bonds. This so-called C-H activation is considered a promising strategy for producing complex molecules from simple starting materials in just a few steps. The main ...

Researchers have been working on creating synthetic molecules for some time now, but it's been difficult. The synthetic molecule needs to be able to biodegrade—it can't remain inside the body forever—and it also needs to effectively fight bacteria in a way that doesn't negatively affect other organ systems ...